• Microstructure, strain, texture mapping in metal samples with high spatial resolution
  
  
• Neutron imaging of dynamic and transient processes, in-situ diagnostics of crystal growth

• Novel imaging techniques
  

• High resolution neutron radiography and tomography
  

• Neutron imaging detectors

• Neutron collimation and scatter rejection
  
  
• Photon, neutron, electron counting detectors with high timing and spatial resolution
  
  
• NASA astrophysical instrumentation
  
  
• Novel electron multipliers
  
  
• Microchannel Plate readout technology
  
  
• Photocathode development
  
  
• Synchrotron instrumentation and experiments
  
  
• Biomedical imaging and instrumentation

Microstructure, strain, texture mapping with high spatial resolution

• A.S. Tremsin, J. Rakovan, T. Shinohara, W. Kockelmann, A.S. Losko, S.C. Vogel, “Non-destructive study of bulk crystallinity and elemental composition of natural gold single crystal samples by energy-resolved neutron imaging”, Scintific Reports 7 (2017) 40759; doi: 10.1038/srep40759.
  http://rdcu.be/oEQw Free access

• H.J. Kirkwood, S.Y. Zhang, A.S. Tremsin, T. Sui, A.M. Korsunsky, B. Abbey, "High resolution imaging and analysis of residual elastic strain in an additively manufactured turbine blade",  International Journal of Nanotechnology 14 (2017) pp.166-178.
  DOI: 10.1504/IJNT.2017.082460.

• M. G. Makowska, M. Strobl, E. M. Luridsen, S. Kabra, W. Kockelmann, A. Tremsin, H. L. Frandsen, L. T. Kuhn, “In-situ time-of-flight neutron imaging of NiO-YSZ reduction under influence of stress”, J. Appl Cryst. 49 (2016) pp.1674-1681;
  https://doi.org/10.1107/S1600576716012668

• J.C. Khong, D. Daisenberger, G. Burca, W. Kockelmann, A.S. Tremsin, J. Mi, “Design and characterisation of metallic glassy alloys of high neutron shielding capability”, Sci. Rep. 6 (2016) 36998; doi: 10.1038/srep36998.
  https://www.nature.com/articles/srep36998 Free access

• A. S. Tremsin, T. Y. Yau, W. Kockelmann, "Non-destructive examination of loads in regular and self-locking Spiralock threads through energy-resolved neutron imaging", Strain 52 (2016) 548-558.
  doi: 10.1111/str.12201 Free access
  
  
• A. S. Tremsin, S. Ganguly, S.Meco, G.R. Pardal, T. Shinohara, W.B. Feller, "Non-destructive studies of dissimilar metal welds by energy resolved neutron imaging", J. Appl. Crystallography 49 (2016) 1130-1140;
  doi:10.1107/S1600576716006725 Free access
  
  
• A.S. Tremsin, W. Kockelmann, Shu-Yan Zhang, A.M. Korsunsky, T. Shinohara, E.H. Lehmann, "Investigation of microstructure within metal welds by energy resolved neutron imaging", Journal of Physics: Conference Series 746 (2016) 012040.
  doi:10.1088/1742-6596/746/1/012040 Free access
  
  
• A.S. Tremsin, Y. Gao, L.C. Dial, F. Grazzi, T. Shinohara, "Investigation of microstructure in additive manufactured Inconel 625 by spatially-resolved neutron transmission spectroscopy", Science and Technology of Advanced Materials 17 (2016) 324-336;
  http://dx.doi.org/10.1080/14686996.2016.1190261 Free access

• S. Kabra, J. Kelleher, W. Kockelmann, A.S. Tremsin, "Energy-dispersive neutron imaging and diffraction of magnetically driven twins in a Ni2MnGa single crystal magnetic shape memory alloy", Journal of Physics: Conference Series 746 (2016) 012056.
  http://iopscience.iop.org/article/10.1088/1742-6596/746/1/012056/pdf Free access
  
  
• C.M. Wensrich, J.N. Hendriks, A. Gregg, M.H. Meylan, V. Luzin, A.S. Tremsin, "Bragg-edge neutron transmission strain tomography for in situ loadings", Nucl. Instr. Meth. Phys. Res. B 383 (2016) 52-58.
  
  
• T. Minniti, W. Kockelmann, G. Burca, J.F. Kelleher, S. Kabra, S.Y. Zhang, D.E. Pooley, E.M. Schooneveld, Q. Mutamba, J. Sykora, N.J. Rhodes, F.M. Pouzols, J.B. Nightingale, F. Aliotta, L.M. Bonaccorsi, R. Ponterio, G. Salvato, S. Trusso, C. Vasi, A.S. Tremsin and G. Gorini, " Materials analysis opportunities on the new neutron imaging facility IMAT@ISIS", Journal of Instrumentation JINST 11 (2016) C03014. doi:10.1088/1748-0221/11/03/C03014.
  
  
• R.R. Dehoff, M.M. Kirka, W.J. Sames, H. Bilheux, A.S. Tremsin, L.E. Lowe, S.S. Babu, "Site specific control of crystallographic grain orientation through electron beam additive manufacturing", Materials Science and Technology 31 (2015) 931-938.
  http://dx.doi.org/10.1179/1743284714Y.0000000734 Free access
  
  
• H.J. Kirkwood, S.Y. Zhang, A.S. Tremsin, W. Li, A. Korsunsky, N. Baimpas, B. Abbey, "Neutron Strain Tomography using the Radon Transform",  Materials Today: Proceedings 2S (2015 ) S414 - S423.
  
  
• M.G. Makowska, M. Strobl, E.M. Lauridsen, H.L. Frandsen, A.S. Tremsin, T. Shinohara, L.T. Kuhn, "Phase transition mapping in SOFC anode supports during reduction under applied stress", SOFC XIV: ECS Transactions Proceedings, ECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV, ECS Transactions 07/2015; 68(1):1103-1114. DOI:10.1149/06801.1103ecst.
  
  
• H. Sato, T. Sato, Y. Shiota, T. Kamiyama, A. S. Tremsin, M. Ohnuma, Y. Kiyanagi, "Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging", Materials Transactions 56 (2015) pp. 1147-1152.
  
  
• M. Makowska, M. Strobl, E. M. Lauridsen, H. L. Frandsen, A. S. Tremsin, N. Kardjilov, I. Manke, J. F. Kelleher, L. Theil Kuhn, "Effect of stress on NiO reduction in solid oxide fuel cells -- a new application of energy-resolved neutron imaging", J. Appl. Crystallography 48 (2015) 401-408 doi:10.1107/S1600576715002794
  
  
• R. Woracek, J. Bunn, D. Penumadu, A.Tremsin, N. Kardjilov, I. Manke, C. Hubbard, B. Cady, B. Claussen, T. Sisneros, "Measurement of hkl Strains under Complex Loading Paths and Methodology for Combined Neutron Diffraction and Imaging", Mater. Res. Soc. Symp. Proc. Vol. 1528 (2013) Materials Research Society, DOI: 10.1557/opl.2013.571.
  
  
• W. Li, S.Y. Zhang, S. Kabra, A. Tremsin, B. Abbey, H. Kirkwood, D. Terret, S. Ndoye, E. McDevitt, "Characterisation of Residual Stress due to Fillet Rolling on Bolts Made of a Nickel Base Superalloy",  Advanced Materials Research Vol. 996 (2014) pp 670-675, doi:10.4028/www.scientific.net/AMR.996.670.
  
  
• E. Barzagli, F. Grazzi, F. Salvemini, A. Scherillo, H. Sato, T. Shinohara , T. Kamiyama, Y. Kiyanagi, A. Tremsin, and Marco Zoppi, "Wavelength Resolved Neutron Transmission Analysis to identify single crystal particles in historical metallurgy", Eur. Phys. J. Plus 129 (2014) 158. DOI: 10.1140/epjp/i2014-14158-3
  
  
• A.S. Tremsin, J.B. McPhate, J.V. Vallerga, O.H.W. Siegmund, W.B. Feller, W. Kockelmann, A. Paradowska, S.Y. Zhang, J. Kelleher, A. Steuwer, J. Santisteban, "High-resolution strain mapping through time-of-flight neutron transmission diffraction", Materials Science Forum Vol. 772 (2014) pp 9-13, doi:10.4028/www.scientific.net/MSF.772.9
  
  
• M. Strobl, R. Woracek, N. Kardjilov, A. Hilger, R. Wimpory, A. Tremsin, T. Wilpert, C. Schulz, I. Manke, D. Penumadu, "Time-of-flight neutron imaging for spatially resolved strain investigations based on Bragg edge transmission at a reactor source", Nucl. Instr. Meth. A 680, pp. 27-34 (2012) doi: 10.1016/j.nima.2012.04.026
  
  
• A. S. Tremsin, J. B. McPhate, A. Steuwer, W. Kockelmann, A. M Paradowska, J. F. Kelleher, J. V. Vallerga, O. H. W. Siegmund and W. B. Feller, "High-resolution strain mapping through time-of-flight neutron transmission diffraction with a microchannel plate neutron counting detector", Strain: An International Journal for Experimental Mechanics 48, pp.296-305 (2012) doi: 10.1111/j.1475-1305.2011.00823.x
  
  
• J. R. Santisteban, M. A. Vicente-Alvarez, P. Vizcaino, A. D. Banchik, S. C. Vogel, A. S. Tremsin. J. V. Vallerga, J. B. McPhate, E. Lehmann and W. Kockelmann, "Crystallographic texture contrast in neutron radiography of zirconium based components", special session on "Characterization of Nuclear Reactor Materials and Components with Neutron and Synchrotron Radiation", Journal of Nuclear Materials 425, pp. 218-227 (2012).
  
  
• A.M. Paradowska, A. Tremsin, J.F. Kelleher, S.Y. Zhang, S. Paddea, G. Burca, J.A. James, A. Rehan, N. H. Faisal,  F. Grazzi, G. Festa, C. Andreani, F. Civita, P.J.Bouchard, W Kockelman, M.E. Fitzpatrick, "Modern and Historical Engineering Concerns Investigated by Neutron Diffraction", Iternational Conference on Advanced Technology in Experimental Mechanics 2011 (ATEM'11). September 19-21, 2011. Kobe (Japan), Proceedings No.11-203 Paper OS04F125, Journal of Solid Mechanics and Materials Engineering 01 ( 2012).

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Neutron imaging of dynamic and transient processes, in-situ diagnostics of crystal growth

• A.S. Tremsin, D. Perrodin, A.S. Losko, S.C. Vogel, M.A.M. Bourke, G.A. Bizarri, E.D. Bourret, “Real-time crystal growth visualization and quantification by energy-resolved neutron imaging”, Sci. Reports 7 (2017) 46275; doi:10.1038/srep46275.
  http://rdcu.be/rtT4 Free access
  
  
• A.S. Tremsin, M.G. Makowska, D. Perrodin, T. Shalapska, I.V. Khodyuk, P. Trtik, P. Boillat, S.C. Vogel, A.S. Losko, M. Strobl, L. Theil Kuhn, G.A. Bizarri, E.D. Bourret-Courchesne, "In-situ diagnostics of crystal growth process through neutron imaging: application to scintillators", J. Appl. Crystallography 49 (2016) 743-755.
  https://doi.org/10.1107/S1600576716004350 Free access
  
  
• A.S. Tremsin, V. Dangendorf, K. Tittelmeier, B. Schillinger, M. Schulz, M. Lerche, W. B. Feller, "Time-resolved neutron imaging at ANTARES cold neutron beamline",  Journal of Instrumentation JINST 10 (2015) P07008. doi:10.1088/1748-0221/10/07/P07008.
  
  
• M. Lerche, A.S. Tremsin, B. Schillinger, "Bright Flash Neutron Radiography at the McClellan Nuclear Research Reactor", Physics Procedia 69 (2015) 299 - 303.
  
  
• A.S. Tremsin, N. Kardjilov, M. Strobl, I. Manke, M. Dawson, J.B. McPhate, J.V. Vallerga, O.H.W. Siegmund, W.B. Feller, "Imaging of dynamic magnetic fields with spin-polarized neutron beams", New Journal of Physics 17 (2015) 043047
  doi:10.1088/1367-2630/17/4/043047 Free access See also videoabstract here
  
  
• C.-L. Cheng, E. Perfect, B. Donnelly, H.Z. Bilheux, A.S. Tremsin, L.D. McKay, V.H. Distefano, J.C. Cai, L.J. Santodonato, "Rapid imbibition of water in fractures within unsaturated sedimentary rock", Advances in Water Resources 77 (2015) 82-89.
  
  
• A.S. Tremsin, M. Lerche, B. Schillinger, W.B. Feller, "Bright flash neutron radiography capability of the research reactor at the McClellan Nuclear Research Center", Nucl, Instr. Meth. A 748 (2014) pp. 46-53.
  
  
• A. S. Tremsin, M. J. Mühlbauer, B. Schillinger, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, "High resolution stroboscopic neutron radiography at the FRM-II ANTARES facility", IEEE Transactions On Nuclear Science 57, pp. 2955-2962 (2010).
  

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Novel imaging techniques

• J. Long, F. Furch, J. Durá, A. Tremsin, J. Vallerga, C. Schulz, A. Rouzée, M. Vrakking, “Ion-ion coincidence imaging at high event rate using an in-vacuum pixel detector", J. Chem Phys. 147 (2017) 013919.
  http://aip.scitation.org/doi/pdf/10.1063/1.4981126 Free access
  

• A.S. Tremsin, A.S. Losko, S.C. Vogel, D.D. Byler, K.J. McClellan, M.A.M. Bourke, J.V. Vallerga, “Non-contact measurement of partial gas pressure and distribution of elemental composition using energy-resolved neutron imaging”, AIP Advances 7, 015315 (2017);
  doi: 10.1063/1.4975632 Free access

• M. Sales, J. Plomp, K. Habicht, A. Tremsin, W. Bouwman, M Strobl, "Wavelength-Independent Constant Period Spin-Echo Modulated Small Angle Neutron Scattering", Review of Scientific Instruments 87 (2016) 063907; doi: 10.1063/1.4954727
  
  
• M. Strobl, M. Sales, J. Plomp, W.G. Bouwman, A.S. Tremsin, A. Kaestner, C. Pappas, K. Habicht, "Quantitative Neutron Dark-field Imaging through Spin-Echo Interferometry", Scientific Reports 5 (2015) 16576;
  DOI: 10.1038/srep16576 Free access
  
  
• A. S. Tremsin, W. Kockelmann, D. E. Pooley, W. B. Feller, "Spatially resolved remote measurement of temperature by neutron resonance absorption", Nucl, Instr. Meth. A 803 (2015) 15-23. doi:10.1016/j.nima.2015.09.008
  
  
• A.S. Tremsin, T. Shinohara, T. Kai, M. Ooi, T. Kamiyama, Y. Kiyanagi, Y. Shiota, J.B. McPhate, J.V. Vallerga, O.H.W. Siegmund, W.B. Feller, "Neutron resonance transmission spectroscopy with high spatial and energy resolution at J-PARC pulsed neutron source", Nucl, Instr. Meth. A 746 (2014) pp. 47-58.
  
  
• M. Strobl, A.S. Tremsin, A. Hilger, F. Wieder, N. Kardjilov, I. Manke, W. G. Bouwman, J. Plomp, "TOF-SEMSANS - Time-of-flight spin-echo modulated small-angle neutron scattering", J. Appl. Phys. 112 (2012) 014503 doi: 10.1063/1.4730775.
  
  
• A. S. Tremsin, E. H. Lehmann, N. Kardjilov, M. Strobl, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W.B. Feller, "Refraction contrast imaging and edge effects in neutron radiography", Journal of Instrumentation, 2012 JINST 7 C02047; doi:10.1088/1748-0221/7/02/C02047 (2012).
  
  
• V. V. Protopopov, J. Sobota, A. S. Tremsin, O. H. W. Siegmund, "X-ray Dark Field Refraction-Contrast Imaging - a New Tool for Medical Imaging", Proc. IEEE Medical Imaging Conference, November 2002, vol. 3 pp.1819-1823 (2002).
  
  
• V.V. Protopopov, J. Sobota, A.S. Tremsin, O.H.W. Siegmund, Y.Ya. Platonov, "X-ray imaging of microobjects using dark field refraction-contrast method with resonantly absorbing multilayer mirrors", Proc. SPIE, vol. 4682, "Physics of Medical Imaging", pp.277-285, 2002.
  

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High resolution neutron radiography and tomography

• A.S. Tremsin, M. Morgano, T. Panzner, E. Lehmann, U. Filgers, J.V. Vallerga, J.B. McPhate, O.H.W. Siegmund, B. Feller, "High resolution neutron imaging capabilities with MCP/Timepix detector at BOA beamline at PSI",  Nucl. Instr. Meth. A 784. pp. 486-493 (2015) http://dx.doi.org/10.1016/j.nima.2014.09.026.
  
  
• M. Makowska, L. Theil Kuhn, L. Cleemann, E. Lauridsen, H. Bilheux, L. Santodonato, J. Molaison, A. Tremsin, M. Grosse, M. Morgano, S. Kabra, E. D. Bourret-Chourchesne, G. Bizarri, M. Strobl, "Flexible sample environment for high resolution neutron imaging at high temperatures in controlled atmosphere", Review of Scientific Instruments 86 (2015) 125109.
  
  
• L. Santodonato, H. Bilheux, B. Bailey, J. Bilheux, P. Nguyen, A. Tremsin, D. Selby, L. Walker, "The CG-1D Neutron Imaging Beamline at the Oak Ridge National Laboratory High Flux Isotope Reactor", WCNR-10, Grindelwald, Switzerland, October 2014, Physics Procedia 69 (2015) 104-108.
  
  
• W. Kockelmann, G. Burca, J.F. Kelleher, S. Kabra, S.Y. Zhang, N.J. Rhodes, E.M. Schooneveld, J. Sykora, D.E. Pooley, J.B. Nightingale, F. Aliotta, R. Ponterio, G. Salvato, D. Tresoldi, C. Vasi, J.B. McPhate, A.S. Tremsin, "Status of the Neutron Imaging and Diffraction instrument IMAT at ISIS", WCNR-10, Grindelwald, Switzerland, October 2014, Physics Procedia 69 ( 2015) 71-78.
  
  
• A.S. Tremsin, S.C. Vogel, M. Mocko, M.A.M. Bourke, V. Yuan, R.O. Nelson, D.W. Brown, W.B. Feller, "Energy resolved neutron radiography at LANSCE pulsed neutron facility", Neutron News, Volume 24, Issue 4, pp.28-32 (2013 ).
  DOI: 10.1080/10448632.2013.831612 Free access
  
  
• A. S. Tremsin, S. C. Vogel, M. Mocko, M. A. M. Bourke, V. Yuan, R. O. Nelson, D. W. Brown, W. B. Feller, "Non-destructive studies of fuel rodlets by neutron resonance absorption radiography and thermal neutron radiography", Journal of Nuclear Materials 440, pp. 633-646 (2013).
  
  
• M. Ooi, M. Teshigawara, T. Kai, M. Hadara, F. Maekawa, M. Futakawa, E. Hashimoto, M. Segawa, M. Kureta, A. Tremsin, T. Kamiyama, Y. Kiyanagi, "Resonance neutron imaging of the Au-In-Cd alloy at JSNS", ITMNR-7, Ontario, Canada, June 2012, Physics Procedia 43, pp. 337-342 (2013).
  
  
• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. Kockelmann, E. M. Schooneveld, N. J. Rhodes, W. B. Feller, "High resolution neutron resonance absorption imaging at a pulsed neutron beamline", IEEE Transactions On Nuclear Science 59, pp. 3272-3277 (2012).

• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H.W. Siegmund, W. B. Feller, E. Lehmann, A. Kaestner, P. Boillat, T. Panzner, U. Filges, "Neutron radiography with sub-15 mm resolution through event centroiding", Nucl. Instr. Meth. A 688, pp. 32-40 (2012).

• A.S. Tremsin, "High resolution neutron imaging and transmission diffraction with noiseless readout", Australian Nuclear Science and Technology Organisation: Current State and Future of Neutron Stress Diffractometers; 10-12 January, 2012.

• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, E. Lehmann, M. Dawson, "High resolution neutron micro-tomography with noiseless neutron counting detector", Nucl. Instr. and Meth. A 652, pp.400-403 (2011).

• A. S. Tremsin, J. B. McPhate, W. Kockelmann, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, "High resolution Bragg edge transmission spectroscopy at pulsed neutron sources: proof of principle experiments with neutron counting MCP detector", Nucl. Instr. Meth. A 633, pp. S235-S238 (2011).

• W.B. Feller, A.S. Tremsin, "Neutron Tomography, Radiography, and Detection Using MCP Solid-state Imagers", Transactions of the American Nuclear Society Volume: 103, pp.1170-1, (2010).
  
  
• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, H. Z. Bilheux, J. J. Molaison, C. A. Tulk, L. Crow, R. G. Cooper, D. Penumadu, "Transmission Bragg edge spectroscopy measurements at ORNL Spallation Neutron Source", Journal of Physics: Conference Series 251 (2010) 012069 doi:10.1088/1742-6596/251/1/012069
  
  
• A.S. Tremsin, W.B. Feller, "Neutron imaging: neutron radiography and neutron computed tomography", Transactions of the American Nuclear Society Volume: 100, p. 237 (2009).
  
  
• A. S. Tremsin, J. B. McPhate, W. A. Kockelmann, J. V. Vallerga, O. H.W. Siegmund, W. B. Feller, "Energy-Resolving Neutron Transmission Radiography at the ISIS Pulsed Spallation Source with a High-Resolution Neutron Counting Detector", IEEE Trans. Nucl. Sci. 56 N5, pp. 2931-2937 (2009).
  
  
• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, J. S. Hull, W. B. Feller, E. Lehmann, "High resolution neutron radiography with microchannel plates: proof-of-principle experiments at PSI", The 6^th International Topical Meeting on Neutron Radiography, 14-18 September, 2008, Kobe, Japan, Nucl. Instr. Meth. A 605, pp.103-106 (2009).
  
  
• A. S. Tremsin, J. V. Vallerga, J. B. McPhate, O. H. W. Siegmund, W. B. Feller, L. Crow, R. G. Cooper, "On the possibility to image thermal and cold neutron with sub-15 mm spatial resolution", Nucl. Instr. Meth. A 592, pp.374-384 (2008).

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Neutron imaging detectors

See also these recent publications related to detection of both photons and neutorns: Paper1, Paper2, Paper3

• A. S. Tremsin , "High resolution neutron counting detectors with microchannel plates and their applications in neutron radiography, diffraction and resonance absorption imaging", Neutron News 23, pp. 35-38 (2012).
  http://dx.doi.org/10.1080/10448632.2012.725341 Free access

• A. S. Tremsin, J. B. McPhate, W. Kockelmann, A. Steuwer, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, "High resolution neutron counting sensors in strain mapping through a transmission Bragg edge diffraction", IEEE Sensors Journal 11 (12) 3433-3436 (2011) [doi:10.1109/JSEN.2011.2160339].

• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, E. Lehmann, "Improved efficiency of high resolution thermal and cold neutron imaging",  Nucl. Instr. Meth. A 628, pp.415-418 (2011).
  
  
• E. H. Lehmann, A. Tremsin, C. Grünzweig, A. Kaestner, "Neutron Imaging - detector options in progress",  Journal of Instrumentation, JINST 6 C01050; doi: 10.1088/1748-0221/6/01/C01050 (2011).
  
  
• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, J. S. Hull, W. B. Feller, E. Lehmann, "Detection efficiency, spatial and timing resolution of thermal and cold neutron counting MCP detectors", Nucl. Instr. Meth. A 604, pp.140-143 (2009).
  
  
• A. S. Tremsin, W. B. Feller, O. H. W. Siegmund, "A new concept of thermal neutron counting with sub-microsecond timing resolution", IEEE Trans. Nucl. Sci. 55, pp. 1664-1669 (2008).
  
  
• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, L. Crow, R. G. Cooper, "High efficiency angular selective detection of thermal and cold neutrons", Proc. SPIE 6945-41 "Optics and Photonics in Global Homeland Security IV", Orlando, March 17-20 (2008).
  
  
• A. S. Tremsin, J. B. McPhate, J. V. Vallerga, O. H.W. Siegmund, J. S. Hull, W. B. Feller, L. Crow, R. G. Cooper, "High Resolution Neutron Imaging at High Counting Rates with Noiseless Readout", Proc. IEEE Nuclear Science Symposium, ISBN: 1-4244-0923-3, pp. 270-275, Hawaii, October 27-November 3, 2007.
  
  
• A. S. Tremsin, W. B. Feller, O. H. W. Siegmund, "High efficiency thermal neutron imaging with sub-microsecond timing resolution", IEEE Nuclear Science Symposium, ISBN: 1-4244-0561-0, ISSN 1082-3654, pp. 193-198,San Diego, October 2006.
  
  
• A.S. Tremsin, W.B. Feller, R.G. Downing, "Efficiency optimization of microchannel plate (MCP) neutron imaging detectors. I. Square channels with 10B doping", Nucl. Instrum. Meth. A 539/1-2, pp. 278-311 (2005).

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Neutron collimation and scatter rejection

• A.S. Tremsin, E.H. Lehmann, J.B. McPhate, J.V. Vallerga, O.H.W. Siegmund, B. White, P. White, W.B, Feller, F.C. de Beer, W. Kockelmann, "Quantification of Cement Hydration through Neutron Radiography with Scatter Rejection", IEEE Trans. Nucl. Sci. 62 pp. 1288-1294 (2015).
  
  
• A. S. Tremsin, N. Kardjilov, M. Dawson, M. Strobl, I. Manke, J. B. McPhate, J. V. Vallerga, O. H. W. Siegmund, W. B. Feller, "Scatter rejection in quantitative thermal and cold neutron imaging", Nucl. Instr. and Meth. A 651, pp.145-148 (2011).
  
  
• A.S. Tremsin, J.B. McPhate, E. H. Lehmann, J.V. Vallerga, O.H.W. Siegmund, W.B. Feller, "High Resolution Neutron Radiography with Very Compact and Efficient Neutron Collimators", Journal of Instrumentation, JINST 6 C01041; doi: 10.1088/1748-0221/6/01/C01041 (2011).
  
  
• A. S. Tremsin, D. S. Hussey, R. G. Downing, W. B. Feller, D. F. R. Mildner, D. L. Jacobson, M. Arif, O. H. W. Siegmund, "Neutron Collimation with Microchannel Plates: Calibration of Existing Technology and Near Future Possibilities", Proc. IEEE Nuclear Science Symposium, ISBN: 0-7803-9222-1, pp. 120-124, Puerto Rico, October 2005., IEEE Trans. Nucl. Sci. 54 (N2) pp.362-366 (2007).
  
  
• A. S. Tremsin, W. B. Feller, "The theory of compact and efficient circular-pore MCP neutron collimators", Nucl. Instr. Meth. A 556 pp.556-564 (2005).
  
  
• A. S. Tremsin, W. B. Feller, R. G. Downing, D. F. R. Mildner, "The efficiency of thermal neutron detection and collimation with Microchannel Plates of square and circular geometry", IEEE Trans. Nucl. Sci. 52 (N5) pp.1739-1744 (2005).
  
  
• A.S. Tremsin, W.B. Feller, R.G. Downing, "Very Compact High Performance Microchannel Plate Neutron Collimators",  IEEE Trans. Nucl. Sci. 51 (N3) pp.1020-1024 (2004).
  
  
• A.N. Brunton, J.E. Lees, G.W. Fraser, A.S. Tremsin, W.B. Feller, P.L. White, "MCP based X-ray collimators for lithograthy of semiconductor devices", Proc. SPIE 2805, pp.212-221, "Multilayer and Grazing Incidence X-ray/EUV Optics III", August 1996, Denver, Colorado, USA.

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Photon, neutron, electron counting detectors with high timing and spatial resolution

• A.S. Tremsin, J.V. Vallerga, J.B. McPhate, O.H.W. Siegmund, "Optimization of high count rate event counting detector with Microchannel Plates and quad Timepix readout", Nucl, Instr. Meth. A 787 (2015) pp. 20-25.
  
  
• A.S. Tremsin, J.V. Vallerga, J.B. McPhate, O.H.W. Siegmund, "Optimization of Timepix count rate capabilities for the applications with a repetitive input signal", Journal of Instrumentation JINST 9 C05026 (2014).
  
  
• E.K. Anderson, S. Rosen, P. Reinhed, J.D. Alexander, N. Sullivan, A. Tremsin, D. Gorelikov, H. Zettergren, H. Cederquist, H.T. Schmidt, "Improving Detection Efficiency in a Cryogenic Environment - Implications for DESIREE", Journal of Physics: Conference Series 635 (2015) 022039. DOI: 10.1088/1742-6596/635/2/022039
  
  
• O.H.W. Siegmund, et al., "Large area event counting detectors with high spatial and temporal resolution", Journal of Instrumentation JINST 9 C04002 (2014).
  
  
• John Vallerga, Anton Tremsin, Jeff DeFazio, Jerome Alozy and Timo Tick, "Optical MCP image tube with a quad Timepix readout: initial performance characterization", Journal of Instrumentation JINST 9 C05055 (2014).
  

• O.H.W. Siegmund, J.B. McPhate, A.S. Tremsin, J.V. Vallerga, H. Frisch, R. Wagner, A. Mane, J. Elam, G. Varner, "Large Area Flat Panel Photon Counting Imaging Detectors for Astronomy and Night Time Sensing", Advanced Maui Optical and Space Surveillance Technologies (AMOS) Conference, Symposium: Instrumentation, Sensors, and Systems, September 2013.
  
  
• O.H.W. Siegmund, J.B. McPhate. S.R. Jelinsky, J.V. Vallerga, A.S.  Tremsin, R. Hemphill, H.J. Frisch, R.G. Wagner, J. Elam, A. Mane, "Large Area Microchannel Plate Imaging Event Counting Detectors With Sub-Nanosecond Timing", IEEE Trans. Nucl. Sci. 60, pp. 923 - 931 (2013).
  
  
• A. S. Tremsin, J. V. Vallerga, J. B. McPhate, O. H. W. Siegmund, R, Raffanti, "High Resolution Photon Counting With MCP-Timepix Quad Parallel Readout Operating at > 1KHz Frame Rates", IEEE Trans. Nucl. Sci. 60 pp. 578-585 (2013).
  
  
• Oswald Siegmund, John Vallerga, Anton Tremsin, Jason McPhate, Henry Frisch, Jeffrey Elam, Anil Mane, Robert Wagner, G. Varner, "Large Area and High Efficiency Photon Counting Imaging Detectors with High Time and Spatial Resolution for Night Time Sensing and Astronomy", Advanced Maui Optical and Space Surveillance Technologies (AMOS) Conference, Symposium: Instrumentation, Sensors, and Systems, September 2012.
  
  
• O.H.W. Siegmund, J.B. McPhate. S.R. Jelinsky, J.V. Vallerga, A.S. Tremsin, R. Hemphill, H.J. Frisch, R.G. Wagner, J. Elam, A. Mane, "Development of large area photon counting detectors optimized for Cherenkov light imaging with high temporal and sub-mm spatial resolution ", Proceedings of Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), pp. 2063 - 2070, (2011) doi: 10.1109/NSSMIC.2011.6154420
  
  
• O.H.W. Siegmund, J.B. McPhate, A.S. Tremsin, S.R. Jelinsky, H.J. Frisch, J. Elam, A. Mane, "20 cm sealed tube photon counting detectors with novel microchannel plates for imaging and timing applications", Physics Procedia 01/2012; 37:803-810. DOI: 10.1016/j.phpro.2012.03.722.
  
  
• O. Siegmund, J. Vallerga, A. Tremsin, J. McPhate , "Microchannel Plate Imaging Photon Counters for Ultraviolet through NIR Detection with High Time Resolution", Proc. SPIE 8033-31, SPIE Defense, Security, and Sensing 2011, Conference 8033: "Advanced Photon Counting Techniques V", Orlando, Florida, April 2011.
  
  
• O. H. W. Siegmund; K. Fujiwara; R. Hemphill; S. R. Jelinsky; J. B. McPhate; A. S. Tremsin; J. V. Vallerga; H. J. Frisch; J. Elam; A. Mane; D. C. Bennis; C. A. Craven; M. A. Deterando; J. R. Escolas; M. J. Minot; J. M. Renaud "Advances in microchannel plates and photocathodes for ultraviolet photon counting detectors", Proc. SPIE. 8145, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVII, 81450J. (September 08, 2011) doi: 10.1117/12.894374.

• O. H. W. Siegmund, J. B. McPhate, J. V. Vallerga, A. S. Tremsin, S. R. Jelinsky , H. J. Frisch, and the LAPPD Collaboration, "Novel large format sealed tube microchannel plate detectors for Cherenkov timing and imaging", Nucl. Instr. Meth. A 639, pp.165-168 (2011).
  
  
• B. Adams, J. T.Anderson, K. Attenkofer, M. Bogdan, K. Byrum, G. Drake, J. Efflam, H. J. Frisch, J-F. C. Genat,  M. K. Heintz, Z. Insepov, V. Ivanov, E. N. May, T. Natoli, K. Nishimura, R. Northrop, A. Paramonov, M. Pellin, E. Ramberg, A. Ronzhin, D. Routkevitch, L. Ruckman, M. Sanchez, G. Sellberg, O. Siegmund, R. Stanek, F. Tang,  A. Tremsin,  G. Varner,  J. Va'Vra, H. H. Wang, H. Weerts, M. Wetstein, T. Zhao, A. Zinoviev, "A Design for Large-Area Fast Photo-detectors with Transmission-Line Readout and Waveform Sampling", 2009 16th IEEE-NPSS Real Time Conference (2009) pp. 49-61, doi: 10.1109/RTC.2009.5322059
  
  
• O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, W. B. Feller, "High Spatial and Temporal Resolution Neutron Imaging with Microchannel Plate Detectors", IEEE Trans. Nucl. Sci. 56, N3, pp. 1203-1209 (2009).
  
  
• O. H. W. Siegmund, J.V. Vallerga, B.Y. Welsh, A.S. Tremsin, J.B. McPhate, "High Spatial resolution GaN and Optical Photon Counting Detectors with sub-nanosecond timing for Astronomical and Space Sensing Applications", Proc. Conf. on Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, Hawaii, September 2008.
  
  
• R. Bellazzini, G. Spandre, M. Minuti, A. Brez, L. Baldini, L. Latronico, N. Omodei, C. Sgro', J. Bregeon, M. Razzano, M. Pinchera, A.S. Tremsin, J.B. McPhate, J.V. Vallerga, and O.H.W. Siegmund, "Single Photon Imaging at ultra-high resolution", Nucl. Instr. Meth. A. 591, pp. 125-128 (2008).
  
  
• R. Bellazzini, G. Spandre, M. Minuti, A. Brez, A. S. Tremsin, O.H.W. Siegmund, "Ultra High Resolution Imaging of Single and Multiple Coincidence Photons", Proc. IEEE Nuclear Science Symposium, ISBN: 1-4244-0923-3, MP3-1, Hawaii, October 27-November 3, 2007.
  
  
• O. H. W. Siegmund, J. V. Vallerga, A. S. Tremsin, J. B. Mcphate and W. B. Feller, "High spatial resolution neutron sensing microchannel plate detectors", Nucl. Instr. Meth. A 576, pp.178-182 (2007).
  
  
• Oswald Siegmund, John Vallerga, Anton Tremsin, and Jason McPhate, "Microchannel plates: recent advances in performance", Proceedings of SPIE -- Volume 6686, "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XV", Oswald H. W. Siegmund, Editor, 66860W (Sep. 21, 2007).
  
  
• J.V. Vallerga, J.B.  McPhate, A.S. Tremsin and O.H.W. Siegmund, "The current and future capabilities of MCP based UV detectors", proceedings of international conference on "Space Astronomy: The UV window to the Universe",  Dedicated to Dr. Willem Wamsteker, El Escorial (Spain), May 28 - June 1 2007, Astrophysics and Space Science 320 pp. 247-250 (2009).
  
  
• J.V. Vallerga, J.B. McPhate, A.S. Tremsin, O.H.W. Siegmund, B. Mikulec A.G. Clark, "Optically sensitive Medipix2 detector for adaptive optics wavefront sensing", Nucl. Instrum. Meth. A 546/1-2, pp. 263-269 (2005).
  
  
• J. B. McPhate, J. V. Vallerga, A. S. Tremsin, O. H. Siegmund, B. Mikulec, A. G. Clark, "A noiseless kilohertz frame rate imaging detector based on microchannel plates readout with the Medipix2 CMOS pixel chip", Proc. SPIE vol. 5881, "Infrared and Photoelectronic Imagers and Detector Devices; Randolph E. Longshore; Ed., San Diego August 2005, pp. 88-97 (2005).
  
  
• O. H. W. Siegmund, J. V. Vallerga, A. S. Tremsin, "Characterization of microchannel plate quantum efficiency", Proc. SPIE vol. 5898, "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV"; Oswald H. Siegmund; Ed., San Diego August 2005, pp. 113-123 (2005).
  
  
• J. V. Vallerga, A. S. Tremsin, J. B. McPhate, B. Mikulec, A. G. Clark, O. H. Siegmund, "Photon-counting arrays for AO wavefront sensor detectors", Proc. SPIE vol. 5903, "Astronomical Adaptive Optics Systems and Applications II"; Robert K. Tyson, Michael Lloyd-Hart; Eds., San Diego August 2005, pp 160-170 (2005).
  

• J.V. Vallerga, J. McPhate, B. Mikulec, A. Tremsin, A. Clark and O.Siegmund, "Noiseless imaging detector for adaptive optics with kHz frame rates", Proc. SPIE vol. 5490 "Advancements In Adaptive Optics", Glasgow, 2004, pp1256-1267 (2004).
  
  
• O. H. W. Siegmund, A. S. Tremsin and J. V. Vallerga "Advanced MCP Sensors for UV/visible Astronomy and Biology", Nuclear Instruments and Methods in Physics Research A 510 (2003) pp.185-89.
  
  
• A.S. Tremsin, J.V. Vallerga, O.H.W. Siegmund, "Image translational shifts in microchannel plate detectors due to the MCP channel bias", Nuclear Instruments and Methods in Physics Research (sect. A) 477 (2002) pp.262-267.
  
  
• A.S. Tremsin, O.H.W. Siegmund, "New Developments in the Position Sensitive Detectors Based on Microchannel Plates", Proceedings of 7th International Conference on Advanced Technology and Particle Physics (ICATPP-7), Villa Olmo, Como 15-19 October 2001. World Scientific. 2002, pp.615-19. Singapore.
  
  
• A.S. Tremsin, J.V. Vallerga, O.H.W. Siegmund, "Detector walk" in position-sensitive detectors with biased microchannel plates", Review of Scientific Instruments, 71 (2000) pp.3758-3761.
  
  
• A.S. Tremsin, O.H.W. Siegmund, M.A. Gummin, P.N. Jelinsky and J.M. Stock, "Moire interference with microchannel plates: artifacts and benefits", Applied Optics, v.38, n11, (1999) pp.2240-2248.
  
  
• A.S. Tremsin, O.H.W. Siegmund, "Measurements of metric nonlinearities of MCP-based  lobster eye x-ray telescope optics by Moire interferometry", Proc. SPIE 3356, pp.866-875, "Space Telescopes and Instruments V", Kona, Hawaii, March 1998.
  
  
• A.S. Tremsin, J.F. Pearson, G.W. Fraser, B.W. Feller and P. White, "Microchannel plate operation at high count rates: new results", Nuclear Instruments and Methods in Physics Research (section A), 379 (1996) pp.139-151.

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NASA astrophysical instrumentation

• J. Vallerga, J. McPhate, A. Tremsin, O. Siegmund, R. Raffanti, A. Seljak, H. Cumming, G. Varner, "Development of a flight qualified 100 x 100 mm MCP UV detector using advanced cross strip anodes and associated ASIC electronics", Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, edited by Jan-Willem A. den Herder, Tadayuki Takahashi, Marshall Bautz, Proc. of SPIE Vol. 9905, 99053F (2016). doi: 10.1117/12.2233697
  
  
• O. H. W. Siegmund, J. V. Vallerga, B. Welsh, J. B. McPhate, A. S. Tremsin, "High Speed Optical Imaging Photon Counting Microchannel Plate Detectors for Astronomical and Space Sensing Applications", Proc of Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, Hawaii, September 2009.
  
  
• O. H. W. Siegmund , B. Y. Welsh, J. V. Vallerga, A. S. Tremsin, J. B. McPhate, "High-performance microchannel plate imaging photon counters for spaceborne sensing", Proc. SPIE vol. 6220, "Spaceborne Sensors III", Orlando, Florida, May pp.53-64, 2006.
  
  
• O. H.W. Siegmund, J.V. Vallerga, J. McPhate and A.S. Tremsin, "Next generation microchannel plate detector technologies for UV Astronomy", Proc. SPIE vol. 5488 "UV-Gamma Ray Space Telescope Systems", Glasgow, June 2004, pp.789-800 (2004).
  
  
• O. H. W. Siegmund, J. V. Vallerga and A. S. Tremsin, "Advances in MCP Sensors for UV/visible Astronomy", Hubble's Science Legacy: Future Optical-Ultraviolet Astronomy from Space, eds. Kenneth R. Sembach, J. Chris Blades, Garth D. Illingworth and Robert C. Kennicutt, Jr., ISBN: 1-58381-136-2 ASP Conference Series, Vol. 291, 2003.
  
  
• S.B. Mende, H. Heetderks, H.U. Frey, M. Lampton, S.P. Geller, R. Abiad, O. Siegmund, A.S. Tremsin, J. Spann, H. Dougani, S.A. Fuselier, A.L. Magoncelli, M.B. Bumala, S. Murphree, T. Trondsen, "Far ultraviolet imaging from the IMAGE spacecraft: 2. Wideband FUV imaging", Space Science Reviews, 91 (2000), pp.271-285.
  
  
• O.H.W. Siegmund, P. Jelinsky, S. Jelinsky, J. Stock, J. Hull, D. Doliber, J. Zaninovich, A.S. Tremsin and K. Kromer, "High resolution cross delay line detectors for the GALEX mission", Proc. SPIE 3765, pp.429-440, "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X", Denver, July 1999.

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Novel electron multipliers

• O. H. W. Siegmund, J. B. McPhate, A. S. Tremsin, J. V. Vallerga, C. D. Ertley, N. J. Richner, T. M. Gerard, H. J. Frisch, J. W. Elam, A. U. Mane, R. G. Wagner, M. J. Minot, A. O'Mahony, C. A. Craven, "Application of atomic layer deposited microchannel plates to imaging photodetectors with high time resolution", Nucl. Instr. Meth A 787 (2015) 110-113.
  
  
• D. Gorelikov, N. Sullivan, P. de Rouffignac, H. Li, J. Narayanamoorthy, A.S. Tremsin, "Development of atomic layer deposition-activated microchannel plates for single particle detection at cryogenic temperatures",  J. Vac. Sci. Technol. A 32, 020605 (2014); http://dx.doi.org/10.1116/1.4862947
  
  
• O.H.W. Siegmund, N. Richner,  G. Gunjala, J.B. McPhate, A.S. Tremsin, H. Frisch, J. Elam, A. Mane, R. Wagner, M. Minot, C. Craven, "Performance Characteristics of Atomic Layer Functionalized Microchannel Plates", Proc. SPIE. 8859, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII 88590Y (September 26, 2013) doi: 10.1117/12.2024919.
  
  
• O.H.W. Siegmund, J.B. McPhate, A.S. Tremsin, S.R. Jelinsky, R. Hemphill, H.J. Frisch, J. Elam, A. Mane, LAPPD Collaboration, "Atomic layer deposited borosilicate glass microchannel plates for large area event counting detectors", Nucl. Instr. Meth. A 695. pp. 168-171 (2012) doi: 10.1016/j.nima.2011.11.022.
  
  
• D.R. Beaulieu, D. Gorelikov, H. Klotzsch, J. Legere, J. Ryan, P. de Rouffignac, K. Saadatmand, K. Stenton, N. Sullivan, A.S. Tremsin, "Timing resolution of fast neutron and gamma counting with plastic microchannel plates", Nucl. Instr. Meth. A 659, pp. 394-398 (2011).

• D.R. Beaulieu, D. Gorelikov, H. Klotzsch, P. de Rouffignac, K. Saadatmand, K. Stenton, N. Sullivan, A.S. Tremsin, "Plastic microchannel plates with nano-engineered films", Nucl. Instr. Meth. A 633, pp. S59-S61 (2011).
  
  
• D. R. Beaulieu, D. Gorelikov, H. Klotzsch, P. de Rouffignac, K. Saadatmand, K. Stenton, N. Sullivan, A.S. Tremsin, "Novel Fast Neutron Counting Technology for Efficient Detection of Special Nuclear Materials", IEEE Nuclear Science Symposium, Orlando, FL, October 2009, Technologies for Homeland Security, 2009. HST '09. IEEE Conference, pp. 295-301, 10.1109/THS.2009.5168049 (2009).
  
  
• D. R. Beaulieu, D. Gorelikov, P. de Rouffignac, K. Saadatmand, K. Stenton, N. Sullivan, A. S. Tremsin, "Nano-engineered Ultra High Gain Microchannel Plates", Nucl. Instr. Meth. A 607, pp. 81-84 (2009).
  
  
• A. S. Tremsin, H. F. Lockwood, D. R. Beaulieu, N. T. Sullivan, E. Munro, J. Rouse, "3D microscopic model of electron amplification in microchannel amplifiers for maskless lithography", Physics Procedia 1 (2008) 565-572.
  
  
• A. S. Tremsin, D. R. Beaulieu, H. F. Lockwood, "Advances in microchannel amplifiers for maskless lithography", Microelectronic Engineering 83 pp. 990-993 (2006).
  
  
• A.S. Tremsin, J.V. Vallerga, O.H.W. Siegmund, C. P. Beetz and R. W. Boerstler, "Thermal properties of silicon micromachined microchannel plates", Review of Scientific Instruments 75 (2004) pp.1068-1072. Also in Virtual Journal of Nanoscale Science & Technology, (a weekly multijournal compilation of the latest research on nanoscale systems), March 29, 2004, Volume 9, Issue 12.
  
  
• A. S. Tremsin, J. V. Vallerga, O. H. W. Siegmund, C. P. Beetz, R. W. Boerstler, "The latest developments of high gain Si microchannel plates", Proc. SPIE, vol. 4854, "Astronomical Telescopes and Instrumentation", Hawaii, August 2002, pp.215-224.
  
  
• O. H. W. Siegmund, A. S. Tremsin, C. P. Beetz, Jr., R. W. Boerstler, D. R. Winn, "Progress on development of silicon microchannel plates", Proc. SPIE, vol. 4497, pp.139-148, "X-Ray and Gamma-Ray Instrumentation for Astronomy XII", San Diego, July 2001.

• O.H.W. Siegmund, A.S. Tremsin, J.V. Vallerga, C.P. Beetz, Jr., D.R. Winn, "Silicon microchannel plates: initial results for photon counting detectors", Proc. SPIE, vol. 4140, pp.188-198, "X-Ray and Gamma-Ray Instrumentation for Astronomy XI", San Diego, California, July 30 - August 4, 2000.
  
  
• A.S. Tremsin, S.R. Jelinsky, O.H.W. Siegmund, "Quantum efficiency and spatial resolution of Microsphere plates stacked with Microchannel plates", Proc. SPIE 3114, pp.272-282, "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII", San Diego, August 1997.
  
  
• A.S. Tremsin, J.F. Pearson, J.E. Lees and G.W. Fraser, V. Korobov, I. Shariv, "Spatial uniformity and UV sensitivity of microsphere plates (MSPs)", Nuclear Instruments and Methods in Physics Research A 392 (1997) pp.354-358.
  
  
• A.S. Tremsin, J.F. Pearson, J.E. Lees and G.W. Fraser, "Low resistance conductively-cooled microchannel plates", Proc. SPIE 2808, pp.86-97, "EUV, X-ray and Gamma-ray Instrumentation for Astronomy VII", August 1996, Denver, Colorado, USA.
  
  
• A.S. Tremsin, J.F. Pearson, J.E. Lees and G.W. Fraser, "The Microsphere Plate: A New Type of Electron Multiplier", Nuclear Instruments and Methods in Physics Research (section A), 368 (1996) pp.719-730.
  
  
• A.S. Tremsin, J.F. Pearson, J.E. Lees and G.W. Fraser, "The Microsphere Electron Multiplier: Measurements and Modelling", Proc. SPIE 2518, pp.384-396, "EUV, X-ray and Gamma-ray Instrumentation for Astronomy VI", July 1995, San Diego, CA.
  
  

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Microchannel Plate readout technology

• J. V. Vallerga, A. S. Tremsin, R. Raffanti, and O. H. W. Siegmund, "Centroiding algorithms for high speed crossed strip readout of  microchannel plate detectors", Nucl. Instr. Meth. A 633, pp. S255-S258 (2011).
  
  
• J.V. Vallerga , Rick Raffanti, A.S. Tremsin, J.B. McPhate, and O.H.W. Siegmund, "MCP detector read out with a quad Timepix at kilohertz frame rates", Journal of Instrumentation, JINST 6 C01049; doi: 10.1088/1748-0221/6/01/C01049 (2011).
  
  
• O. H. W. Siegmund, J. V. Vallerga, J. McPhate, B. Welsh, A. S. Tremsin, "Cross Strip Readout Detectors for High Time Resolution Imaging in the 120nm to 900nm Wavelength Regime", Proceedings of Advanced Maui Optical and Space Surveillance Technologies, Maui, 2010.
  

• O. H. W. Siegmund, J. V. Vallerga, A. S. Tremsin, L. Stonehill, R. Shirey, M. Rabin, "Cross strip microchannel plate imaging photon counters with high time resolution", Proc. SPIE 7681-9, "Advanced Photon Counting Techniques IV", 5 - 9 April 2010, Orlando, Florida United States.
  

• J.V. Vallerga, A.S. Tremsin, J.B. McPhate, O.H.W. Siegmund, G. Varner, "Large format, high spatial and temporal resolution cross-strip readout MCP detectors for UV astronomy", SPIE 2010 - SPIE Astronomical Instrumentation, 27 June - 2 July 2010 - San Diego, CA, Proc. SPIE 773203.
  
  
• A. S. Tremsin, O. H. W. Siegmund, J. V. Vallerga, R. Raffanti, X. Michalet, S. Weiss, "High Speed Multichannel Charge Sensitive Data Acquisition System with Self Triggered Event Timing", IEEE Trans. Nucl. Sci. 56, N3, pp. 1148-1152 (2009).
  

• O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. S. Hull, R. Raffanti, "Development of cross strip MCP detectors for UV and optical instruments", Proc. SPIE 74350L, "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI"; Oswald H. Siegmund; Ed., San Diego August 2009.
  

• O. Siegmund, A. Tremsin, J. Vallerga, J. McPhate , "Microchannel plate cross-strip detectors with high spatial and temporal resolution, Nucl. Instr. Meth. A 610, pp.118-122 (2009).
  
  
• J. Vallerga, J. McPhate, A. Tremsin and O. Siegmund, "Optically sensitive MCP image tube with a Medipix2 ASIC readout", Proc. SPIE, vol. 7021-44, "Astronomical Telescopes and Instrumentation", France, June 2008.
  

• J. V. Vallerga, J. B. McPhate, A. S. Tremsin and O. H. W. Siegmund, "High resolution UV, Alpha and Neutron Imaging with the Timepix CMOS readout", Nucl. Instr. Meth. A591, pp. 151-154 (2008).
  
  
• O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, "High Performance Cross-Strip Detector Technologies", Proc. IEEE Nuclear Science Symposium, ISBN: 1-4244-0923-3, pp. 2246-2251, Hawaii, October 27-November 3, 2007.
  
  
• B. Mikulec, A. G. Clark, D. Ferrere, D. La Marra, J. B. McPhate, O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. Clement, C. Ponchut, J. -M. Rigal, "A noiseless kilohertz frame rate imaging detector based on microchannel plates read out with the Medipix2 CMOS pixel chip", Nucl. Instr. Meth. A 567, pp.110-113 (2006).
  
  
• A. S. Tremsin, O. H. W. Siegmund, J. V. Vallerga, J. S. Hull, "Novel high resolution readout for UV and X-ray photon counting detectors with microchannel plates", Proc. SPIE vol. 6276, 627616 "High Energy, Optical, and Infrared Detectors for Astronomy II", Dorn, Holland, Eds., Orlando, Florida, May 2006.
  

• J.V. Vallerga, J.B. McPhate, A.S. Tremsin, O.H.W. Siegmund, B. Mikulec A.G. Clark, "Noiseless, high frame rate (> kHz), photon counting arrays for use in the optical to the extreme UV", Proc. of 2005 AMOS technical conference, September 5-9, Wailea, Maui, Hawaii, 2005.
  
  
• B. Mikulec, A. G. Clark, J. Vallerga, O. H. W. Siegmund, J. McPhate, A. Tremsin, "A novel high resolution, high frame rate detector based on a micro-channel-plate read out with the Medipix2 counting CMOS pixel chip", IEEE Trans. Nucl. Sci. 52 (N4) pp.1021-1026 (2005).

• A. S. Tremsin, O. H. W. Siegmund, J. V. Vallerga, "A model of high resolution cross strip readout for photon and ion counting detectors", IEEE Trans. Nucl. Sci. 52 (N5) pp.1755-1759 (2005).
  
  
• A.S. Tremsin, O.H.W. Siegmund, J.V. Vallerga, J. Hull, "Cross Strip Readouts for Photon Counting Detectors with High Spatial and Temporal Resolution", IEEE Trans. Nucl. Sci.. 51 (N4) pp.1707-1711 (2004).
  
  
• A. S. Tremsin, J. V. Vallerga, O. H.W. Siegmund, J. S. Hull, "Centroiding algorithms and spatial resolution of photon counting detectors with cross strip anodes", Proc. SPIE, vol. 5164, "UV/EUV and Visible Space Instrumentation for Astronomy II", San Diego, August 2003, pp.113-124
  
  
• O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, R. Abiad and J. Hull, "High resolution cross strip anodes for photon counting detectors", Nuclear Instruments and Methods in Physics Research (sect. A) 504 (2003) pp.177-181.
  
  

• O.H.W. Siegmund, A.S. Tremsin, J.V. Vallerga and J. Hull, "Cross strip imaging anodes for microchannel plate detectors", IEEE Trans. Nucl. Sci. 48 (2001) pp.430-434.
  
  
• A.S. Tremsin, O. H. W. Siegmund, "Charge cloud asymmetry in detectors with biased MCPs", Proc. SPIE, vol. 4497, pp.127-138, "X-Ray and Gamma-Ray Instrumentation for Astronomy XII", San Diego, July 2001.
  
  
• O. H. W. Siegmund, A. S. Tremsin, R. Abiad, J. V. Vallerga, "Cross-strip anodes for microchannel pate detectors", SPIE Proc., vol. 4498, pp.131-140, "UV/EUV and Visible Space Instrumentation for Astronomy and Solar Physics", San Diego, July 2001.
  

• A.S. Tremsin, O.H.W. Siegmund, "Spatial distribution of electron cloud footprints from microchannel plates: measurements and modelling", Review of Scientific Instruments, 70 (1999) pp.3282-3288.
  
  
• O.H.W. Siegmund, J.S. Hull, A.S. Tremsin, J. Zaninovich, "Cross-strip anodes for microchannel plate imaging detectors", Proc. SPIE 3445, pp.397-406, "EUV, X-Ray, and Gamma-Ray Instrum. for Astronomy IX", July 1998.

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Photocathode development

• Anton S. Tremsin, Jeffrey S. Hull, Oswald H.W. Siegmund, Jason B. McPhate, John V. Vallerga, Amir M. Dabiran, "Opaque Gallium Nitride Photocathodes in UV Imaging Detectors with Microchannel Plates", Proc. SPIE. 8859, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII 88590X (September 26, 2013) doi: 10.1117/12.2025185
  
  
• A. M. Dabiran, A. M. Wowchak, P. P. Chow, J. Hull, A. S. Tremsin, O. H. Siegmund, "Semitransparent GaN-based photocathode structures for high-sensitivity UV imaging", Proc. SPIE 8145-17, "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVII", SPIE Annual Meeting, San Diego, August 201
  
  
• O. H. W. Siegmund, A. S. Tremsin, J. B. McPhate, J. S. Hull, "Gallium nitride photocathodes for imaging photon counters", SPIE 2010 - SPIE Astronomical Instrumentation, 27 June - 2 July 2010 - San Diego, CA, Proc. SPIE 77324T
  
  
• A. M. Dabiran, A. M. Wowchak, P. P. Chow, O. H.W. Siegmund, J. S. Hull, J. Malloy, A. S. Tremsin, "Direct deposition of GaN-based photocathodes on microchannel plates", Proc. SPIE, vol. 7212-38 "Optical Components and Materials VI", San Jose, CA January 2009.
  
  
• O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy and A. M. Dabiran, "Gallium Nitride Photocathode Development for Imaging Detectors", Proc. SPIE, vol. 7021-50, "Astronomical Telescopes and Instrumentation", France, June 2008.
  
  
• O. Siegmund, J. Vallerga, J. McPhate, J. Malloy, A. Tremsin, A. Martin, M. Ulmer, B. Wessels, "Development of GaN photocathodes for UV detectors", Nucl. Instr. Meth. A 567, pp.110-113 (2006).
  
  
• A. S. Tremsin, O. H. W. Siegmund, "The quantum efficiency and stability of UV and soft x-ray photocathodes", (Invited Paper), Proc. SPIE vol. 5920, "Ultrafast X-Ray Detectors, High-Speed Imaging, and Applications"; Stuart Kleinfelder, Dennis L. Paisley, Zenghu Chang, Jean-Claude Kieffer, Jerome B. Hastings; Eds, San Diego August 2005, pp. 111-123 (2005).
  
  
• M. P. Ulmer, B. Han, B. W. Wessels, O. H. W. Siegmund, A. S. Tremsin, "InGaN: characterization and first photo-cathode results", Proc. SPIE vol. 5898, "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV"; Oswald H. Siegmund; Ed., San Diego August 2005, pp. 103-112 (2005).
  
  
• A.S. Tremsin, O.H.W. Siegmund, "UV Photoemission Efficiency of Polycrystalline CVD Diamond Films", Diamond and Related Materials 14 (N1) pp.48-53 (2005).
  
  
• M. P. Ulmer, B. W. Wessels, B. Han, J. Gregie, A. S. Tremsin and O. H. W. Siegmund, "Advances in Wide-Band-Gap Semiconductor Based Photocathode Devices for Low Light Level Applications", Proc. SPIE, vol. 5164, "UV/EUV and Visible Space Instrumentation for Astronomy II", San Diego, August 2003, pp.144-154.
  
  
• O. H. W. Siegmund, A. S. Tremsin, A. Martin, J. Malloy, "GaN photocathodes for UV detection and imaging", Proc. SPIE, vol. 5164, "UV/EUV and Visible Space Instrumentation for Astronomy II", San Diego, August 2003, pp.134-143.
  
  
• A. S. Tremsin, O. H. W. Siegmund, "Quantum efficiency and stability of alkali halide UV photocathodes in the presence of electric field", Nuclear Instruments and Methods in Physics Research (sect. A) 504 (2003) pp.4-8.
  
  
• J.I. Larruquert, J.A. Mendez, J.A. Aznarez, A.S. Tremsin, O.H.W. Siegmund, "Optical properties and quantum efficiency of thin film alkali halides in the far ultraviolet", Applied Optics v.41, n13 (2002) pp.2532-2540.
  
  
• A.S.Tremsin, J.F.Pearson, A.P.Nichols, A. Owens, A.N. Brunton and G.W.Fraser, "X-ray-induced radiation damage in CsI, Gadox, Y2O2S and Y2O3 thin films", Nuclear Instruments and Methods in Physics Research A 459 (2001) pp.543-551.
  
  
• A.S. Tremsin, O.H.W. Siegmund, "UV radiation resistance and solar blindness of CsI and KBr photocathodes", IEEE Trans. Nucl. Sci. 48 (2001) pp.421-425.
  
  
• A.S. Tremsin, S. Ruvimov, O.H.W. Siegmund, "Structural transformation of CsI thin film photocathodes under exposure to air and UV irradiation", Nuclear Instruments and Methods in Physics Research (sect. A) 447 (2000) pp.614-618.
  
  
• A.S. Tremsin, O.H.W. Siegmund, "Polycrystalline diamond films as prospective UV photocathodes", Proc. SPIE, vol. 4139, pp.16-24, "Instrumentation for UV/EUV Astronomy and Solar Missions", San Diego, California, July 30 - August 4, 2000.
  
  
• A.S. Tremsin, O.H.W. Siegmund, "The stability of quantum efficiency and visible light rejection of alkali halide photocathodes", Proc. SPIE 4013, pp.411-420, "Astronomical Telescopes and Instrumentation", Munich, Germany, March 2000.
  
  
• A.S. Tremsin, O. H.W. Siegmund , "Heat enhancement of radiation resistivity of evaporated CsI, KI and KBr photocathodes", Nuclear Instruments and Methods in Physics Research (section A), 442 (2000) pp.337-341.
  
  
• A.S. Tremsin, O.H.W. Siegmund , "The dependence of quantum efficiency of alkali halide photocathodes on the radiation incidence angle", Proc. SPIE 3765, pp.441-451, "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X", Denver, July 1999.
  
  
• J.I. Larruquert, J.A. Mendez, J.A. Aznarez, A.S. Tremsin, O.H.W. Siegmund, "Optical constants of as-deposited and modified alkali halides, and the effect on their VUV quantum efficiency", Proc. SPIE 3765, pp.789-798, "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X", Denver, July 1999.
  

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Synchrotron instrumentation and experiments

• S. Neppl, Y.-S. Liu, C. Wu, A. Shavorskiy, I. Zegkinoglou, T. Troy, D. Slaughter, M. Ahmed, A.S. Tremsin, J. Guo, P.-A. Glans-Suzuki, M. Salmeron, H. Bluhm, and O. Gessner, "Toward Ultrafast In Situ X-Ray Studies of Interfacial Photoelectrochemistry", 19th International Conference on Ultrafast Phenomena, Okinawa, Japan, July 7-11, 2014, Ultrafast Phenomena XIX, Vol. 162 of the series Springer Proceedings in Physics (2015) 325-328. DOI: 10.1364/UP.2014.09.Wed.P3.14
  
  
• S. Neppl, A. Shavorskiy, I. Zegkinoglou, M. Fraund, D.S. Slaughter, T. Troy, M. Ahmed, S. Gul, B. Rude, J.Z. Zhang, A.S. Tremsin, Per-Anders Glans, Yi-Sheng Liu, C.H. Wu, J. Guo, M. Salmeron, H. Bluhm, and O. Gessner, "Capturing interfacial photo-electrochemical dynamics with picosecond time-resolved X-ray photoelectron spectroscopy", Emerging PhotonTechnologies for Chemical Dynamics, Faraday Discussions 171 (2014) 219-241. DOI:10.1039/C4FD00036F
  
  
• G.V. Lebedev, A.S. Tremsin, O.H.W. Siegmund, Y. Chen, Z.-X. Shen, Z. Hussain, "Complete Momentum and Energy Resolved TOF Electron Spectrometer for Time-Resolved Photoemission Spectroscopy", Nucl. Instr. Meth. A 582, pp.168-171 (2007).
  
  
• A.S. Tremsin, G.V. Lebedev, O.H.W. Siegmund, J.V. Vallerga,J.B. McPhate, Z. Hussain, "High resolution detection system for time of flight electron spectrometry", Nucl. Instr. Meth. A 582, pp.172-174 (2007).
  
  
• A. S. Tremsin, G. V. Lebedev, O. H. W. Siegmund, J. V. Vallerga, J. S. Hull, J. B. McPhate, C. Jozwiak, Y. Chen, J. H. Guo, Z. X. Shen, Z. Hussain, "High spatial and temporal resolution photon/electron counting detector for synchrotron radiation research", Nucl. Instr. Meth. A 580, pp.853-857 (2007).
  
  
• A. S. Tremsin, O. H.W. Siegmund, J. S. Hull, J. V. Vallerga, J. B. McPhate, J. Soderstrom, J. W. Chiou, J. -H. Guo, Z. Hussain, "High Resolution Photon Counting Detection System for Advanced Inelastic X-Ray Scattering Studies", IEEE Trans. Nucl .Sci. 54 (N3) pp. 706-709 (2007).
  
  
• W. E. Byrne, C-W. Chiu, J-H. Guo, F. Sannibale, J.S. Hull, O.H.W. Siegmund, A. S. Tremsin , J.V. Vallerga, "Bunch diffusion measurements at the advanced light source", Proceedings of European Particle Accelerator Conference, EPAC'06, Edinburgh, June 2006 .

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Biomedical imaging and instrumentation

• X. Michalet , R. A. Colyer, G. Scalia, A. Ingargiola, R. Lin, J. E. Millaud, S. Weiss, Oswald H. W. Siegmund, Anton S. Tremsin, John V. Vallerga, A. Cheng, M. Levi, D. Aharoni, K. Arisaka, F. Villa, F. Guerrieri, F. Panzeri, I. Rech, A. Gulinatti, F. Zappa, M. Ghioni, S. Cova, "Development of new photon-counting detectors for single-molecule fluorescence microscopy", Philosophical Transaction of the Royal Society B-Biological Sciences 368, Issue: 1611, Special Issue: SI, Article Number: 20120035 (2013) DOI: 10.1098/rstb.2012.0035
  
  
• R. A. Colyer, O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, S. Weiss, X. Michalet, "Phasor Imaging with a Widefield Photon-Counting Detector", J. Biomed. Opt. 17, 016008 (2012), DOI:10.1117/1.JBO.17.1.016008.
  
  
• X. Michalet, R. A. Colyer, G. Scalia, S. Weiss, O. H. Siegmund, A. S. Tremsin, J. V. Vallerga, F. A. Villa, F. Guerrieri, I. Rech, S. Tisa, A. Gulinatti, F. Zappa, M. Ghioni, S. Cova, "New photon-counting detectors for single-molecule fluorescence spectroscopy and imaging", Proc. SPIE 8033-44, SPIE Defense, Security, and Sensing 2011, Conference 8033: "Advanced Photon Counting Techniques V", Orlando, Florida, April 2011.
  
  
• X. Michalet, R. Colyer, O. Siegmund, A. Tremsin, J. Vallerga, S. Weiss, "H33D Gen II: a new photon counting camera for single-molecule imaging and spectroscopy", Biophysical Journal, Vol. 98, Issue 3, Supplement 1, pp.761a-762a (2010).
  
  
• X. Michalet, R. A. Colyer, J. Antelman, O.H.W. Siegmund, A. Tremsin, J.V. Vallerga, S. Weiss, "Single-quantum dot imaging with a photon counting camera", Current Pharmaceutical Biotechnology10(5), pp. 543-558 (2009).
  
  
• R. Colyer, O. Siegmund, A. Tremsin, J. Vallerga, S. Weiss, X. Michalet, "Phasor-based single-molecule fluorescence lifetime imaging using a wide-field photon-counting detector", Proc. SPIE. 7185, Single Molecule Spectroscopy and Imaging II, 71850T. (February 12, 2009) doi: 10.1117/12.809496
  

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