Neutron detection with single crystal organic scintillators

Natalia P. Zaitseva; Jason Newby; Sebastien Hamel; Leslie Carman; Michelle Faust; Vincenzo Lordi; Nerine J. Cherepy; Wolfgang Stoeffl; Stephen A. Payne

doi:10.1117/12.829870

11 September 2009 Neutron detection with single crystal organic scintillators

Natalia P. Zaitseva, Jason Newby, Sebastien Hamel, Leslie Carman, Michelle Faust, Vincenzo Lordi, Nerine J. Cherepy, Wolfgang Stoeffl, Stephen A. Payne

Author Affiliations +

Proceedings Volume 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI; 744911 (2009) https://doi.org/10.1117/12.829870
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

Detection of high-energy neutrons in the presence of gamma radiation background utilizes pulse-shape discrimination (PSD) phenomena in organics studied previously only with limited number of materials, mostly liquid scintillators and single crystal stilbene. The current paper presents the results obtained with broader varieties of luminescent organic single crystals. The studies involve experimental tools of crystal growth and material characterization in combination with the advanced computer modeling, with the final goal of better understanding the relevance between the nature of the organic materials and their PSD properties. Special consideration is given to the factors that may diminish or even completely obscure the PSD properties in scintillating crystals. Among such factors are molecular and crystallographic structures that determine exchange coupling and exciton mobility in organic materials and the impurity effect discussed on the examples of trans-stilbene, bibenzyl, 9,10- diphenylanthracene and diphenylacetylene.

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Natalia P. Zaitseva, Jason Newby, Sebastien Hamel, Leslie Carman, Michelle Faust, Vincenzo Lordi, Nerine J. Cherepy, Wolfgang Stoeffl, and Stephen A. Payne "Neutron detection with single crystal organic scintillators", Proc. SPIE 7449, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI, 744911 (11 September 2009); https://doi.org/10.1117/12.829870

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