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Bismuth-loaded plastic scintillators for gamma spectroscopy and neutron active interrogation

Authors :
S. Hunter
Larry Ahle
P. A. Thelin
Thomas M. Tillotson
Nerine J. Cherepy
P. R. Beck
S.A. Payne
Robert D. Sanner
Source :
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC).
Publication Year :
2012
Publisher :
IEEE, 2012.

Abstract

Bismuth-loaded plastic scintillators capable of gamma spectroscopy are being scaled up to multiple cubic inch sizes. High light yields of >38,888 Ph/MeV are obtained with Iridium-complex fluors due to efficient harvesting of both singlet and triplet excitons, providing energy resolution of ~10% at 662 keV for 3 in3 scintillators. Although singlet fluors provide a poorer light yield of ~12,888 Ph/MeV and resolution at 662 keV of 14% in the Bismuth-loaded plastics, the fast decay time of

Details

Database :
OpenAIRE
Journal :
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)
Accession number :
edsair.doi...........5e61eb0f51ec59744e8e7ba1b9c9b550
Full Text :
https://doi.org/10.1109/nssmic.2012.6551455