Title :
High detection efficiency ZnS scintillator for a fiber-coded linear neutron detector for thermal neutron scattering instruments
Author :
Nakamura, T. ; Schooneveld, E.M. ; Rhodes, N.J. ; Katagiri, M. ; Tsutsui, N. ; Toh, K. ; Sakasai, K. ; Soyama, K.
Author_Institution :
Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, JAPAN
Abstract :
High detector efficiency ZnS/6LiF scintillator and ZnS/10B2O3 ceramic scintillator were developed for a fiber-coded linear neutron detector for thermal neutron detection. Detector performances of the detector equipped with such scintillator strips were evaluated in terms of neutron detector efficiency, gamma sensitivity, and quiet count rate. The detector equipped with the ZnS/6LiF scintillator that contained twice amount of 6Li compared to the standard scintillator (ZnS/6LiF scintillator produced by AST Co Ltd) exhibited about 30% higher detector efficiency for 1-Å neutrons. The fiber-coded detector equipped with the ZnS/10B2O3 ceramic scintillator also exhibited about 30% larger neutron counts than the detector made with the standard scintillator. Moreover, the scintillation light of the ZnS/10B2O3 ceramic scintillator exhibited 40% shorter decay time, indicating a potential for higher count rate capability.
Keywords :
Ceramics; Gamma ray detection; Gamma ray detectors; Gas detectors; Instruments; Neutron spin echo; Performance evaluation; Solid scintillation detectors; Strips; Zinc compounds;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2008.4774623
