Neutron scintillators with high detection efficiency
Neutron scintillators with high detection efficiency
复制标题
DOI：
10.1016/j.nima.2004.05.005
复制
发表时间：
2004-08-21
影响因子：
1.4
通讯作者：
Sakasai, K
中科院分区：
文献类型：
--
作者：
Kojima, T;Katagiri, M;Sakasai, K
We have developed three kinds of phosphor/neutron-converter scintillators aiming to increase the detection efficiency of the neutron imaging detectors. One is the ZnS:Ag/(LiF)-Li-6 (powder) scintillator, which contained (LiF)-Li-6 about twice in amount comparing to the commercial product (Bicron, BC-704) and painted in a sheet, and the 0.4-mm-thick scintillator sheet exhibited the detection efficiency of 43.5% for thermal neutrons. This value was improved similar to1.5 times than that of BC-704. Another developed scintillator was a ZnS:Ag/(B2O3)-B-10 (powder), which contained B-10 as a neutron converter. The scintillator was fabricated by sintering up to the temperature of 500 or 600degreesC, and it exhibited the detection efficiency of 30% for thermal neutrons. Moreover, we developed ZnS:Ag/(B2O3)-B-10 glass-scintillator, which was fabricated by increasing the amount of (B2O3)-B-10 Up to 70-90% of the constituents and by sintering the scintillator materials up to the temperature of 650degreesC. The fabricated glass scintillators, which had a thickness of 0.9-1 mm, exhibited the detection efficiency of 20-40% for thermal neutrons. (C) 2004 Elsevier B.V. All rights reserved.
