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A NEUTRON DETECTOR USING SILICON PIN PHOTODIODES FOR PERSONAL NEUTRON DOSIMETRY

被引：30
作者：
AOYAMA, T
OKA, Y
HONDA, K
MORI, C
机构：
[1] Department of Nuclear Engineering, Nagoya University, Nagoya
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1992年 / 314卷 / 03期
关键词：
D O I：
10.1016/0168-9002(92)90253-Z
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A highly sensitive and small sized neutron detector was devised for use as a personal neutron dosimeter using a silicon PIN photodiode and a gadolinium-foil converter. A detection efficiency of 5.6% was obtained for thermal neutrons by detecting internal-conversion electrons emitted from neutron-captured gadolinium. The gamma-ray component contained in the output pulses was cancelled almost completely by using a twin photodiode with a tin foil instead of the gadolinium-foil converter. A low detection limit for neutron flux density of 3.1 X 10(2) cm-2 s-1 was obtained for thermal to 10 keV neutrons with a measurement time of 3 s under gamma-ray background with a dose rate of 25-mu-Sv/h.
引用
收藏
页码：590 / 594
页数：5
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