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요약정보
用于4πβ-γ符合测量的4π多丝正比室研制 / A 4π Multi-wire Proportional Chamber for the 4πβ-γ Coincidence Measurement
Resource Type
Academic Journal
Authors
杨杰
;
张劲松
;
储素云
;
王旭
;
郭翔博
;
罗宁
;
罗老永
;
王玮
;
漆明森
;
YANG Jie
;
ZHANG Jinsong
;
CHU Suyun
;
WANG Xu
;
GUO Xiangbo
;
LUO Ning
;
LUO Laoyong
;
WANG Wei
;
QI Mingsen
Source
同位素 / Journal of Isotopes
. 36(2):212-218
Subject
4π多丝正比室
4πβ-γ符合测量方法
坪曲线
β探测器
Language
Chinese
ISSN
1000-7512
Online Access
Find it @ DONGA
초록
4πβ-γ符合测量装置的β探测器通常为单丝结构的正比计数器,由于其电场分布呈发散状,探测面积有限,因此只能进行放射性点源的活度测量.为使4πβ-γ符合测量装置直接测量大面积放射源活度的要求,研制用作4πβ-γ符合测量装置β探测器的4π多丝正比室,并进行β坪曲线测试和本底测量.结果表明,β坪曲线的坪长约270 V,上排和下排阳极丝的坪斜分别为8.3‰和9.6‰(60Co),8.3‰和8.9‰(90Sr-90Y),坪斜均在10%.以内;本底计数率均在10 s-1以内.因此,4π多丝正比室可以作为4πβ-γ符合测量装置的β探测器进行进一步的研究.
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