Eliminating the irradiation effects in BF<sub>3</sub> counter by high voltage modulating

Chunmei Zhou; Miaosun Chen; Panshui Yu; Runsheng Hong

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Eliminating the irradiation effects in BF₃ counter by high voltage modulating

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- Eliminating the irradiation effects in BF₃ counter by high voltage modulating
- Nuclear Techniques Vol. 06, Issue 1, (1983)
- 作者机构：
  
  中国科学院原子能研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：07 March 1981，
  
  Published：1983-02
- 稿件说明：
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Chunmei Zhou, Miaosun Chen, Panshui Yu, et al. Eliminating the irradiation effects in BF₃ counter by high voltage modulating[J]. Nuclear techniques, 1983, 06(1): 36-38,76.
DOI：

Chunmei Zhou, Miaosun Chen, Panshui Yu, et al. Eliminating the irradiation effects in BF₃ counter by high voltage modulating[J]. Nuclear techniques, 1983, 06(1): 36-38,76. DOI：

摘要

七十年代，缓发中子测铀技术受到极大重视，并得到了引人注目的发展。这是可在现场进行非破坏性分析铀含量的新技术。为了应用这种技术，我们在高压倍加器上用脉冲调制的

）

He反应产生的14MeV中子照射铀矿模拟井，然后用浓缩

B的BF

计数管测量铀裂变产物放出的缓发中子，进行室内测铀井模拟试验。试验中观测到，随着14MeV中子通量的增加，用直流高压工作的BF

计数管缓发中子计数与14MeV中子通量监督器计数之比值不是常数，而是逐渐增加；和通常工作的BF

计数管相比较，它的坪曲线和脉冲高度分布谱也有明显畸变。这与直流高压工作的BF

计数管也受到大量14MeV中子照射直接有关。这种现象被称为BF

计数管的辐照效应。在其它中子实验中，常在距产生中子的靶室适当远处放一个BF

计数管进行中子通量相对测量，当BF

计数管靠近中子靶室时，也曾观测到BF

计数管的辐照效应。

Abstract

In this paper

we have briefly described the method

the electronics circuit and the performance test of eliminating the irradiation effects in BF

counter by high voltage modulating.

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references

缓发中子测井协作组，原子能科学技术， 2 , 109 （ 1977 ）.

A. J. Stokes et al . , IEEE Trans. Nucl. Sci., NS 13 , 1 , 630 ( 1966 ).

陈玉华等，原子能科学技术， 4 , 458 （ 1979 ）.

A. E. Evans et al . , Nucl. Instr. Meth ., 133 , 577 ( 1976 ).

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Eliminating the irradiation effects in BF3 counter by high voltage modulating

DOI：

摘要

Abstract

关键词

Keywords

references

Eliminating the irradiation effects in BF₃ counter by high voltage modulating