Measurement of Neutron Source Energy Spectrum Using BF<sub>3</sub> Bonner Multisphere Spectrometer

doi:10.7652/xjtuxb202009015

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Measurement of Neutron Source Energy Spectrum Using BF₃ Bonner Multisphere Spectrometer

更新时间：2025-07-09

- Measurement of Neutron Source Energy Spectrum Using BF₃ Bonner Multisphere Spectrometer
- Vol. 54, Issue 9, Pages: 136-141+172(2020)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202009015
  CLC： TL811.2
- Online First：10 September 2020，
  
  Published：2020
- 稿件说明：
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Measurement of Neutron Source Energy Spectrum Using BF₃ Bonner Multisphere Spectrometer[J]. 2020, 54(9): 136-141+172. DOI: 10.7652/xjtuxb202009015.
DOI：

Measurement of Neutron Source Energy Spectrum Using BF₃ Bonner Multisphere Spectrometer[J]. 2020, 54(9): 136-141+172. DOI: 10.7652/xjtuxb202009015. DOI：

摘要

为解决

He气体短缺且价格日益昂贵所造成的中子能谱测量装置灵敏元缺乏问题

研制了一套BF

正比计数管多球谱仪系统。基于蒙特卡罗方法对Bonner多球谱仪系统的细致结构进行建模

模拟计算得到了探测器能量响应灵敏度; 在中国原子能科学研究院的高压倍加器上使用2.86 MeV与14.84 MeV能量的中子对谱仪系统的探测器能量响应灵敏度进行了标定

结合模拟结果确定了谱仪系统在实验条件下的能量响应灵敏度; 使用此谱仪系统对

241

Am-Be中子源能谱进行了测量

对多球谱仪测量结果使用自编Gravel算法进行逆卷积解谱

解谱所得能谱与

241

Am-Be中子源标准能谱的对比结果表明

在总体不确定度小于21.46%的范围内二者符合良好

验证了整套多球系统具有较高的可靠性。该三氟化硼多球谱仪系统有望在加速器、反应堆及同位素中子源环境的中子能谱与剂量检测中得到更为广泛的应用。

Abstract

To solve the problem of lacking sensitive elements in the neutron energy spectrum measuring device caused by the shortage of

He gas and the increasingly expensive price

a set of BF

proportional counter multisphere spectrometer system is developed. Based on the Monte Carlo method

the detailed structure of the multisphere spectrometer system is modeled

and the energy sensitivity of the detector is obtained through simulation calculation. The energy response sensitivity of the spectrometer system is calibrated using 2.86 MeV and 14.84 MeV energy neutrons on the Cockcroft-Walton accelerator in China Institute of Atomic Energy

and the energy re

sponse sensitivity of the spectrometer system under experimental conditions is determined with the simulation results. Using this spectrometer system

the energy spectrum of the

241

Am-Be neutron source is measured

and the measurement results are deconvoluted using the self-edited Gravel algorithm. Comparison of

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references

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⁰

Measurement of Neutron Source Energy Spectrum Using BF3 Bonner Multisphere Spectrometer

DOI：10.7652/xjtuxb202009015

摘要

Abstract

关键词

Keywords

references

Measurement of Neutron Source Energy Spectrum Using BF₃ Bonner Multisphere Spectrometer