中子入射砷核同位素反应全套微观数据的计算与分析

魏波; 张正军; 童楚楚; 陈金根; 胡继峰

doi:10.11889/j.0253-3219.2018.hjs.41.070502

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中子入射砷核同位素反应全套微观数据的计算与分析

核物理、交叉学科研究 | 更新时间：2021-05-19

- 中子入射砷核同位素反应全套微观数据的计算与分析
- Theoretical calculations and analysis of the full set of microcosmic data for n+^{74, 75, 77, 79}As nuclear reaction
- 核技术 2018年41卷第7期文章编号：070502
- 作者机构：
  
  1.西北大学物理学院西安 710127
  2.中国科学院上海应用物理研究所嘉定园区上海 201800
- 作者简介：
  
  [ "魏波, 男, 1992年出生, 2018年于西北大学物理学院获硕士学位, 主要从事计算物理研究与学习", "WEI Bo, male, born in 1992, graduated from Northwest University with a master's degree in 2018, mainly engaged in the research and study of computational physics" ]
  张正军, E-mail:zhangzj@nwu.edu.cn ZHANG Zhengjun, E-mail: zhangzj@nwu.edu.cn
- 基金信息：
  
  中国科学院战略性先导科技专项(XDA02010200)
- DOI：10.11889/j.0253-3219.2018.hjs.41.070502
  中图分类号： TL32
- 收稿日期：2018-02-06，
  
  修回日期：2018-03-27，
  
  纸质出版日期：2018-07-10
- 稿件说明：
移动端阅览
魏波, 张正军, 童楚楚, 等. 中子入射砷核同位素反应全套微观数据的计算与分析[J]. 核技术, 2018,41(7):070502

Bo WEI, Zhengjun ZHANG, Chuchu TONG, et al. Theoretical calculations and analysis of the full set of microcosmic data for n+^{74, 75, 77, 79}As nuclear reaction[J]. Nuclear techniques, 2018, 41(7): 070502
魏波, 张正军, 童楚楚, 等. 中子入射砷核同位素反应全套微观数据的计算与分析[J]. 核技术, 2018,41(7):070502 DOI： 10.11889/j.0253-3219.2018.hjs.41.070502.

Bo WEI, Zhengjun ZHANG, Chuchu TONG, et al. Theoretical calculations and analysis of the full set of microcosmic data for n+^{74, 75, 77, 79}As nuclear reaction[J]. Nuclear techniques, 2018, 41(7): 070502 DOI： 10.11889/j.0253-3219.2018.hjs.41.070502.

摘要

基于光学模型假设和中子与天然砷反应的总截面、去弹截面以及弹性散射角分布的实验数据，获得了一组0.1~20 MeV能量区域内普适于中子与砷核同位素反应的光学势参数。并以该组光学模型参数为前提，利用以光学模型、扭曲波Born近似理论、统一的Hauser-Feshbach统计理论和激子模型等理论为核心的UNF程序，计算了中子与As及其同位素的反应截面、能谱和双微分截面值，并对理论计算值和实验数据进行了比较和分析，理论计算结果与实验数据符合较好，同时给出了无实验数据的区域的理论结果。

Abstract

Background

As one of the fourth generation of nuclear energy system

thorium molten salt reactor nuclear energy system (TMSR) has been greatly improved in sustainability

safety

economy and reliability. In the design and manufacture of TMSR

a large number of nuclear reaction data is indispensable.

Purpose

The full set of microcosmic data for n+

As reaction

including the theoretical calculations of total cross section

elastic cross section

various of reaction channels cross section

elastic and inelastic scattering angular distribution

energy spectra and double differential cross sections for six kinds of emitted particles (n

He-3)

would be calculated.

Methods

Based on the assumption of the optical model and the experimental data of total cross section and elastic scattering angular distributions for n+

As reaction

a set of optimal optical potential parameters which universally suitable for n+

As are obtained. On the premise of the parameters

the cross sections

energy spectra and double differential cross sections for n+

As reaction are calculated and analyzed by the UNF program which based on the optical model

distorted wave Bom approximation theory

the unified Hauser-Feshbach theory and exciton model.

Results

The theoretical results of the full set of microcosmic data are in agreement with the experimental data

and the theoretical results of regions without experimental data are given.

Conclusion

The full set of microcosmic data for n+

As reaction based on this set of optical potential parameters is reasonable

the main theoretical model can describe the nuclear reaction commendably

the full set of microcosmic data obtained in this work can meet the requirements of nuclear engineering and medicine

it also has significance for the study of nuclear reaction.

关键词

Keywords

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