纳米WS<sub>2</sub>和MoS<sub>2</sub>在西安脉冲堆中辐照损伤的计算机模拟

王立鹏; 潘孝兵; 朱养妮; 朱广宁; 江新标; 凤仪; 张学斌; 张忠兵

doi:10.11889/j.0253-3219.2013.hjs.36.110204

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纳米WS₂和MoS₂在西安脉冲堆中辐照损伤的计算机模拟

低能加速器技术、射线技术及应用 | 更新时间：2021-03-05

- 纳米WS₂和MoS₂在西安脉冲堆中辐照损伤的计算机模拟
- Computer simulation on irradiation damage of nanoscaled WS₂ and MoS₂ in Xi’an pulsed reactor
- 核技术 2013年36卷第11期文章编号：110204
- 作者机构：
  
  1. 西北核技术研究所
  2. 合肥工业大学
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（91026018）资助()
- DOI：10.11889/j.0253-3219.2013.hjs.36.110204
  中图分类号： TL411.4
- 纸质出版日期：2013-11-01
- 稿件说明：
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[1]王立鹏,潘孝兵,朱养妮,朱广宁,江新标,凤仪,张学斌,张忠兵.纳米WS_2和MoS_2在西安脉冲堆中辐照损伤的计算机模拟[J].核技术,2013,36(11):20-24.

WANG Lipeng, PAN Xiaobing, ZHU Yangni, et al. Computer simulation on irradiation damage of nanoscaled WS₂ and MoS₂ in Xi’an pulsed reactor[J]. Nuclear techniques, 2013, 36(11): 110204
[1]王立鹏,潘孝兵,朱养妮,朱广宁,江新标,凤仪,张学斌,张忠兵.纳米WS_2和MoS_2在西安脉冲堆中辐照损伤的计算机模拟[J].核技术,2013,36(11):20-24. DOI： 10.11889/j.0253-3219.2013.hjs.36.110204.

WANG Lipeng, PAN Xiaobing, ZHU Yangni, et al. Computer simulation on irradiation damage of nanoscaled WS₂ and MoS₂ in Xi’an pulsed reactor[J]. Nuclear techniques, 2013, 36(11): 110204 DOI： 10.11889/j.0253-3219.2013.hjs.36.110204.

摘要

采用蒙特卡罗程序（MCNP）对纳米材料WS2和MoS2在西安脉冲堆辐照实验下的位移损伤—原子离位数率进行了模拟计算与分析

确定了堆芯辐照样品内的中子注量率分布;对各样品的中子剂量率、γ剂量率进行了计算

采用典型的热中子反应堆的能谱加权

基于平均位移Kerma因子的方法

利用NJOY程序从最新的ENDF/B VII.1评价库中获取各元素的69群损伤截面

对各元素原子离位截面进行了计算

最终得到了各样品的原子离位数率。计算结果显示

纳米材料WS2和MoS2最大原子离位数率可达1.51?10-8DPA·s?1

且快中子对原子离位数率贡献要大于热中子。

Abstract

Background: The nanoscaled WS2 and MoS2 are regarded as the promising self-lubricating materials in the future

which could be widely used in the lubricating of space reactor and other devices. Purpose: The displacement-per-atom(DPA) rates for nanometer materials WS2 and MoS2 need to be evaluated under high neutron and gamma irradiations. Methods: We studied the DPA rates and concerning properties of nanometer materials WS2 and MoS2 in Xi’an pulsed reactor by using Monte Carlo(MCNP) code. Neutron flux distribution

total doses

and gamma doses inside the samples were determined. Based on the typical neutron spectrum of thermal reactors

the average displacement Kerma factor method was used to obtain the 69-group damage cross sections of each isotope by NJOY code from the new evaluated ENDF/B VII.1 database. The displacement cross sections were calculated in order to get the DPA rates. Results: The results showed that the maximum DPA rates for the nanometer materials WS2 and MoS2 could be 1.51?10-8 DPA·s?1. Conclusion: The nanoscaled WS2 and MoS2 can be used for a long time under high neutron and gamma irradiations because of their good resistance to irradiation.

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西安脉冲堆³He快中子夹心谱仪的方案设计

纳米WS2和MoS2在西安脉冲堆中辐照损伤的计算机模拟

Computer simulation on irradiation damage of nanoscaled WS2 and MoS2 in Xi’an pulsed reactor

DOI：10.11889/j.0253-3219.2013.hjs.36.110204

摘要

Abstract

关键词

Keywords

references

纳米WS₂和MoS₂在西安脉冲堆中辐照损伤的计算机模拟

Computer simulation on irradiation damage of nanoscaled WS₂ and MoS₂ in Xi’an pulsed reactor