A study of the moderator structure used in a small-size 14MeV neutron source （Ⅰ）

您当前的位置：

首页 >

文章列表页 >

A study of the moderator structure used in a small-size 14MeV neutron source （Ⅰ）

更新时间：2021-04-09

- A study of the moderator structure used in a small-size 14MeV neutron source （Ⅰ）
- NUCLEAR TECHNIQUES Issue 7, (1994)
- 作者机构：
  
  东北师范大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： O571.5
- Published：01 July 1994
- 稿件说明：
移动端阅览
[1]周明达,马维超,牛纪桢,李忠民,崔玉环.小型中子源14MeV中子慢化体结构的研究（Ⅰ）[J].核技术,1994(07):417-423.

A study of the moderator structure used in a small-size 14MeV neutron source （Ⅰ）[J]. Nuclear techniques, 1994, (7).
[1]周明达,马维超,牛纪桢,李忠民,崔玉环.小型中子源14MeV中子慢化体结构的研究（Ⅰ）[J].核技术,1994(07):417-423. DOI：

A study of the moderator structure used in a small-size 14MeV neutron source （Ⅰ）[J]. Nuclear techniques, 1994, (7). DOI：

摘要

在ＩＢＭＩ／ＰＣＡＴ计算机上使用ＴＡＭＡＫＥＲ—ＡＮＩＳＮ程序和４６群（中子２５群、光子２１群）ＵＷ截面数据库，对１４ＭｅＶ能量的中子源的慢化体结构进行模拟计算．其中慢化材料为聚乙烯，增强材料为铅．在计算中把铅的（ｎ，２ｎ）反应的影响作为裂变源引进迁移方程的源项中．计算的结果与实验相互印证．进一步找出铅和聚乙烯的最佳组合．在原理上得出铅在聚乙烯慢化体中峰热中子注量率的增强因子可大于３．０．

Abstract

Computer simulations of the moderator structure for 14MeV neutron source have been made by using TAMAKER- ANISN Program and 46 groups （25 neutron groups and 21 Photon groups） UW cross-section data with an IBM/PC AT computer.Polythene was chosen as the moderation material and lead as the intensifying msterial. In the calculation the （n

2n） reaction of lead was acted as a fission source introduced into the source term of the transport equation. The calculation results have been justified by the experiments and the optimum structural combination ofpolythene and lead has been found. In principle

the intensifying factor for the peak thermal neutron may be larger than 3.0 when using lead as the intensifying material in polyethene moderator.

关键词

Keywords

references

Views

199

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A Study of the moderator Structure used in a small-size 14MeV neutron source（Ⅱ）

Related Author

马维超

周明达

李忠民

牛纪桢

崔玉环

Related Institution

Northeast Normal University

AI问答

Address：2019 Jialuo Road, Jiading, Shanghai, China Postal code：201800
Tel：021-39194977 Email：LHB@sinap.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 沪ICP备05005479号-1 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
Total Visits：880780 Visits Today：307

⁰