吉林大学学报(理学版)

• 物理 • 上一篇    下一篇

中子活化分析中煤样厚度及探测器位置的选择

王二永1, 马玉刚1, 龚亚林2, 张伟2, 李建1, 马赛1, 马纯辉1, 陆景彬1   

  1. 1. 吉林大学 物理学院, 长春 130012; 2. 丹东东方测控技术股份有限公司, 辽宁 丹东 118002
  • 收稿日期:2015-01-26 出版日期:2015-09-26 发布日期:2015-09-29
  • 通讯作者: 马玉刚 E-mail:mayugang@hotmail.com

Selection of Coal Thickness and DetectorPosition in Neutron Activation Analysis

WANG Eryong1, MA Yugang1, GONG Yalin2, ZHANG Wei2, LI Jian1, MA Sai1, MA Chunhui1, LU Jingbin1   

  1. 1. College of Physics, Jilin University, Changchun 130012, China;2. Dandong Dongfang Measurement & Control Co. LTD, Dandong 118002, Liaoning Province, China
  • Received:2015-01-26 Online:2015-09-26 Published:2015-09-29
  • Contact: MA Yugang E-mail:mayugang@hotmail.com

摘要:

利用MCNP5程序包模拟14 MeV脉冲中子照射一定厚度煤样, 并通过时间控制获得非弹γ能谱和俘获γ能谱, 再利用计数率的高低确定γ能谱的获取位置. 结果表明: 当煤样厚度为20 cm时, 非弹γ能谱的计数率达到饱和; 当煤样厚度为35 cm时, 俘获γ能谱的计数率达到饱和.

关键词: 中子感生瞬发&gamma, 射线分析方法, 俘获, 煤样厚度, &gamma, 能谱

Abstract:

Fourteen MeV pulsed neutron irradiated coal sample of certain thickness was simulated with the aid of MCNP5 package. Inelastic and capture γ spectra were acquired by controlling the tally time. Collection location of γ spectra is determined by count rates. Trends of inelastic and capture γ spectra of coal samples with different thickness were observed.

Key words:  prompt gamma neutron activation analysis (PGNAA), capture, coal sample thickness, &gamma, spectra

中图分类号: 

  • O571.33