<sup>115</sup>In中子非弹性散射截面的实验测量及蒙特卡罗修正

王攀; 肖军; 李映映; 李子越; 汪超

doi:10.11889/j.0253-3219.2016.hjs.39.040201

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¹¹⁵In中子非弹性散射截面的实验测量及蒙特卡罗修正

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- ¹¹⁵In中子非弹性散射截面的实验测量及蒙特卡罗修正
- Experimental measurement and Monte Carlo correction of neutron inelastic scattering cross section of ¹¹⁵In
- 核技术 2016年39卷第4期文章编号：040201
- 作者机构：
  
  1.四川大学原子核科学技术研究所成都 610065;
  2.中国工程物理研究院中子物理学重点实验室绵阳 621900
- 作者简介：
  
  王攀,女,1990年出生,2016年毕业于四川大学,现为现硕士研究生,研究方向为核能与核技术工程
  汪超,E-mail:wc923570321@qq.com
- 基金信息：
  
  中国工程物理研究院中子物理重点实验室项目(No.2014BA06)资助 Supported by Key Laboratory of Neutron Physics, China Academy of Engineering Physics (No.2014BA06)()
- DOI：10.11889/j.0253-3219.2016.hjs.39.040201
  中图分类号： TL99
- 收稿日期：2015-12-29，
  
  录用日期：2016-01-07，
  
  纸质出版日期：2016-01-25
- 稿件说明：
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王攀, 肖军, 李映映, 等. ¹¹⁵In中子非弹性散射截面的实验测量及蒙特卡罗修正[J]. 核技术, 2016,39(4):040201

Pan WANG, Jun XIAO, Yingying LI, et al. Experimental measurement and Monte Carlo correction of neutron inelastic scattering cross section of ¹¹⁵In[J]. Nuclear techniques, 2016, 39(4): 040201
王攀, 肖军, 李映映, 等. ¹¹⁵In中子非弹性散射截面的实验测量及蒙特卡罗修正[J]. 核技术, 2016,39(4):040201 DOI： 10.11889/j.0253-3219.2016.hjs.39.040201.

Pan WANG, Jun XIAO, Yingying LI, et al. Experimental measurement and Monte Carlo correction of neutron inelastic scattering cross section of ¹¹⁵In[J]. Nuclear techniques, 2016, 39(4): 040201 DOI： 10.11889/j.0253-3219.2016.hjs.39.040201.

摘要

115

In是一种重要的活化材料

准确测量它的中子非弹性散射截面数据对中子注量监测具有重要意义。在四川大学原子核科学技术研究所2.5MV静电质子加速器上

利用核反应D(d

He产生的单能中子

以

197

Au作为标准

采用活化法测量了2.95MeV、3.94MeV、5.24MeV能点的

115

In中子非弹性散射截面。用Monte Carlo程序MCNPX(Monte Carlo N-Particle eXtended)对靶头材料、冷却水层和样品的包层材料等引起的多次散射效应及注量率衰减效应等进行了修正计算

得到最终结果与Loevestam的计算值符合较好

并且实验中可通过减小靶管、靶底衬、水层及样品的包层材料等厚度来减小多次散射效应和自屏蔽效应的影响。

Abstract

Background:

As a kind of important activating material

accurate measurement of

115

In neutron inelastic scattering cross section data of neutron flux monitoring is of great significance.

Purpose:

The purpose is to measure

115

In neutron inelastic scattering cross section

and compare the results with the existing data.

Methods:

The cross section at 2.95 MeV

3.94 MeV and 5.24 MeV was measured using the activation technique at a 2.5 MeV electrostatic accelerator of Sichuan University

and the reaction of D(d

He was used for neutron sources. The deflections which were caused by multiple scattering and self-shielding of the experiment were corrected with MCNPX.

Results:

115

In neutron inelastic scattering cross section data at three energy values were obtained after Monte Carlo correction and the results fit well with the calculated values of Loevestam.

Conclusion:

The effect of multiple scattering effects and self-shielding effect can be reduced by reducing the thickness of the target tube

bottom lining

water layer and cladding material of the sample.

关键词

Keywords

references

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WU Zhihua . Experimental method of nuclear physics . Beijing:Higher Education Press , 1997 .

Loevestam G , Hult M , Fessler A . Measurement of neutron excitation functions using wide energy neutron beams . Nuclear Instruments & Methods in Physics Research , 2007 . A580 ( 3 ): 1400 - 1409 .

Smith D L , Meadows J W . Fast neutron excitation of isomeric states of indium . Nuclear Science and Engineering , 1976 . 60 319 - 322 .

Martin H C , Diven B C , Taschek R F . Cross sections for production of In 115m and Au 197m by inelastic scattering of neutrons . Physical Review , 1954 . 93 ( 1 ): 199 - 204 .

史淑廷 , 罗小兵 , 王磊 . 98 Mo中子俘获截面的实验测量及Monte Carlo修正 . 清华大学学报 , 2007 . 47 ( S1 ): 1076 - 1080 .

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裴鹿成 , 王仲奇 . Monte Carlo方法及其应用 . 北京:海洋出版社 , 1998 . 122 .

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115In中子非弹性散射截面的实验测量及蒙特卡罗修正

Experimental measurement and Monte Carlo correction of neutron inelastic scattering cross section of 115In

DOI：10.11889/j.0253-3219.2016.hjs.39.040201

摘要

Abstract

关键词

Keywords

references

¹¹⁵In中子非弹性散射截面的实验测量及蒙特卡罗修正

Experimental measurement and Monte Carlo correction of neutron inelastic scattering cross section of ¹¹⁵In