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:
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.
Experimental measurement and Monte Carlo correction of neutron inelastic scattering cross section of 115In
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:
2
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:
2
The purpose is to measure
115
In neutron inelastic scattering cross section
and compare the results with the existing data.
Methods:
2
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
n)
3
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:
2
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:
2
The effect of multiple scattering effects and self-shielding effect can be reduced by reducing the thickness of the target tube
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