Nuclear Techniques ›› 2020, Vol. 43 ›› Issue (8): 80501-080501.doi: 10.11889/j.0253-3219.2020.hjs.43.080501

• NUCLEAR PHYSICS, INTERDISCIPLINARY RESEARCH • Previous Articles    

Neutron capture cross section measurement of 197Au with pulse height weighting techniques

Xinxiang LI1,2,Longxiang LIU1,3,Wei JIANG4,5,Jie REN6,Hongwei WANG1,2,3(),Gongtao FAN1,3,Xiguang CAO1,2,3,Xinrong HU1,2,Yue ZHANG1,2,Junwen WANG1,7,Zirui HAO1,2,Bing JIANG1,2,Xiaohe WANG1,Jifeng HU1,Jincheng WANG8,Dexin WANG8,Suyalatu ZHANG8,Yingdu LIU9,Xu MA9,Chunwang MA10,Yuting WANG10,Zhendong AN1,11,Jianjun HE12,Jun SU12,Liyong ZHANG12   

  1. 1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2.University of Chinese Academy of Sciences, Beijing 100049, China
    3.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
    4.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
    5.China Spallation Neutron Source, Dongguan 523803, China
    6.China Institute of Atomic Energy, Beijing 102413, China
    7.ShanghaiTech University, Shanghai 201210, China
    8.Institute of Nuclear Physics, Inner Mongolia University For The Nationalities, Tongliao 028000, China
    9.Xiangtan University, Xiangtan 411105, China
    10.Henan Normal University, Xinxiang 453007, China
    11.Sun Yat-sen University, Zhuhai 519082, China
    12.Beijing Normal University, Beijing 100875, China
  • Received:2020-04-06 Revised:2020-05-06 Online:2020-08-15 Published:2020-08-12
  • Contact: Hongwei WANG E-mail:wanghongwei@zjlab.org.cn
  • About author:LI Xinxiang, male, born in 1994, graduated from University of South China in 2016, doctoral student, focusing on particle physics and nuclear physics
  • Supported by:
    National Natural Science Foundation of China(11875311)

Abstract: Background

Pulse height weighting technology is a data processing method for measuring neutron capture cross section with C6D6 detector.

Purpose

This study aims to measure the neutron capture cross section of 197Au on the back-n target station of China spallation neutron source (CSNS) by using Pulse height weighting technology, and verify the feasibility and data processing of this method.

Methods

First of all, detection efficiency of the detector, the pulse height weighting function of C6D6 and other basic terms under different target conditions were simulated by Geant4 Monte Carlo code, so that the weighted detector efficiency was proportional to the gamma energy. Then experimental measurement of neutron capture cross section of 197Au was carried out by the Au target calibration data in the experiment.

Results & Conclusions

The experimental results show that the measured neutron capture cross section data are consistent with the ENDF/B-VIII.0 evaluation data. Inconsistent size of the carbon target and the sample target, and the increase of the proton beam power will cause a large error in the background subtraction.

Key words: Neutron capture cross section, White light neutron source, Pulse height weighting techniques

CLC Number: 

  • TL99