Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (1): 10201-010201.doi: 10.11889/j.0253-3219.2017.hjs.40.010201

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Calculation on the associated particle method for 90° to measure the neutron yield correction factors of D-D neutron generator

LI Jianyi1, WANG Junrun1,2, ZHANG Yu1,2, HUANG Zhiwu1, LU Xiaolong1,2, XU Dapeng1,2, ZHANG Jie1, WEI Zheng1,2, MA Zhanwen1, YAO Zeen1,2   

  1. 1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
    2 Engineering Research Center for Neutron Application, Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2016-09-29 Revised:2016-11-16 Online:2017-01-10 Published:2017-01-11
  • Supported by:

    Supported by National Natural Science Foundation of China (No.11375077), National Key Scientific Instrument and Equipment Development Project (No.2013YQ40861), Fundamental Research Funds for the Central Universities (No.lzujbky-2016-bt08)

Abstract:

Background: In recent years, the neutron generator based on D-D reaction is widely investigated due to some potential applications and the advantage of the more security without the use of radioactive tritium target and long target lifetime with D ion self-injection effect in target. The accurate measurement of fast neutron yield of the D-D neutron generator is a key problem to be solved. For D-D neutron generator, the associated particle method is possibly one of the most accurate ways for the neutron source strength calibration. Purpose: In order to measure the neutron yield of D-D neutron generator using the associated particle method, the anisotropy correction factor and the yield ratio of neutron and proton need to be calculated. Methods: A method for calculating the anisotropy correction factor and the yield ratio and a computer program based on MATLAB software platform were developed. Results: In this work, the anisotropy correction factors, the yield ratio of neutron and proton and the total correction factors were presented for the thick-target and for 90° associated particle measurement in the deuterons energy region of 20-700keV. Conclusion: The uncertainty of the total correction factors (RY) comes mainly from the cross section data. The uncertainty of RY is estimated to be about 2%.

Key words: Associated particle method, D-D neutron yield, Neutron generator, Correction factors

CLC Number: 

  • O57