Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (8): 80201-080201.doi: 10.11889/j.0253-3219.2018.hjs.41.080201

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

Impact of the target materials on neutron output and sputtering yield of the neutron tube

NIAN Ruixue, JING Shiwei   

  1. School of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2018-03-16 Revised:2018-05-25 Online:2018-08-10 Published:2018-08-15
  • Supported by:

    Supported by National Natural Science Foundation of China (No.11275046)

Abstract:

[Background] The neutron yield and lifetime of the neutron tube are affected by the performance of the target. The study of the characteristics of the target materials has far-reaching significance for improving the performance of the neutron tube.[Purpose] This study aims to get the effect of alloy target material on neutron yield and lifetime of neutron tube.[Methods] The neutron yield of titanium targets under different beams and accelerating high voltage conditions is simulated by SRIM 2008 and compared with the results of 3He neutron monitor. The experimental and simulation results are in good agreement. The neutron output and sputtering yield at different deuterium energies and different alloy targets are calculated. The alloy targets include titanium alloys containing scandium, molybdenum and niobium with different atom ratios.[Results] The results show that the neutron yield of titanium alloys containing scandium as target materials in the incident ion energy 120 keV and the alloy ratio of 0.2 is the highest, and the simulated value can reach 1.24×109 s-1. The sputtering yield of metal atom and tritium atom is lower which the alloy ratio of titanium alloys containing scandium is 0.6. Compared with the titanium alloys containing molybdenum and niobium, the one containing scandium has higher neutron yield, and lower sputtering yield.[Conclusion] This work is the basis for the research of alloy target materials. Titanium alloy containing scandium is a potential material for the preparation of a high-yield and long-lived neutron tube in the future.

Key words: Neutron tube, SRIM, Alloy target, Neutron output, Sputtering yield

CLC Number: 

  • O571