Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (2): 20201-020201.doi: 10.11889/j.0253-3219.2017.hjs.40.020201

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

Study of deposition behavior of deuterium in palladium using D-D nuclear reaction

HE Houjun, XU Xiaohui, LU Yongkai, ZOU Jianxin, WANG Qiang, GUAN Xingcai, ZHAO Jiangtao, WANG Tieshan   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2016-10-11 Revised:2016-12-23 Online:2017-02-10 Published:2017-01-24
  • Supported by:

    Supported by National Natural Science Foundation of China (No.11275085, No.11305080, No.11405079), Fundamental Research Funds for the Central Universities (No.lzujbky-2016-36), JSPS KAKENHI (No.19340051)

Abstract:

Background: Palladium is a very important hydrogen storage material with high hydrogen absorption capacity. It also plays an important role in the separation process of hydrogen isotopes. Purpose: The aim is to study the deposition behavior of deuterium ions in palladium. Methods: The dynamic and static concentration of deuterium in palladium was studied by means of D-D nuclear reaction induced by deuterium ion. These data were analyzed with a diffusion model. Results: The dynamic deuterium consists of free diffusing deuterium, unsteadily trapped deuterium and steadily trapped deuterium. The concentration of free diffusing deuterium and unsteadily trapped deuterium were increased with deuterium ion implantation, and then reached dynamic balance state when the deuterium was saturated, and would disappear quickly when the beam stopped. While the static deuterium concentration steadily trapped in defects were x=(0.42±0.03)%, due to defects caused by radiation damage reached saturation. Conclusion: The deposition behavior of hydrogen isotopes and its adsorption/desorption coefficient in Pd were closely related to the damage characteristics of materials and hydrogen isotope injection method.

Key words: Palladium foil, D-D nuclear reaction analysis, Deuterium concentration, Diffusion model

CLC Number: 

  • TL99