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Chin. Phys. B, 2020, Vol. 29(6): 065205    DOI: 10.1088/1674-1056/ab8204

Determination of activation energy of ion-implanted deuterium release from W-Y2O3

Xue-Feng Wang(王雪峰)1,2, Ji-Liang Wu(吴吉良)2, Qiang Li(李强)2, Rui-Zhu Yang(杨蕊竹)2, Zhan-Lei Wang(王占雷)2, Chang-An Chen(陈长安)2, Chun-Rong Feng(冯春蓉)1,2, Yong-Chu Rao(饶咏初)2, Xiao-Hong Chen(谌晓洪)1, Xiao-Qiu Ye(叶小球)2
1 School of Sciences and Research Center for Advanced Computation, Xihua University, Chengdu 610039, China;
2 Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621907, China
Abstract  The retention and release of deuterium in W-2%Y2O3 composite materials and commercially pure tungsten after they have been implanted by deuterium plasma (flux ~3.71×1021 D/m2·s, energy ~25 eV, and fluence up to 1.3×1026 D/m2) are studied. The results show that the total amount of deuterium released from W-2%Y2O3 is 5.23×1020 D/m2(2.5 K/min), about 2.5 times higher than that from the pure tungsten. Thermal desorption spectra (TDS) at different heating rates (2.5 K/min-20 K/min) reveal that both W and W-2%Y2O3 have two main deuterium trapped sites. For the low temperature trap, the deuterium desorption activation energy is 0.85 eV (grain boundary) in W, while for high temperature trap, the desorption activation energy is 1.57 eV (vacancy) in W and 1.73 eV (vacancy) in W-2%Y2O3.
Keywords:  metals and alloys      plasma-based ion implantation      thermal desorption      diffusion in solid  
Received:  06 January 2020      Revised:  05 March 2020      Accepted manuscript online: 
PACS:  61.82.Bg (Metals and alloys)  
  52.77.Dq (Plasma-based ion implantation and deposition)  
  68.43.Vx (Thermal desorption)  
  66.30.-h (Diffusion in solids)  
Fund: Project supported by the National Magnetic Confinement Fusion Energy Research Project, Ministry of Science and Technology of China (Grant No. 2015GB109002), the Innovation Fund of Postgraduate, Xihua University, China (Grant No. ycjj2018017), and the National Natural Science Foundation of China (Grant No. 21401173).
Corresponding Authors:  Xiao-Hong Chen, Xiao-Qiu Ye     E-mail:;

Cite this article: 

Xue-Feng Wang(王雪峰), Ji-Liang Wu(吴吉良), Qiang Li(李强), Rui-Zhu Yang(杨蕊竹), Zhan-Lei Wang(王占雷), Chang-An Chen(陈长安), Chun-Rong Feng(冯春蓉), Yong-Chu Rao(饶咏初), Xiao-Hong Chen(谌晓洪), Xiao-Qiu Ye(叶小球) Determination of activation energy of ion-implanted deuterium release from W-Y2O3 2020 Chin. Phys. B 29 065205

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