Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (5): 106 doi: 10.1007/s41365-016-0115-5

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The effects of hydrogen on the helium behavior in palladium

Chang-Ning Peng   

  1. Electrical Engineering College, Longdong University, Qingyang 745000, China
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    This work was supported by the National Natural Science Foundation of China (No. 11304324).

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Chang-Ning Peng. The effects of hydrogen on the helium behavior in palladium.Nuclear Science and Techniques, 2016, 27(5): 106     doi: 10.1007/s41365-016-0115-5


As one candidate of tritium storage materials, palladium subjects to the damage from helium atoms introduced by the b-decay of tritium atoms. The mechanical properties of palladium will be greatly degraded deriving from the accumulation of helium atoms. A set of interatomic potentials has been fitted based on ab initio calculation according to the Morse formula. Molecular dynamic methods are utilized to investigate the existence of H atoms on the release of helium atoms from palladium with the present fitted potentials. It is found that hydrogen atoms play significant roles in the diffusion and release of helium atoms. The presence of hydrogen atoms tends to obstacle the diffusion and release of helium atoms in palladium.

Key words: Molecular dynamics, Tritium storage materials, Ab initio calculation, Interatomic potentials, Palladium, b-Decay