Open AccessThermal release of helium in materials inducedby random-walk mechanism
Author(s) -
Li Ren-Shun,
Yulu Zhou,
Baoling Zhang,
Anguo Deng,
Qing Hou
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.046604
Subject(s) - helium , random walk , thermal desorption , materials science , thermal , diffusion , absorption (acoustics) , isotopes of helium , thermodynamics , desorption , atomic physics , chemical physics , physics , chemistry , composite material , adsorption , statistics , mathematics
Based on the theory for random-walk with an absorption wall, the characteristics of thermal release of helium in materials are studied. The influences of the initial depth distribution and the diffusion coefficient of helium in materials on the thermal release are investigated. A comparison is made between the thermal releases induced by the random-walk mechanisms and the thermal desorption mechanisms. It is pointed out that the initial depth distribution and the states that Helium atoms stay in are required for the correct understanding of experimental observations of thermal releases of helium in materials.