Open AccessA STUDY OF THE INFLUENCE OF A SURFACE BARRIER OF SOLIDS ON ION REFLECTION BY BIPARTITION MODEL
Author(s) -
Luo Zhengming
Publication year - 1990
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.39.2019
Subject(s) - reflection (computer programming) , ion , reflection coefficient , materials science , surface (topology) , atomic physics , rectangular potential barrier , fusion , optics , physics , optoelectronics , geometry , mathematics , computer science , programming language , linguistics , philosophy , quantum mechanics
It is very important to evaluate the reflection of low energy ion from a surface of solid for understanding the interaction between plasma and the first wall in a fusion reactor. When ion energy is lower than 1 keV, the influence of the surface barrier of solids on ion reflection gradually becomes important. In the present paper, the influence of the surface barrier of soids on ion reflection has been evaluated by extending the bipartition model for light ion transport to the case of the boundary with a rectangular surface barrier. Our computational results have shown that surface barrier can remarkably reduce the ion reflection coefficient, when ion energy decreases down to less than 10 times surface potential energy of the solids.