Open AccessUnbiased solid surface charging research inplasma environment
Author(s) -
Cao He-Fei,
Shanghe Liu,
Ye Sun,
Qingyun Yuan
Publication year - 2013
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.62.119401
Subject(s) - spacecraft , plasma , electron , solid surface , ion , spacecraft charging , materials science , surface (topology) , mechanics , space environment , distribution function , computational physics , atomic physics , physics , aerospace engineering , chemical physics , thermodynamics , quantum mechanics , geometry , mathematics , astronomy , geophysics , engineering
Within the plasma environment of spacecraft, the interaction between electrons and ions may cause surface charging and discharging and may degrade the performance of spacecraft. The charging potential is a key factor for discharging process. By considering the comprehensive effects of particle mass, temperature, density of plasma, secondary electrons and the velocity of unbiased solid, a general equation of surface charging potential of unbiased solid has been derived using Maxwell velocity distribution function. The expressions under some special and general conditions have been also analyzed. The surface charging and discharging properties are summarized under different plasma environment and motion states of unbiased solid.