Open AccessBohm criterion for a collisinal electronegative plasma sheath in an oblique magnetic field
Author(s) -
Minghui Qiu,
Huiping Liu,
Zou Xiu
Publication year - 2012
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.61.155204
Subject(s) - magnetic field , plasma , ion , physics , debye sheath , mach number , oblique case , range (aeronautics) , atomic physics , mechanics , materials science , nuclear physics , quantum mechanics , linguistics , philosophy , composite material
The Bohm criterion for a collisinal electronegative plasma sheath in an oblique magnetic field is investigated with a fluid model. The effects of negative ions and magnetic field on the Bohm criterion are discussed. It is shown that the parameters of the negative ions affect only the lower limit for Bohm criterion, and the external magnetic field can affect the whole range of the ion Mach number values.