Current-driven ion cyclotron instability of multicomponent field-aligned sheared flow

The effect of velocity shear of the magnetic field-aligned plasma flow on excitation of the current-driven electrostatic oxygen ion cyclotron instability in the presence of hydrogen ions is considered by using kinetic formalism. It is shown that an increase of velocity shear as well as relative conc...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2010-08, Vol.17 (8), p.082903-082903-6
Main Authors: Chibisov, D. V., Mikhailenko, V. S., Stepanov, K. N.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED PARTICLES
CYCLOTRON INSTABILITY
HYDROGEN IONS
INSTABILITY
INSTABILITY GROWTH RATES
IONS
OXYGEN IONS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SHEAR
VELOCITY
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of velocity shear of the magnetic field-aligned plasma flow on excitation of the current-driven electrostatic oxygen ion cyclotron instability in the presence of hydrogen ions is considered by using kinetic formalism. It is shown that an increase of velocity shear as well as relative concentration of oxygen ions lead to a decrease of the instability threshold. The influence of the relative concentration of oxygen ions and velocity shear on the growth rate is investigated. For a weak velocity shear the growth rate decreases with reducing of the oxygen concentration, however for a strong shear the growth rate due to the presence of hydrogen ions may increase.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.3463433