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

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3463433· OSTI ID:21432237

Chibisov, D V; Mikhailenko, V S; Stepanov, K N ^[1]

---

1. Kharkov National University, 61108 Kharkov (Ukraine)

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.

• OSTI ID: 21432237
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 17; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related 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