Nonlocal effects on the convective properties of the electrostatic current-driven ion-cyclotron instability

Journal Article · Wed Aug 01 00:00:00 EDT 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864860· OSTI ID:6565631

Ganguli, G; Bakshi, P; Palmadesso, P

Nonlocal effects due to magnetic shear and finite current channel width on the convective characteristics of the current-driven ion-cyclotron instability have been investigated. When the magnetic shear length (L/sub s/) is smaller than the current channel width (L/sub c/), the group velocity parallel to the external magnetic field at the origin (V/sub g/z) vanishes, and there is a reduction in the group velocity perpendicular to the external magnetic field (V/sub g/y). For L/sub c/approx.10/sup -2/ L/sub s/ the values of V/sub g/z and V/sub g/y as given by local theory are recovered. When L/sub c/< or approx. =rho/sub i/, where rho/sub i/ is the mean ion Larmor radius, both V/sub g/z and V/sub g/y change sign, indicating a reversal of the direction of propagation.

• Research Organization: Science Applications, Inc., McLean, Virginia 22102
• OSTI ID: 6565631
• Journal Information: Phys. Fluids; (United States), Vol. 27:8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
CYCLOTRON INSTABILITY
CONVECTION
ELECTROSTATICS
IONS
LARMOR RADIUS
MAGNETIC FIELDS
CHARGED PARTICLES
INSTABILITY
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
700107* - Fusion Energy- Plasma Research- Instabilities