Nonlocal effects on the drift cyclotron loss cone dispersion relation in cylindrical geometry

Journal Article · Wed Apr 01 04:00:00 EST 1987 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.866310· OSTI ID:6636912

Ferraro, R D; Littlejohn, R G; Sanuki, H; Fried, B D

In carrying out a nonlocal analysis of drift cyclotron loss cone (DCLC) modes in a cylindrically symmetric plasma, a new dispersion relation branch not described by local theories has been found. The model assumes a low-..beta.. plasma column with a Gaussian density profile in a uniform magnetic field. The exact k-space integral equation is solved using a Laguerre polynomial decomposition of the eigenfunctions. It is these new modes that couple with the diamagnetic drift wave to form unstable DCLC modes, a phenomenon not predicted by local theory. The existence of these modes requires a proper treatment of the spatial variation of the equilibrium distribution function describing the ions.

• Research Organization: Department of Physics, University of California, Los Angeles, California 90024
• OSTI ID: 6636912
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 30:4; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
CONFIGURATION
CYCLOTRON INSTABILITY
CYLINDRICAL CONFIGURATION
DIAMAGNETISM
DISPERSION RELATIONS
DRIFT INSTABILITY
ELECTRON DRIFT
EQUATIONS
FUNCTIONS
INSTABILITY
INTEGRAL EQUATIONS
LAGUERRE POLYNOMIALS
LOSS CONE INSTABILITY
LOW-BETA PLASMA
MAGNETISM
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
POLYNOMIALS