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Nonlocal effects on the drift cyclotron loss cone dispersion relation in cylindrical geometry (1987)

Ferraro, R. D. ; Littlejohn, R. G. ; Sanuki, H. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Physics of Fluids 30 (1987), S. 1115-1122

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ISSN: 1089-7666

Source: AIP Digital Archive

Topics: Physics

Notes: 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-β 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.866310

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