Negative Diffusion of Perpendicular Ion Energy in a Magnetized Plasma due to Mode-Coupling Process

1979 ◽  
Vol 42 (12) ◽  
pp. 762-766 ◽  
Author(s):  
Mitsuhiro Shigeta ◽  
Toshio Tange ◽  
Kyoji Nishikawa
Keyword(s):  
Mode Coupling ◽  
Magnetized Plasma ◽  
Ion Energy ◽  
Coupling Process ◽  
Negative Diffusion

scholarly journals Beat Hamiltonians and generalized ponderomotive forces in hot magnetized plasma

1978 ◽  
Vol 20 (3) ◽  
pp. 365-390 ◽  
Author(s):  
Shayne Johnston ◽  
Allan N. Kaufman ◽  
George L. Johnston
Keyword(s):  
Canonical Transformation ◽  
Mode Coupling ◽  
Scalar Potential ◽  
Potential Method ◽  
Magnetized Plasma ◽  
First Order ◽  
Interaction Terms ◽  
Novel Approach ◽  
Ponderomotive Forces ◽  
Nonlinear Mode Coupling

A novel approach to the theory of nonlinear mode coupling in hot magnetized plasma is presented. The formulation retains the conceptual simplicity of the familiar ponderomotive-scalar-potential method, but removes the approximations. The essence of the approach is a canonical transformation of the single-particle Hamiltonian, designed to eliminate those interaction terms which are linear in the fields. The new entity (the ‘oscillation centre’) then has no first-order uttering motion, and generalized ponderomotive forces appear as nonlinear terms in the transformed Hamiltonian. This viewpoint is applied to derive a compact symmetric formula for the general three-wave coupling coefficient in hot uniform magnetized plasma, and to extend the conventional ponderomotive-scalar-potential method to the domain of strongly magnetized plasma.

Ion energy spectra analyzers for magnetized plasma

1999 ◽  
Vol 70 (10) ◽  
pp. 3930-3933 ◽  
Author(s):  
I. N. Churkin ◽  
V. I. Volosov ◽  
A. G. Steshov
Keyword(s):  
Magnetized Plasma ◽  
Energy Spectra ◽  
Ion Energy

Pseudo-three-dimensional convective cell motion in a magnetized plasma

1984 ◽  
Vol 31 (2) ◽  
pp. 231-238 ◽  
Author(s):  
P. K. Shukla ◽  
M. Y. Yu
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Mode Coupling ◽  
Three Dimensional ◽  
Convective Cell ◽  
Magnetized Plasma ◽  
Space Plasmas ◽  
Linear And Nonlinear ◽  
Convective Cells ◽  
Cell Motion

Linear and nonlinear mechanisms for generating convective cells with finite but small parallel (to the external magnetic field B0) wavelength are presented. The problems of mode-coupling as well as quasi-steady nonlinear mode structures are analytically studied. Possible applications in space plasmas are discussed.

Dynamics of kink instability in a non-uniform magnetoplasma

1987 ◽  
Vol 38 (2) ◽  
pp. 309-316 ◽  
Author(s):  
R. Bharuthram ◽  
P. K. Shukla
Keyword(s):  
Growth Rate ◽  
Dispersion Relation ◽  
Stationary Solution ◽  
Mode Coupling ◽  
Magnetized Plasma ◽  
Linear Regime ◽  
Electron Current ◽  
Coupling Equations ◽  
Kink Instability ◽  
Nonlinear Fluid

Accounting for an external electron current gradient, a set of nonlinear fluid equations governing the dynamics of kink instability in an inhomogeneous magnetized plasma has been derived. In the linear regime, the dispersion relation is analysed and the variation of the growth rate is graphically shown. In the nonlinear regime, it is shown that a quasi-stationary solution of the mode coupling equations can be represented as a dipolar vortex. Conditions under which the latter arises are given.

An experimental study of the ion energy balance of a magnetized plasma

1981 ◽  
Vol 23 (1) ◽  
pp. 67-79 ◽  
Author(s):  
B F M Pots ◽  
P Van Hooff ◽  
D C Schram ◽  
B Van Der Sijde
Keyword(s):  
Experimental Study ◽  
Energy Balance ◽  
Magnetized Plasma ◽  
Ion Energy
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