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Title:		One-dimensional motion of collisionless particles in gasdynamic approximation
Authors:		ZELDOVICH, IA. B.
Affiliation:		AA(Akademiia Nauk SSSR, Institut Prikladnoi Matematiki, Moscow, USSR)
Journal:		Physics of Fluids, vol. 22, Jan. 1979, p. 103, 104.
Publication Date:		01/1979
Category:		Plasma Physics
Origin:		STI
NASA/STI Keywords:		COLLISIONLESS PLASMAS, GAS DYNAMICS, MATHEMATICAL MODELS, PARTICLE MOTION, PLASMA DYNAMICS, DISTRIBUTION FUNCTIONS, GALACTIC EVOLUTION, PLASMA PHYSICS
Bibliographic Code:		1979PhFl...22..103Z

Abstract

It is shown that one-dimensional collisionless degenerate motion of particles in a plasma coincides exactly with gas-dynamical motion before the occurrence of caustics. Gravitational or electric forces do not destroy this coincidence for any set of particles with definite mass and charge. These forces make the self-consistent solution more complicated due to potential calculations but the gas-dynamical part remains the same. One application of the proposed method is the theory of galaxy formation.

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