Notes on diffusion in collisionless medium

Details Notes on diffusion in collisionless medium Notes on diffusion in collisionless medium

2005-03-09

arxiv.org/abs/nlin/0503017v1

Regular and Chaotic Dynamics, 2004 Volume 9 Number 1

Nonlinear Sciences

Chaotic Dynamics

6 pages

Scientific paper

A collisionless continuous medium in Euclidean space is discussed, i.e. a continuum of free particles moving inertially, without interacting with each other. It is shown that the distribution density of such medium is weakly converging to zero as time increases indefinitely. In the case of Maxwell's velocity distribution of particles, this density satisfies the well-known diffusion equation, the diffusion coefficient increasing linearly with time.

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