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arXiv · 1212.5482

Periodic compression of an adiabatic gas: Intermittency enhanced Fermi acceleration

Carl P. Dettmann·Edson D. Leonel
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Abstract

A gas of noninteracting particles diffuses in a lattice of pulsating scatterers. In the finite horizon case with bounded distance between collisions and strongly chaotic dynamics, the velocity growth (Fermi acceleration) is well described by a master equation, leading to an asymptotic universal non-Maxwellian velocity distribution scaling as v ~ t. The infinite horizon case has intermittent dynamics which enhances the acceleration, leading to v ~ t ln t and a non-universal distribution.

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Carl P. Dettmann, Edson D. Leonel. 2013-08-23. Periodic compression of an adiabatic gas: Intermittency enhanced Fermi acceleration. https://doi.org/10.1209/0295-5075%2F103%2F40003

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