Periodic compression of an adiabatic gas: Intermittency enhanced Fermi acceleration
Chaotic Dynamics
2017-06-29 v2 Mathematical Physics
math.MP
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.
Keywords
Cite
@article{arxiv.1212.5482,
title = {Periodic compression of an adiabatic gas: Intermittency enhanced Fermi acceleration},
author = {Carl P. Dettmann and Edson D. Leonel},
journal= {arXiv preprint arXiv:1212.5482},
year = {2017}
}
Comments
6 pages, 4 figures, to appear in EPL (http://epljournal.edpsciences.org/)