Periodic compression of an adiabatic gas: Intermittency-enhanced Fermi acceleration

Carl P. Dettmann*, Edson D. Leonel

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

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.
Original languageEnglish
Article number40003
Number of pages6
JournalEPL
Volume103
Issue number4
DOIs
Publication statusPublished - Aug 2013

Keywords

  • LORENTZ GAS
  • PARTICLES
  • DIFFUSION
  • TRANSPORT
  • ESCAPE
  • nlin.CD
  • math-ph
  • math.MP

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