Otro
Periodic compression of an adiabatic gas: Intermittency-enhanced Fermi acceleration
Registro en:
EPL, v. 103, n. 4, 2013.
0295-5075
1286-4854
10.1209/0295-5075/103/40003
WOS:000325967900003
2-s2.0-84884578122
Autor
Dettmann, Carl P.
Leonel, Edson D.
Resumen
A gas of non-interacting 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. © Copyright EPLA, 2013.