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  • In-flight dissipation as a mechanism to suppress Fermi acceleration
    Oliveira, Diego Fregolente Mendes de ; Robnik, Marko, 1954-
    Some dynamical properties of time-dependent driven elliptical-shaped billiards are studied. It was shown that for conservative time-dependent dynamics the model exhibits Fermi acceleration [Phys. ... Rev. Lett. 100, 014103 (2008).] On the other hand, it was observed that damping coefficients upon collisions suppress such a phenomenon [Phys. Rev. Lett. 104, 224101 (2010)]. Here, we consider a dissipative model under the presence of in-flight dissipation due to a drag force which is assumed to be proportional to the square of the velocity of the particle. Our results reinforce that dissipation leads to a phase transition from unlimited to limited energy growth. The behavior of the average velocity is described using scaling arguments.
    Source: Physical review. E, Statistical, nonlinear, and soft matter physics. - ISSN 1539-3755 (Vol. 83, issue 2, 2011, str. 026202-1 - 026202-5)
    Type of material - article, component part
    Publish date - 2011
    Language - english
    COBISS.SI-ID - 66907905
    DOI

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