LogoLogo
  • Bio
  • Fyzika
  • V médiích
  • Fotografie
  • Výstavy
  • Kontakt

    Collisionless energy-independent kinetic equilibria in axisymmetric magnetized plasmas

    Zdeněk Stuchlík · Září 01, 2013 · Fyzika · 0 comments
    0

    Publication date: Sep 2013

    Abstract:
    The proof of existence of Vlasov-Maxwell equilibria which do not exhibit
    a functional dependence in terms of the single-particle energy is
    established. The theory deals with the kinetic treatment of multispecies
    axisymmetric magnetized plasmas, with particular reference to plasma
    systems which are slowly time varying. Aside from collisionless
    laboratory plasmas, the theory concerns important aspects of
    astrophysical scenarios, such as accretion-disk and coronal plasmas
    arising in the gravitational field of compact objects. Qualitative
    properties of the solution are investigated by making use of a
    perturbative kinetic theory. These concern the realization of the
    equilibrium kinetic distribution functions in terms of generalized
    Gaussian distributions and the constraints imposed by the Maxwell
    equations. These equilibria are shown to be generally non-neutral and
    characterized by the absence of the Debye screening effect. As a further
    application, the stability properties of these equilibria with respect
    to axisymmetric electromagnetic perturbations are addressed. This
    permits us to establish absolute stability criteria holding in such a
    case.

    Authors:
    Cremaschini, Claudio; Stuchlík, Zdeněk; Tessarotto, Massimo;

    http://adsabs.harvard.edu/abs/2013PhRvE..88c3105C

      Facebook   Pinterest   Twitter   Google+

    Leave a Comment! Zrušit odpověď na komentář

    You must be logged in to post a comment.
    Archivy
    Copyright © 2016 Zdeněk Stuchlík