VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Kinetic theory and simulations of moderately strong stationary double layers with warm ions [Elektronski vir]
    Jelić, Nikola ...
    In this paper we present results obtained via kinetic theory and simulation on double layer structures (DLs) joining separating two non-isothermal plasmas with different ion and electron temperatures ... and densities such that DL's potential barrier strengths range from rather low to infinite (in comparison to particle thermal energies) in either of plasmas. This strongly non-linear problem, which consists of solving the so-called force balance equation subject to four boundary conditions (quasineutralities and generalized Bohm criteria), has been already solved self-consistently in fluid approach resulting in a modified form of Langmuir criterion, which however, suffers of a singularity for moderately strong double layers. In addition, boundary conditions have been imposed as free parameters of the problem instead of being calculated self-consistently, as done, e.g., in Ref. 3, for particular ionization rate distributions (proportional to electron density). For possible taking the same approach as in Ref. 3, i.e., to obtain a controllable DL with inhomogeneous ionization distributions, as an integral part of the discharge, and finding the double layer conditions (instead of imposing them in advance), here we obtain enough experimental observations and compile data from kinetic simulations, performed with our branch of a 1D PIC PTSG code. Thus the only free parameters that remain in maintaining a DL with desired strenght, are only those which all are contained within the ion-source term distribution, i.e., the external discharge parameters to be controlled by an experimentalist.
    Vir: Plasma Science (ICOPS), 2013 Abstracts IEEE International Conference on Date 16-21 June 2013, San Francisco,California, USA [Elektronski vir] (2013, f. 1)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 13236251
    DOI

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