@InProceedings{BarbosaAlveSimõ:2016:PISiTh,
author = "Barbosa, Marcos Vinicius Grala and Alves, Maria Virginia and
Sim{\~o}es J{\'u}nior, Fernando",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
de Pelotas (UFPel)}",
title = "PIC simulations of a three component plasma described by Kappa
distribution functions as observed in Saturn’s magnetosphere",
booktitle = "Abstracts...",
year = "2016",
organization = "European Geophysical Society General Assembly",
abstract = "In plasmas out of thermodynamic equilibrium the particle velocity
distribution can be described by the so called Kappa distribution.
These velocity distribution functions are a generalization of the
Maxwellian distribution. Since 1960, Kappa velocity distributions
were observed in several regions of interplanetary space and
astrophysical plasmas. Using KEMPO1 particle simulation code,
modified to introduce Kappa distribution functions as initial
conditions for particle velocities, the normal modes of
propagation were analyzed in a plasma containing two species of
electrons with different temperatures and densities and ions as a
third specie.This type of plasma is usually found in
magnetospheres such as in Saturn. Numerical solutions for the
dispersion relation for such a plasma predict the presence of an
electron-acoustic mode, besides the Langmuir and ion-acoustic
modes. In the presence of an ambient magnetic field, the
perpendicular propagation (Bernstein mode) also changes, as
compared to a Maxwellian plasma, due to the Kappa distribution
function. Here results for simulations with and without external
magnetic field are presented. The parameters for the initial
conditions in the simulations were obtained from the Cassini
spacecraft data. Simulation results are compared with numerical
solutions of the dispersion relation obtained in the literature
and they are in good agreement.",
conference-location = "Vienna, Austria",
conference-year = "17-22 Apr.",
language = "en",
ibi = "8JMKD3MGP3W34P/3LR5K48",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3LR5K48",
targetfile = "barbosa_pic.pdf",
urlaccessdate = "02 maio 2024"
}