Back to List Page

Japanese

Ion beam instabilities in space plasmas

Researchers Yoshiharu Omura and Koichi Shin (Research Institute for Sustainable Humanosphere, Kyoto University)
Name of Database Ion beam instabilities in space plasmas
Institution Research Institute for Sustainable Humanosphere, Kyoto University
Contents

The database contains simulation runs of ion beam instabilities typically found in space plasmas. These instabilities play important roles in the energy transfer and dissipation in space plasmas. Nonlinear evolutions of these instabilities are reproduced by one-dimensional electromagnetic particle simulation with periodic boundaries.

・EMIC R-mode instability driven by an ion beam

・EMIC L-mode instability driven by a temperature anisotropy

・EMIC L-mode instability with heavily ions

・Ion Bernstein instability

・Ion acoustic instability

All computations were performed on the KEMPO1/MATLAB software.
Examples The database includes several kinds of plots showing detailed processes of nonlinear evolution of ion beam instability. The left upper and right upper panels are scatter plots of the particles in the velocity of phase space X-Vx and X-Vy, respectively. The left bottom panel is velocity distribution function f (Vx). The right bottom panel is scatter plot of particles in the 3 dimensional phase space Vx-Vy-Vz.

The simulation code used in producing the present database is a one-dimensional electromagnetic code.

Detailed description of the code is found in the following reference.

Y. Omura and H. Matsumoto, KEMPO1: Technical Guide to One-Dimensional Electromagnetic Particle Code, Computer Space Plasma Physics: Simulation Techniques and Softwares, edited by H. Matsumoto and Y. Omura, pages 21-65, Terra Scientific, Tokyo, 1993.

http://www.terrapub.co.jp/e-library/cspp/index.html



Contact Yoshiharu Omura
RISH, Kyoto University
Gokasho, Uji, 611-0011, Japan
TEL: +81-774-38-3811
omura[AT]rish.kyoto-u.ac.jp
Public Offering of Database

CAWSES & S-RAMP CD/DVD-ROM SM0014