Ion beam instabilities in space plasmas

1. Name of Database:   Ion beam instabilities in space plasmas

2. Institution:　 Research Institute for Sustainable Humanosphere, Kyoto University

3. Contents of Database: 　

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.

4. Examples of Database:

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

5. Contact:

　Yoshiharu Omura
　RISH, Kyoto University, 
　Gokasho, Uji, 611-0011, Japan
　Phone:  +81-774-38-3811
　E-mail:  omura[AT]rish.kyoto-u.ac.jp

6. Public Offering of Database:

CAWSES SPACE-W Databese List.

CAWSES SPACE-W Home Page.