Electron beam instability as generation mechanism of electrostatic solitary waves in the magnetotail
Y. Omura, H. Matsumoto, T. Miyake, and H. Kojima
Radio Atmospheric Science Center, Kyoto University, Kyoto, Japan
(Journal of Geophysical Research, 101, 2685-2697, 1996)
Run 1 : R = 0.5, Vd1 = 0.0, Vd2 = 20.0, Vt1 = 1.0, Vt2 = 1.0, Vti = 2.0 Run 2 : R = 0.5, Vd1 = 0.1, Vd2 = 20.0, Vt1 = 1.0, Vt2 = 1.0, Vti = 0.1 Run 3 : R = 0.5, Vd1 = -10.0, Vd2 = 10.0, Vt1 = 1.0, Vt2 = 1.0, Vti = 2.0 Run 4 : R = 0.05, Vd1 = 0.0, Vd2 = 20.0, Vt1 = 1.0, Vt2 = 1.0, Vti = 0.1 Run 5 : R = 0.05, Vd1 = 0.0, Vd2 = 20.0, Vt1 = 10.0, Vt2 = 1.0, Vti = 0.1 Run 6 : R = 0.5, Vd1 = 0.0, Vd2 = 20.0, Vt1 = 6.0, Vt2 = 6.0, Vti = 0.1
(R : density ratio; Vd1, Vd2 : drift velocities of electron beams; Vt1 ,Vt2 , Vti : thermal velocities of the electron and ion beams)
Common Parameters for All Runs
| Grid spacing |
d x = 1 |
|
Time step |
d t = 0.025 |
|
Number of grid points |
N x = 1024 |
|
Total electron plasma frequency |
f e = 1.0 / 6.28 |
|
Mass ratio |
M i/Me= 100 |
|
Drift velocity of ions |
V di = 0.0 |