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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(05) [May 2010] >
| Title: | Study of electromagnetic ion-cyclotron waves with general loss-cone distribution and multi-ions plasma-particle aspect approach |
| Authors: | Ahirwar, G
Varma, P
Tiwari, M S |
| Keywords: | Electromagnetic ion-cyclotron instability
Auroral acceleration region
Solar plasma
Loss-cone distribution function
Multi-component plasma
Particle aspect approach |
| Issue Date: | May-2010 |
| Publisher: | CSIR |
| Abstract: | Electromagnetic
ion-cyclotron (EMIC) waves with multi-component plasma have been studied by
single particle approach with general loss-cone distribution function at
different plasma densities. The dispersion relation and growth rate of the
electromagnetic ion-cyclotron waves with multi-component plasma have been
investigated. The effect of the steepness of the general distribution function
in a low  (ratio of plasma pressure to magnetic pressure) homogeneous plasma with different densities has been studied with
multi-ions plasma. The wave is assumed to propagate parallel to the static
magnetic field. The whole plasma is considered to consist of resonant and
non-resonant particles. It is assumed that resonant particles participate in
energy exchange with the wave, whereas non-resonant particles participate in
the oscillatory motion of the wave. The effect of general loss-cone
distribution function with varying plasma density is to enhance the wave growth
of EMIC waves with multi-ions plasma (H+, He+ and O+).
The loss-cone distribution acts as the source of free energy. The results are
interpreted for the space plasma parameters appropriate to the auroral
acceleration region of the earth’s magneto-plasma. |
| Page(s): | 334-342 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(05) [May 2010]
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