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Transverse acceleration of ions in cusp: Electrostatic ion-cyclotron instability with general loss-cone distribution as a possible source

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Title Transverse acceleration of ions in cusp: Electrostatic ion-cyclotron instability with general loss-cone distribution as a possible source
 
Creator Mishra, Ruchi
Varma, P
Tiwari, M S
 
Subject Transverse acceleration of ions
Cusp region
Electrostatic ion-cyclotron instability
Wave-particle interaction
 
Description 471-476
Expressions for the dispersion relation, transverse and parallel energy of the resonant ions and growth rate of the Electrostatic Ion-Cyclotron Instability (EICI) are derived in the presence of the general loss-cone distribution function. The results are interpreted for the space plasma parameters appropriate to the auroral acceleration region. The results of the present study have shown that in the presence of the general loss-cone distribution the growth rate of the EICI enhances at lower perpendicular perturbations. The frequency of the EICI obtained is in accordance with the reported values. In the presence of the loss-cone distribution function, the transverse energy of resonant ions is also enhanced which may then give rise to the observed transverse acceleration of ions in the cusp region.
 
Date 2008-08-26T09:32:52Z
2008-08-26T09:32:52Z
2008-07
 
Type Article
 
Identifier 0019-5596
http://hdl.handle.net/123456789/1890
 
Language en_US
 
Publisher CSIR
 
Source IJPAP Vol.46(7) [July 2008]