Electromagnetic Ion Beam with General loss-cone Distribution Function on EMIC waves in Multi-Ions Magnetospheric Plasma

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Electromagnetic Ion Beam with General loss-cone Distribution Function on EMIC waves in Multi-Ions Magnetospheric Plasma

G. Ahirwar

Author Affiliations

¹School of Studies in Physics, Vikram University, Ujjain-456010, MP, INDIA

Res. J. Recent Sci., Volume 2, Issue (5), Pages 34-38, May,2 (2013)

Abstract

Electromagnetic ion-cyclotron (EMIC) waves have been studied by single particle approach. The dispersion relation, growth rate of the electromagnetic ion-cyclotron waves in a low β (ratio of plasma pressure to magnetic pressure), homogeneous plasma have been obtained. The wave is assumed to propagate parallel to the static magnetic field. The effect of general loss-cone distribution function on EMIC waves is to enhance the growth rate. The results are interpreted for the Saturn magnetosphere has been applied to the magnetosphere Saturn to the observations made by Cassini parameters appropriate to the magneto-plasma.

References

Temerin M. and Lysak R.L., Electromagnetic ion cyclotron (ELF) waves generated by auroral electron precipitation, J. Geophys. Res., 89, 2849 (1984)
Gustafsson G., Andre M., Matson L. and Koskinen H., On waves below the local proton gyrofrequency in auroral acceleration region, J. Geophys. Res., 95, 5889 (1990)
Vaivads A., Andre M., Norqvist P., Oscarsson T., Ronnmark K., Blomberg L., Clemmons J.H. and Santolik O., Energy transport during O+ energization by ELF waves observed by the Freja satellite, J. Geophys. Res., 104, 2563 (1999)
Gurnett D.A., Scarf F.L., Kurth W.S., Shaw R.R. and Poynter R.L., Determination of Jupiter's electron density profile from plasma wave observations, J. Geophys. Res.,86, 8199 (1981)
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Dawson J., On landau Damping, Phys. Fluids,, 869 (1961)
Ahirwar G., Varma P. and Tiwari M. S., Beam effect on EMIC waves in presence of parallel electric field with different plasma densities by particle aspect approach, Ind. J. of Pure& Appl. Phys., 49, 385 (2011)
Singhal R.P. and Tripathi A.K., Study of whistler mode instability in Saturn's magnetosphere, Annales Geophysicae, 24, 1705 (2006)

[ref1] Temerin M. and Lysak R.L., Electromagnetic ion cyclotron (ELF) waves generated by auroral electron precipitation, J. Geophys. Res., 89, 2849 (1984)

[ref2] Gustafsson G., Andre M., Matson L. and Koskinen H., On waves below the local proton gyrofrequency in auroral acceleration region, J. Geophys. Res., 95, 5889 (1990)

[ref3] Vaivads A., Andre M., Norqvist P., Oscarsson T., Ronnmark K., Blomberg L., Clemmons J.H. and Santolik O., Energy transport during O+ energization by ELF waves observed by the Freja satellite, J. Geophys. Res., 104, 2563 (1999)

[ref4] Gurnett D.A., Scarf F.L., Kurth W.S., Shaw R.R. and Poynter R.L., Determination of Jupiter's electron density profile from plasma wave observations, J. Geophys. Res.,86, 8199 (1981)

[ref5] Gurnett D.A., Kurth W. S., et. al., Radio and plasma wave observations at Saturn from Cassini’s approach and first orbit, Science, 307, 1255 (2005)

[ref6] Dawson J., On landau Damping, Phys. Fluids,, 869 (1961)

[ref7] Ahirwar G., Varma P. and Tiwari M. S., Beam effect on EMIC waves in presence of parallel electric field with different plasma densities by particle aspect approach, Ind. J. of Pure& Appl. Phys., 49, 385 (2011)

[ref8] Singhal R.P. and Tripathi A.K., Study of whistler mode instability in Saturn's magnetosphere, Annales Geophysicae, 24, 1705 (2006)