Journal of Astronomy and Space Sciences
- Volume 11 Issue 2
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- Pages.250-272
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- 1994
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- 2093-5587(pISSN)
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- 2093-1409(eISSN)
THEORY AND SIMULATION OF BROADBAND ELECTROSTATIC NOISE IN THE MAGNETOTAIL
Abstract
Various plasma instabilities driven by the ion beams have been proposed in order to explain the broadband electrostatic noise (BEN) in the earth's geomagnetic tail. Ion acoustic, ion-ion two stream, and electron acoustic instabilities have been proposed. Here we consider a theoretical investigation of the generation of BEN by cold streaming ion beams in the earth's magnetotail. Linear theory analysis and particle simulation studies for the plasma sheet, which consists of warm electrons and ions as well as cold streaming ion beams, have been done. Both beam-ion acoustic and ion-ion two stream instabilities easily occur when the beam and warm electron temperature ratio,
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