Physics – Plasma Physics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10621165s&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue A10, p. 21165-21182
Physics
Plasma Physics
9
Magnetospheric Physics: Auroral Phenomena, Magnetospheric Physics: Plasma Waves And Instabilities, Space Plasma Physics: Numerical Simulation Studies
Scientific paper
We present here a systematic simulational study on electron beam driven waves and their consequences in terms of plasma electrodynamics. The study is performed by using three-dimensional particle-in-cell code, parallelized to simulate a large volume of plasma. Our simulation shows that an initial electron beam of finite radius with beam velocity along the ambient magnetic field triggers a series of events in the evolution of the waves and the plasma. In the initial stage (t<=200ωpo-1, ωpo being the electron plasma frequency with the total electron density no), high frequency waves near ω~ωpo are driven. These waves progressively disappear giving way to the dominance of lower hybrid (LH) waves. The phase of the lower hybrid waves lasts over the time interval 200≲tωpo≲1000. In this time period the LH waves stochastically accelerate ions transverse to
Lakhina Gurbax S.
Loo Sin M.
Singh Navinder
Wells Earl B.
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