New type of soliton in bi-ion plasmas and possible implications

Details New type of soliton in bi-ion plasmas and possible implications New type of soliton in bi-ion plasmas and possible implications

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3589s&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 18, p. 3589-3592

Physics

Plasma Physics

28

Electromagnetics: Nonlinear Electromagnetics, Radio Science: Waves In Plasma, Space Plasma Physics: Wave/Wave Interactions

Scientific paper

It is well known that the addition of a second ion population into a proton-electron plasma gives rise to new low-frequency wave modes. Here we investigate stationary structures streaming with sub-fast speed in such a bi-ion plasma. It is shown that a new type of stationary structure occurs as result of mode splitting effects caused by the second ion population. These so-called `oscillitons' are characterized by an oscillating spatial structure super-imposed on the spatial growth or decay associated with the usual single-ion solitons. Examples of the solution of the full non-linear equations describing stationary bi-ion flows are given which show that `oscillitons' may contribute to a better understanding of diverse low-frequency phenomena observed in the mass loaded plasma environments of Mars, Jupiter and comets.

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