On the Bernstein modes generation in solar post-flare loops

Details On the Bernstein modes generation in solar post-flare loops On the Bernstein modes generation in solar post-flare loops

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.346..301k&link_type=abstract

In ESA, Study of the Solar-Terrestrial System p 301-306 (SEE N93-31674 12-90)

Physics

Plasma Physics

Bernstein Energy Principle, Coronal Loops, Electric Fields, Magnetoactivity, Plasma Waves, Solar Flares, Astronomical Models, Electron Plasma, Landau Damping, Mathematical Models, Plasma Physics, Plasma Turbulence

Scientific paper

Large scale electric field in the solar coronal post flare loops can give rise to the electron Bernstein mode instability development in hot magnetoactive plasma. The case of long wavelength perturbations is studied, when Landau damping is substantially less than collision one. It is shown, in stationary scenario, when electrons do not pass into the 'runway' regime, instability development and Bernstein mode generation are possible at the frequency of second harmonic. For the second harmonic and the field values EB0 (initial for the beginning of instability), close to the value Ethetacr of critical Dreiser field, the time of instability development appears to be approximately 0.001 to 0.03 sec.

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