The electromagnetic effect on the critical ionization velocity process

Details The electromagnetic effect on the critical ionization velocity process The electromagnetic effect on the critical ionization velocity process

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....9311495m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Oct. 1, 1988, p. 11495-11506.

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20

Atmospheric Ionization, Critical Velocity, Electromagnetic Radiation, Gas Ionization, Comets, Frequency Response, Neutral Particles, Plasma Density, Plasma-Particle Interactions, Solar Wind

Scientific paper

Electromagnetic effects on the critical ionization velocity (CIV) process become important when the neutral gas velocity V(n) exceeds the local Alfven speed V(A). The electron heating due to unstable lower hybrid waves necessary for CIV still occurs, but the efficiency of the electron heating is significantly reduced when the electromagnetic effect comes into play. This is verified by a series of simulation runs using two-dimensional electromagnetic particle code combined with PANIC. The significance of the electromagnetic effects for the occurrence of CIV in the comet-solar wind interaction and other space phenomena is briefly discussed. It is found that the comet environment is marginal for the excitation of CIV.

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