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PONDEROMOTIVE FORCE OF WHISTLER WAVES

Wang Yuan-dian   

  1. Institute of Space Physics, Academia Sinica
  • Received:1982-08-13 Revised:1900-01-01 Online:1983-08-24 Published:1983-08-24

Abstract: A formula of ponderomotive force of whistler waves has been derived in this paper.It shows that when the wave frequency ω<Ωe/2 (Ωe: the gyro-frequency of the electrons),the electrons intend to move into the region where the wave amplitude is larger.As a result,a density crest is formed along the propagation path of the wave.When ω>Ωe/2,the situation is just reversed,the ponderomotive force intends to sweep out the electrons from the region where the wave field is more intense,resulting in formation of a density through along the propagation path of the wave.Therefore,the Weibel's results are just the special case (ω<<Ωe) of the results presented here.