Physics – Plasma Physics
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008adspr..42..979g&link_type=abstract
Advances in Space Research, Volume 42, Issue 5, p. 979-986.
Physics
Plasma Physics
2
Scientific paper
Modulation of whistler waves in a plasma with time-dependant magnetic field perturbations was investigated experimentally. The experiments were performed on large “Krot” device, which was specially designed to study space plasma physics phenomena. It is shown that magnetic field variations on the wave propagation path can lead to splitting of initially continuous whistler wave into the sequence of bursts, whose repetition rate corresponds to magnetic field perturbation period. The frequency inside each burst is changing from its front edge to the back edge. Relative shift of the wave frequency can be as large as the relative magnetic disturbance. Distortion of whistler wave frequency spectrum after its passing through magnetically disturbed areas can be used as a diagnostics for low-frequency magnetic field variations. The applicability of our laboratory results to space plasma is discussed.
Gushchin Mikhail E.
Korobkov Sergey V.
Kostrov Alexander V.
Starodubtsev Mikhail V.
Strikovsky Askold V.
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