Parametric effects in inhomogeneous plasma during injection of electron pulses into the ionosphere

Details Parametric effects in inhomogeneous plasma during injection of electron pulses into the ionosphere Parametric effects in inhomogeneous plasma during injection of electron pulses into the ionosphere

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ge%26ae..49..471i&link_type=abstract

Geomagnetism and Aeronomy, Volume 49, Issue 4, pp.471-475

Computer Science

Sound

94.20.Tt, 94.20.Wf, Ionospheric Soundings, Active Experiments, Plasma Waves And Instabilities

Scientific paper

The injection of electron pulses from the rocket into the ionospheric plasma in the lower hemisphere relative to the initial pitch angles of electrons during the substorm recovery phase provoked the generation of parametric processes (the ARAKS experiment). The electron flux observations, obtained using a wide-angle detector, and the whistler wave emission intensity measurements were compared. A wide-angle detector of electrons was mounted on the rocket, and a broadband wave receiver was installed on a nasal cone separated from the rocket. Bursts of the electron flux and wave emission were observed in pauses between electron pulses. It has been indicated that a clearly defined anisotropy of the observed parametric effects of the pitch angle of injected electron pulses is related to resonance characteristics of a wave emitted by electron fluxes in a magnetized plasma. Precipitation of ring current electrons was caused by a change in the magnetic moment of electrons, trapped by the magnetosphere, in the region of magnetic mirror points in the fields of electrostatic oscillations excited during decay of whistlers.

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