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Excitation and trapping of lower hybrid waves in striations

Research output: Contribution to journalJournal article

Published

???articleNumber???122901
Journal publication date3/12/2008
JournalPhysics of Plasmas
Journal number12
Volume15
Number of pages11
Original languageEnglish

Abstract

The theory of lower hybrid (LH) waves trapped in striations in warm ionospheric plasma in the three-dimensional case is presented. A specific mechanism of trapping associated with the linear transformation of waves is discussed. It is shown analytically that such trapping can take place in elongated plasma depletions with the frequencies below and above the lower hybrid resonance frequency of the ambient plasma. The theory is applied mainly to striations generated artificially in ionospheric modification experiments and partly to natural plasma depletions in the auroral upper ionosphere. Typical amplitudes and transverse scales of the trapped LH waves excited in ionospheric modification experiments are estimated. It is shown that such waves possibly can be detected by backscattering at oblique sounding in very high frequency (VHF) and ultra high frequency (UHF) ranges.

Bibliographic note

Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Phys. Plasmas 15, 122901 (2008); http://dx.doi.org/10.1063/1.3035910 (11 pages) Excitation and trapping of lower hybrid waves in striations N. Borisov and F. Honary1 and may be found at http://pop.aip.org/resource/1/phpaen/v15/i12/p122901_s1?isAuthorized=no