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Direct conversion of ordinary mode into upper hybrid wave by density irregularities in the ionosphere
Author(s) -
Antani S. N.,
Rao N. N.,
Kaup D. J.
Publication year - 1991
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/91gl02629
Subject(s) - ionosphere , amplitude , physics , computational physics , mode (computer interface) , spectral density , scaling , electric field , excited state , electron density , geophysics , optics , electron , atomic physics , telecommunications , mathematics , computer science , geometry , quantum mechanics , operating system
We investigate direct conversion of ordinary mode into upper hybrid (UH) waves by pre‐existing electron density irregularities during ionospheric heating. The electric field amplitude and the average power absorbed by the excited UH waves are calculated when the irregularity distribution is (i) coherent, and (ii) incoherent with a broad band power spectrum modelled by a drift wave type scaling. For the typical parameters of the experiments, we find that the direct conversion process can be quite efficient.