ENHANCEMENT OF STIMULATED ELECTROMAGNETIC EMISSION DURING 2 FREQUENCYIONOSPHERIC HEATING EXPERIMENTS

Authors
BERNHARDT PA WAGNER LS GOLDSTEIN JA TRAKHTENGERTS VY ERMAKOVA EN RAPOPORT VO KOMRAKOV GP BABICHENKO AM
Citation
Pa. Bernhardt et al., ENHANCEMENT OF STIMULATED ELECTROMAGNETIC EMISSION DURING 2 FREQUENCYIONOSPHERIC HEATING EXPERIMENTS, Physical review letters, 72(18), 1994, pp. 2879-2882
Citations number
34
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
18
Year of publication
1994
Pages
2879 - 2882
Database
ISI
SICI code
0031-9007(1994)72:18<2879:EOSEED>2.0.ZU;2-6
Abstract
We have discovered that stimulated electromagnetic emission (SEE), exc ited by a powerful electromagnetic (EM) wave (pump 1) in the ionospher e, can be enhanced by a second high power EM wave (pump 2) with a high er frequency. For frequency separations near 0.4 MHz, the downshifted SEE in a 40 kHz band below the frequency of pump 1 is increased by 2 d B when pump 2 is turned on. We theorize that a second EM wave generate s plasma irregularities that facilitate the mode conversion of electro static waves to yield enhanced EM emissions from pump 1.