Cavitating Langmuir turbulence observed during high-latitude ionospheric wave interaction experiments

Citation
B. Isham et al., Cavitating Langmuir turbulence observed during high-latitude ionospheric wave interaction experiments, PHYS REV L, 83(13), 1999, pp. 2576-2579
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
83
Issue
13
Year of publication
1999
Pages
2576 - 2579
Database
ISI
SICI code
0031-9007(19990927)83:13<2576:CLTODH>2.0.ZU;2-1
Abstract
Incoherent scatter radar data obtained during high power radio wave ionosph eric interaction experiments performed in northern Scandinavia show an indu ced spectral line at the O-mode pump frequency simultaneous with strong enh ancements at the natural Langmuir resonance frequency, both just below the reflection height. These characteristics provide an unmistakable signature of cavitating (a.k.a. strong) Langmuir turbulence, and show that this turbu lence occurs not only in midlatitude but also during high latitude ionosphe ric interaction experiments. Cavitating turbulence is thus not dependent on specific geophysical conditions but is due to fundamental wave-plasma inte raction processes in the ionospheric plasma.