Self-focused radio frequency L wave pumping of localized upper hybrid oscillations in high-latitude ionospheric plasma
2009 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 36, no 24, L24105- p.Article in journal (Refereed) Published
In experiments on radio frequency pumping of ionospheric plasma it is usually assumed that the pump wave propagates in the ordinary (O) mode. However, it is shown by ray tracing that commonly excited filamentary density inhomogeneities will guide a transmitted O-mode pump wave along the geomagnetic field as an L wave. Nonlinearly guided L-wave pumping of long predicted localized upper hybrid oscillations offers a unified understanding of a range of experimental results, including strong self-focusing for pump beams near geomagnetic zenith.
Place, publisher, year, edition, pages
2009. Vol. 36, no 24, L24105- p.
IdentifiersURN: urn:nbn:se:uu:diva-148208DOI: 10.1029/2009GL041438ISI: 000273254900004OAI: oai:DiVA.org:uu-148208DiVA: diva2:401651