Competition between Langmuir and Upper-Hybrid Turbulence in a High-Frequency-Pumped Ionosphere

B. Thidé, E. N. Sergeev, S. M. Grach, T. B. Leyser, and T. D. Carozzi

Phys. Rev. Lett. 95, 255002 – Published 15 December 2005

Abstract

We show how the secondary escaping radiation, also known as stimulated electromagnetic emission (SEE), from the ionosphere irradiated by a high-intensity radio beam, can be used to study both reflection altitude ponderomotive parametric instabilities and upper-hybrid altitude thermal parametric instabilities. This has allowed us to observe the transfer of energy from smaller to higher sideband frequency offsets and to identify a new transient SEE feature.

Received 7 April 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.255002

Authors & Affiliations

B. Thidé^1,*, E. N. Sergeev², S. M. Grach^2,†, T. B. Leyser¹, and T. D. Carozzi³

¹Swedish Institute of Space Physics, P.O. Box 537, SE-751 21 Uppsala, Sweden
²Radiophysical Research Institute, B. Pecherskaya 25, Nizhniy Novgorod, RU-603 950, Russia
³Space Science Centre, University of Sussex, Brighton, BN1 9QT, United Kingdom

^*Also at LOIS Space Centre, Växjö University, SE-351 95 Växjö, Sweden. Electronic address: bt@irfu.se
^†Also at Radiophysical Faculty, Nizhniy Novgorod State University, Nizhniy Novgorod, Russia.

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Vol. 95, Iss. 25 — 16 December 2005

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