Radio Pumping of Ionospheric Plasma with Orbital Angular Momentum

Journal Article · Fri Feb 13 04:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.065004· OSTI ID:21180203

Leyser, T B ^[1]; Norin, L ^[2]; McCarrick, M ^[3]; Pedersen, T R ^[4]; Gustavsson, B ^[5]

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1. Swedish Institute of Space Physics, Box 537, SE-751 21 Uppsala (Sweden)
2. Department of Physics and Astronomy, Uppsala University, Box 515, Uppsala SE-751 20 (Sweden)
3. BAE SYSTEMS Advanced Technologies, 1250 24th St, NW, Suite 850, Washington, D.C. (United States)
4. Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts 01731 (United States)
5. Department of Physics and Technology, University of Tromsoe, N-9037 Tromsoe (Norway)

Experimental results are presented of pumping ionospheric plasma with a radio wave carrying orbital angular momentum (OAM), using the High Frequency Active Auroral Research Program (HAARP) facility in Alaska. Optical emissions from the pumped plasma turbulence exhibit the characteristic ring-shaped morphology when the pump beam carries OAM. Features of stimulated electromagnetic emissions (SEE) that are attributed to cascading Langmuir turbulence are well developed for a regular beam but are significantly weaker for a ring-shaped OAM beam in which case upper hybrid turbulence dominates the SEE.

• OSTI ID: 21180203
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 102; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
IONOSPHERE
MORPHOLOGY
ORBITAL ANGULAR MOMENTUM
PHOTON EMISSION
PLASMA
RADIOWAVE RADIATION
RESEARCH PROGRAMS
TURBULENCE