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Radio Pumping of Ionospheric Plasma with Orbital Angular Momentum
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 102, no 6, 065004- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2009. Vol. 102, no 6, 065004- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-152124DOI: 10.1103/PhysRevLett.102.065004ISI: 000263389500030OAI: oai:DiVA.org:uu-152124DiVA: diva2:412514
Available from: 2011-04-25 Created: 2011-04-25 Last updated: 2017-12-11Bibliographically approved

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Swedish Institute of Space Physics, Uppsala DivisionDepartment of Physics and Astronomy
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Physical Review Letters
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