Radio Pumping of Ionospheric Plasma with Orbital Angular Momentum

T. B. Leyser, L. Norin, M. McCarrick, T. R. Pedersen, and B. Gustavsson
Phys. Rev. Lett. 102, 065004 – Published 12 February 2009

Abstract

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.

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  • Received 8 October 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.065004

©2009 American Physical Society

Authors & Affiliations

T. B. Leyser1,*, L. Norin2, M. McCarrick3, T. R. Pedersen4, and B. Gustavsson5

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

  • *thomas.leyser@irfu.se

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Vol. 102, Iss. 6 — 13 February 2009

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