Earth, Moon, and Planets

, Volume 116, Issue 1, pp 55–66 | Cite as

“Twisted Beam” SEE Observations of Ionospheric Heating from HAARP

  • S. J. Briczinski
  • P. A. Bernhardt
  • C. L. Siefring
  • S.-M. Han
  • T. R. Pedersen
  • W. A. Scales
Article

Abstract

Nonlinear interactions of high power HF radio waves in the ionosphere provide aeronomers with a unique space-based laboratory capability. The High-Frequency Active Auroral Research Program (HAARP) in Gakona, Alaska is the world’s largest heating facility, yielding effective radiated powers in the gigawatt range. New results are present from HAARP experiments using a “twisted beam” excitation mode. Analysis of twisted beam heating shows that the SEE results obtained are identical to more traditional patterns. One difference in the twisted beam mode is the heating region produced is in the shape of a ring as opposed to the more traditional “solid spot” region from a pencil beam. The ring heating pattern may be more conducive to the creation of stable artificial airglow layers because of the horizontal structure of the ring. The results of these runs include artificial layer creation and evolution as pertaining to the twisted beam pattern. The SEE measurements aid the interpretation of the twisted beam interactions in the ionosphere.

Keywords

Ionospheric modification Orbital angular momentum Twisted beam 

References

  1. P.A. Bernhardt, C.A. Selcher, R.H. Lehmberg, S.P. Rodriguez, J.F. Thomason, K.M. Groves, M.J. McCarrick, G.J. Frazer, Stimulated Brillouin scatter in a magnetized ionospheric plasma. Phys. Rev. Lett. (2010). doi:10.1103/PhysRevLett.1104.165004 Google Scholar
  2. H.C. Carlson, High power HF modification: geophysics, span of EM effects, and energy budget. Adv. Space Res. 13(10), 15–24 (1993)CrossRefADSGoogle Scholar
  3. J.W. Goodman, Introduction to Fourrier optics, McGraw-Hill (1968)Google Scholar
  4. T.B. Leyser, F. Waldemarsson, S.C. Buchert, Plasma angular momentum effects and twisted incoherent scatter radar beams. Radio Sci. (2012). doi:10.1029/2011RS004819 Google Scholar
  5. T.B. Leyser, L. Norin, M.J. McCarrick, T. Pedersen, B. Gustavsson, Radio pumping of ionospheric plasma with orbital angular momentum. Phys. Rev. Lett. (2009). doi:10.1103/PhysRevLett.102.065004 Google Scholar
  6. L. Norin, T.B. Leyser, E. Nordblad, B. Thidé, M.J. McCarrick, Unprecedentedly strong and narrow electromagnetic emissions simulated by high-frequency radio waves in the ionosphere. Phys. Rev. Lett. (2009). doi:10.1103/PhysRevLett.1102.065003 Google Scholar
  7. T. Pedersen, B. Gustavsson, E. Mishin, E. MacKenzie, H.C. Carlson, M. Starks, T. Mills, Optical ring formation and ionization production in high-power HF heating experiments at HAARP. Geophys. Res. Lett. (2009). doi:10.1029/2009GL040047 Google Scholar
  8. T. Pedersen, B. Gustavsson, E. Mishin, E. Kendall, T. Mills, H.C. Carlson, A.L. Snyder, Creation of artificial ionospheric layers using high-power HF waves. Geophys. Res. Lett. (2010). doi:10.1029/2009GL041895 Google Scholar
  9. A.E. Siegman Lasers, University Science Books (1986)Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht (out side the USA) 2015

Authors and Affiliations

  • S. J. Briczinski
    • 1
  • P. A. Bernhardt
    • 1
  • C. L. Siefring
    • 1
  • S.-M. Han
    • 1
  • T. R. Pedersen
    • 2
  • W. A. Scales
    • 3
  1. 1.Naval Research LaboratoryPlasma Physics DivisionWashingtonUSA
  2. 2.Air Force Research LaboratoryKirtland AFBUSA
  3. 3.Department of Electrical EngineeringVirginia TechBlacksburgUSA

Personalised recommendations