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Oceanography and Atmospheric Sci.Atmospheric Physics

The Energy Spectrum of Accelerated Electrons from Wave-Plasma Interactions in the Ionosphere

Authors: Michael J Kosch; LANCASTER UNIV (UNITED KINGDOM) DEPT OF PHYSICS
Abstract:
A HAARP campaign was executed 1-15 April 2010. Dr. Bjorn Gustavsson attended from the United Kingdom with optical equipment from Sweden and the United Kingdom. Unfortunately, no useful data were obtained. It was therefore necessary to find the resources to repeat the campaign effort (see budget below). A HAARP campaign was executed 21 March-5 April 2011. Dr. Bjorn Gustavsson (3/21-4/5) and Prof. Mike Kosch (3/21-3/25) attended from the United Kingdom with optical equipment from Sweden and the United Kingdom. Very good optical data were obtained at multiple wavelengths (427.8, 557.7, 630.0, 7320.0, 777.4, and 844.6 nm). However, the emissions were highly structured in space and time. This fact, and the lack of electron temperature data at HAARP, made data analysis difficult. It became necessary to develop a quantitative model of the pump-wave self-absorption in the ionospheric D-region (publication 1), a quantitative model of electron heating in the ionospheric F-region (publication 2) taking into account D-region absorption, and an empirical model of electron temperature and optical emission intensity enhancements (publication 3) as a function of pump wave power. These tasks have been completed (see publications 1-3) using the EISCAT facility with its incoherent scatter radar, so progress on the originally specified task at HAARP can now be made.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Final rept. 10 Mar 2010-31 Dec 2011
Pages: 5
Report Date: 29 Jun 2012
Contract Number: FA8655-10-1-3036
Report Number: A135365
Keywords relating to this report:
ABSORPTION
D REGION
ELECTRON ACCELERATORS
ELECTRONS
EMISSION
F REGION
HEATING
INCOHERENT SCATTERING
INTERACTIONS
IONOSPHERE
OPTICAL EQUIPMENT
OPTICAL PROPERTIES
PLASMA WAVES
RADIOFREQUENCY
SPACE ENVIRONMENTS
UNITED KINGDOM
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