EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux
[1] We analyze optical emissions and enhanced electron temperatures induced by high power HF radio waves as a function of power flux using the EISCAT heater with a range of effective radiated powers. The UHF radar was used to measure the electron temperatures and densities. The Digital All Sky Image...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1078.9699 2023-05-15T16:04:25+02:00 EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux C J Bryers M J Kosch A Senior M T Rietveld T K Yeoman The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.9699 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.9699 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://lra.le.ac.uk/bitstream/2381/13981/1/jgra22087.pdf text ftciteseerx 2020-05-03T00:19:33Z [1] We analyze optical emissions and enhanced electron temperatures induced by high power HF radio waves as a function of power flux using the EISCAT heater with a range of effective radiated powers. The UHF radar was used to measure the electron temperatures and densities. The Digital All Sky Imager was used to record the 630.0 nm optical emission intensities. We quantify the HF flux loss due to self-absorption in the D-region (typically 3-11 dB) and refraction in the F-region to determine the flux which reaches the upper-hybrid resonance height. We find a quasi-linear relationship between the HF flux and both the temperature enhancement and the optical emission excitation rate with a threshold at $37.5 mWm À2 . On average $70% of the HF flux at the upper-hybrid resonance height goes in to heating the electrons for fluxes above the threshold compared to $40% for fluxes below the threshold. Citation: Bryers, C. J., M. J. Kosch, A. Senior, M. T. Rietveld, and T. K. Yeoman (2012), EISCAT observations of pumpenhanced plasma temperature and optical emission excitation rate as a function of power flux Text EISCAT Unknown |
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description |
[1] We analyze optical emissions and enhanced electron temperatures induced by high power HF radio waves as a function of power flux using the EISCAT heater with a range of effective radiated powers. The UHF radar was used to measure the electron temperatures and densities. The Digital All Sky Imager was used to record the 630.0 nm optical emission intensities. We quantify the HF flux loss due to self-absorption in the D-region (typically 3-11 dB) and refraction in the F-region to determine the flux which reaches the upper-hybrid resonance height. We find a quasi-linear relationship between the HF flux and both the temperature enhancement and the optical emission excitation rate with a threshold at $37.5 mWm À2 . On average $70% of the HF flux at the upper-hybrid resonance height goes in to heating the electrons for fluxes above the threshold compared to $40% for fluxes below the threshold. Citation: Bryers, C. J., M. J. Kosch, A. Senior, M. T. Rietveld, and T. K. Yeoman (2012), EISCAT observations of pumpenhanced plasma temperature and optical emission excitation rate as a function of power flux |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
C J Bryers M J Kosch A Senior M T Rietveld T K Yeoman |
spellingShingle |
C J Bryers M J Kosch A Senior M T Rietveld T K Yeoman EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
author_facet |
C J Bryers M J Kosch A Senior M T Rietveld T K Yeoman |
author_sort |
C J Bryers |
title |
EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
title_short |
EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
title_full |
EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
title_fullStr |
EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
title_full_unstemmed |
EISCAT observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
title_sort |
eiscat observations of pump-enhanced plasma temperature and optical emission excitation rate as a function of power flux |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.9699 |
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EISCAT |
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EISCAT |
op_source |
https://lra.le.ac.uk/bitstream/2381/13981/1/jgra22087.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.9699 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766400037355520000 |