Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith
High-frequency electromagnetic pumping of ionospheric F-region plasma at high and mid latitudes gives the strongest plasma response in magnetic zenith, antiparallel to the geomagnetic field in the Northern Hemisphere. This has been observed in optical emissions from the pumped plasma turbulence, ele...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00050873 2023-05-15T16:04:32+02:00 Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith Leyser, Thomas B. Gustavsson, Björn Rexer, Theresa Rietveld, Michael T. 2020-03 electronic https://doi.org/10.5194/angeo-38-297-2020 https://noa.gwlb.de/receive/cop_mods_00050873 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00050530/angeo-38-297-2020.pdf https://angeo.copernicus.org/articles/38/297/2020/angeo-38-297-2020.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-38-297-2020 https://noa.gwlb.de/receive/cop_mods_00050873 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00050530/angeo-38-297-2020.pdf https://angeo.copernicus.org/articles/38/297/2020/angeo-38-297-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/angeo-38-297-2020 2022-02-08T22:36:40Z High-frequency electromagnetic pumping of ionospheric F-region plasma at high and mid latitudes gives the strongest plasma response in magnetic zenith, antiparallel to the geomagnetic field in the Northern Hemisphere. This has been observed in optical emissions from the pumped plasma turbulence, electron temperature enhancements, filamentary magnetic field-aligned plasma density irregularities, and in self-focusing of the pump beam in magnetic zenith. We present results of EISCAT (European Incoherent SCATter association) Heating-induced magnetic-zenith effects observed with the EISCAT UHF incoherent scatter radar. With heating transmitting a left-handed circularly polarized pump beam towards magnetic zenith, the UHF radar was scanned in elevation in steps of 1.0 and 1.5∘ around magnetic zenith. The electron energy equation was integrated to model the electron temperature and associated electron heating rate and optimized to fit the plasma parameter values measured with the radar. The experimental and modelling results are consistent with pump wave propagation in the L mode in magnetic zenith, rather than in the O mode. Article in Journal/Newspaper EISCAT Niedersächsisches Online-Archiv NOA Annales Geophysicae 38 2 297 307 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Leyser, Thomas B. Gustavsson, Björn Rexer, Theresa Rietveld, Michael T. Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith |
topic_facet |
article Verlagsveröffentlichung |
description |
High-frequency electromagnetic pumping of ionospheric F-region plasma at high and mid latitudes gives the strongest plasma response in magnetic zenith, antiparallel to the geomagnetic field in the Northern Hemisphere. This has been observed in optical emissions from the pumped plasma turbulence, electron temperature enhancements, filamentary magnetic field-aligned plasma density irregularities, and in self-focusing of the pump beam in magnetic zenith. We present results of EISCAT (European Incoherent SCATter association) Heating-induced magnetic-zenith effects observed with the EISCAT UHF incoherent scatter radar. With heating transmitting a left-handed circularly polarized pump beam towards magnetic zenith, the UHF radar was scanned in elevation in steps of 1.0 and 1.5∘ around magnetic zenith. The electron energy equation was integrated to model the electron temperature and associated electron heating rate and optimized to fit the plasma parameter values measured with the radar. The experimental and modelling results are consistent with pump wave propagation in the L mode in magnetic zenith, rather than in the O mode. |
format |
Article in Journal/Newspaper |
author |
Leyser, Thomas B. Gustavsson, Björn Rexer, Theresa Rietveld, Michael T. |
author_facet |
Leyser, Thomas B. Gustavsson, Björn Rexer, Theresa Rietveld, Michael T. |
author_sort |
Leyser, Thomas B. |
title |
Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith |
title_short |
Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith |
title_full |
Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith |
title_fullStr |
Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith |
title_full_unstemmed |
Electron heating by HF pumping of high-latitude ionospheric F-region plasma near magnetic zenith |
title_sort |
electron heating by hf pumping of high-latitude ionospheric f-region plasma near magnetic zenith |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/angeo-38-297-2020 https://noa.gwlb.de/receive/cop_mods_00050873 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00050530/angeo-38-297-2020.pdf https://angeo.copernicus.org/articles/38/297/2020/angeo-38-297-2020.pdf |
genre |
EISCAT |
genre_facet |
EISCAT |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-38-297-2020 https://noa.gwlb.de/receive/cop_mods_00050873 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00050530/angeo-38-297-2020.pdf https://angeo.copernicus.org/articles/38/297/2020/angeo-38-297-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/angeo-38-297-2020 |
container_title |
Annales Geophysicae |
container_volume |
38 |
container_issue |
2 |
container_start_page |
297 |
op_container_end_page |
307 |
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