Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility
New results on the information that can be extracted from simulated non-Maxwellian incoherent radar spectra are presented. The cases of a pure ionosphere and of a composite ionosphere typical of a given altitude of the auroral F region are considered. In the case of a pure ionosphere of NO+ or O+ io...
Published in: | Annales Geophysicae |
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Language: | English |
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Springer Verlag
1996
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Online Access: | https://doi.org/10.1007/s00585-996-1506-4 https://noa.gwlb.de/receive/cop_mods_00037677 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00037631/angeo-14-1506-1996.pdf https://angeo.copernicus.org/articles/14/1506/1996/angeo-14-1506-1996.pdf |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00037677 2023-05-15T16:04:48+02:00 Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility Hubert, D. Leblanc, F. Gaimard, P. 1996-12 electronic https://doi.org/10.1007/s00585-996-1506-4 https://noa.gwlb.de/receive/cop_mods_00037677 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00037631/angeo-14-1506-1996.pdf https://angeo.copernicus.org/articles/14/1506/1996/angeo-14-1506-1996.pdf eng eng Springer Verlag 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/10.1007/s00585-996-1506-4 https://noa.gwlb.de/receive/cop_mods_00037677 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00037631/angeo-14-1506-1996.pdf https://angeo.copernicus.org/articles/14/1506/1996/angeo-14-1506-1996.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 1996 ftnonlinearchiv https://doi.org/10.1007/s00585-996-1506-4 2022-02-08T22:43:25Z New results on the information that can be extracted from simulated non-Maxwellian incoherent radar spectra are presented. The cases of a pure ionosphere and of a composite ionosphere typical of a given altitude of the auroral F region are considered. In the case of a pure ionosphere of NO+ or O+ ions it has been shown that the electron temperature and the electron density can be derived from a Maxwellian analysis of radar spectra measured at aspect angles of 0° or 21° respectively; the ion temperature and ion temperature anisotropy can be derived from a non- constraining model such as the 1D Raman fitting of a complementary measurement made at an aspect angle larger than 0° for the NO+ ions, or at an aspect angle larger than 21° for the O+ ions. Moreover with such measurements at large aspect angles, the shape of the velocity ion distribution functions can simultaneously be inferred. The case of a composite ionosphere of atomic O+ and molecular NO+ ions is a difficult challenge which requires simultaneously a complementary measurement of the electron temperature to provide the ion composition and the electron density from the incoherent radar spectra at a specific aspect angle of 21°; hence, a model dependent routine is necessary to derive the ion temperatures and ion temperature anisotropies. In the case where the electron temperature is not given, a routine which depends on ion distribution models is required first: the better the ion distribution models are, the more accurately derived the plasma parameters will be. In both cases of a composite ionosphere, the 1D Raman fitting can be used to keep a check on the validity of the results provided by the ion distribution model dependent routine. Article in Journal/Newspaper EISCAT Niedersächsisches Online-Archiv NOA Annales Geophysicae 14 12 1506 1512 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Hubert, D. Leblanc, F. Gaimard, P. Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility |
topic_facet |
article Verlagsveröffentlichung |
description |
New results on the information that can be extracted from simulated non-Maxwellian incoherent radar spectra are presented. The cases of a pure ionosphere and of a composite ionosphere typical of a given altitude of the auroral F region are considered. In the case of a pure ionosphere of NO+ or O+ ions it has been shown that the electron temperature and the electron density can be derived from a Maxwellian analysis of radar spectra measured at aspect angles of 0° or 21° respectively; the ion temperature and ion temperature anisotropy can be derived from a non- constraining model such as the 1D Raman fitting of a complementary measurement made at an aspect angle larger than 0° for the NO+ ions, or at an aspect angle larger than 21° for the O+ ions. Moreover with such measurements at large aspect angles, the shape of the velocity ion distribution functions can simultaneously be inferred. The case of a composite ionosphere of atomic O+ and molecular NO+ ions is a difficult challenge which requires simultaneously a complementary measurement of the electron temperature to provide the ion composition and the electron density from the incoherent radar spectra at a specific aspect angle of 21°; hence, a model dependent routine is necessary to derive the ion temperatures and ion temperature anisotropies. In the case where the electron temperature is not given, a routine which depends on ion distribution models is required first: the better the ion distribution models are, the more accurately derived the plasma parameters will be. In both cases of a composite ionosphere, the 1D Raman fitting can be used to keep a check on the validity of the results provided by the ion distribution model dependent routine. |
format |
Article in Journal/Newspaper |
author |
Hubert, D. Leblanc, F. Gaimard, P. |
author_facet |
Hubert, D. Leblanc, F. Gaimard, P. |
author_sort |
Hubert, D. |
title |
Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility |
title_short |
Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility |
title_full |
Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility |
title_fullStr |
Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility |
title_full_unstemmed |
Current state-of-the-art for the measurement of non-Maxwellian plasma parameters with the EISCAT UHF Facility |
title_sort |
current state-of-the-art for the measurement of non-maxwellian plasma parameters with the eiscat uhf facility |
publisher |
Springer Verlag |
publishDate |
1996 |
url |
https://doi.org/10.1007/s00585-996-1506-4 https://noa.gwlb.de/receive/cop_mods_00037677 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00037631/angeo-14-1506-1996.pdf https://angeo.copernicus.org/articles/14/1506/1996/angeo-14-1506-1996.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/10.1007/s00585-996-1506-4 https://noa.gwlb.de/receive/cop_mods_00037677 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00037631/angeo-14-1506-1996.pdf https://angeo.copernicus.org/articles/14/1506/1996/angeo-14-1506-1996.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00585-996-1506-4 |
container_title |
Annales Geophysicae |
container_volume |
14 |
container_issue |
12 |
container_start_page |
1506 |
op_container_end_page |
1512 |
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1766400438738878464 |