First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere
The ionospheric electron gas can be heated artificially by a powerful radio wave. According to our modeling, the maximum effect of this heating occurs in the D-region where the electron temperature can increase by a factor of ten. Ionospheric plasma parameters such as N e , T e and T i are measured...
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ftcopernicus:oai:publications.copernicus.org:angeo34591 2023-05-15T16:04:15+02:00 First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere Kero, A. Bösinger, T. Pollari, P. Turunen, E. Rietveld, M. 2018-09-27 application/pdf https://doi.org/10.1007/s00585-000-1210-8 https://angeo.copernicus.org/articles/18/1210/2000/ eng eng doi:10.1007/s00585-000-1210-8 https://angeo.copernicus.org/articles/18/1210/2000/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.1007/s00585-000-1210-8 2020-07-20T16:27:59Z The ionospheric electron gas can be heated artificially by a powerful radio wave. According to our modeling, the maximum effect of this heating occurs in the D-region where the electron temperature can increase by a factor of ten. Ionospheric plasma parameters such as N e , T e and T i are measured by EISCAT incoherent scatter radar on a routine basis. However, in the D-region the incoherent scatter echo is very weak because of the low electron density. Moreover, the incoherent scatter spectrum from the D-region is of Lorentzian shape which gives less information than the spectrum from the E- and F-regions. These make EISCAT measurements in the D-region difficult. A combined EISCAT VHF-radar and heating experiment was carried out in November 1998 with the aim to measure the electron temperature increase due to heating. In the experiment the heater was switched on/off at 5 minute intervals and the integration time of the radar was chosen synchronously with the heating cycle. A systematic difference in the measured autocorrelation functions was found between heated and unheated periods. Key words: Ionosphere (active experiments; plasma temperature and density; wave propagation) Text EISCAT Copernicus Publications: E-Journals Annales Geophysicae 18 9 1210 1215 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The ionospheric electron gas can be heated artificially by a powerful radio wave. According to our modeling, the maximum effect of this heating occurs in the D-region where the electron temperature can increase by a factor of ten. Ionospheric plasma parameters such as N e , T e and T i are measured by EISCAT incoherent scatter radar on a routine basis. However, in the D-region the incoherent scatter echo is very weak because of the low electron density. Moreover, the incoherent scatter spectrum from the D-region is of Lorentzian shape which gives less information than the spectrum from the E- and F-regions. These make EISCAT measurements in the D-region difficult. A combined EISCAT VHF-radar and heating experiment was carried out in November 1998 with the aim to measure the electron temperature increase due to heating. In the experiment the heater was switched on/off at 5 minute intervals and the integration time of the radar was chosen synchronously with the heating cycle. A systematic difference in the measured autocorrelation functions was found between heated and unheated periods. Key words: Ionosphere (active experiments; plasma temperature and density; wave propagation) |
format |
Text |
author |
Kero, A. Bösinger, T. Pollari, P. Turunen, E. Rietveld, M. |
spellingShingle |
Kero, A. Bösinger, T. Pollari, P. Turunen, E. Rietveld, M. First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere |
author_facet |
Kero, A. Bösinger, T. Pollari, P. Turunen, E. Rietveld, M. |
author_sort |
Kero, A. |
title |
First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere |
title_short |
First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere |
title_full |
First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere |
title_fullStr |
First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere |
title_full_unstemmed |
First EISCAT measurement of electron-gas temperature in the artificially heated D-region ionosphere |
title_sort |
first eiscat measurement of electron-gas temperature in the artificially heated d-region ionosphere |
publishDate |
2018 |
url |
https://doi.org/10.1007/s00585-000-1210-8 https://angeo.copernicus.org/articles/18/1210/2000/ |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.1007/s00585-000-1210-8 https://angeo.copernicus.org/articles/18/1210/2000/ |
op_doi |
https://doi.org/10.1007/s00585-000-1210-8 |
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Annales Geophysicae |
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18 |
container_issue |
9 |
container_start_page |
1210 |
op_container_end_page |
1215 |
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1766399951307276288 |