Positive ion composition and derived particle heating in the lower auroral ionosphere
Two E11a rocket flights in salvo B (launched on November 16, 1980) and A2 (launched on November 30, 1980), which provide positive ion composition, total and partial ion density, and electron density in the altitude range 60-170 km above Kiruna under conditions of moderate and strong magnetic disturb...
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1985
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ftnasantrs:oai:casi.ntrs.nasa.gov:19850048420 2023-05-15T17:04:15+02:00 Positive ion composition and derived particle heating in the lower auroral ionosphere Kopp, E. Andre, L. Smith, L. G. Unclassified, Unlimited, Publicly available Mar 1, 1985 http://ntrs.nasa.gov/search.jsp?R=19850048420 unknown http://ntrs.nasa.gov/search.jsp?R=19850048420 Accession ID: 85A30571 Copyright Other Sources 46 Journal of Atmospheric and Terrestrial Physics; 47; 301-308 1985 ftnasantrs 2012-02-15T16:20:48Z Two E11a rocket flights in salvo B (launched on November 16, 1980) and A2 (launched on November 30, 1980), which provide positive ion composition, total and partial ion density, and electron density in the altitude range 60-170 km above Kiruna under conditions of moderate and strong magnetic disturbance, are examined. It is shown that the ionization sources are predominantly precipitating electrons in salvo B and precipitating protons in salvo A2. Under winter-time auroral conditions the characteristics of the positive ion composition are large NO(+)/O2(+) density ratios, with maximum values of 20 at 118 km in salvo B and 100 at 100 km in salvo A2, respectively. The transition from NO(+) to proton hydrates is found at an altitude of 79 km in salvo B and 76 km in salvo A2. The calculated O(+) and N(+) densities are in good agreement with model calculations and from these calculations it is concluded that 28(+) is mainly N2(+) above 110 km in salvo B and above 105 km in salvo A2, and Si(+) below these altitudes. By altitude integration of the ion-electron pair production, the energy flux of precipitating particles is found to have values of 0.85 mW/sq m and 1.0 mW/sq m in salvoes B and A2, respectively. Other/Unknown Material Kiruna NASA Technical Reports Server (NTRS) Kiruna |
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NASA Technical Reports Server (NTRS) |
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46 Kopp, E. Andre, L. Smith, L. G. Positive ion composition and derived particle heating in the lower auroral ionosphere |
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Two E11a rocket flights in salvo B (launched on November 16, 1980) and A2 (launched on November 30, 1980), which provide positive ion composition, total and partial ion density, and electron density in the altitude range 60-170 km above Kiruna under conditions of moderate and strong magnetic disturbance, are examined. It is shown that the ionization sources are predominantly precipitating electrons in salvo B and precipitating protons in salvo A2. Under winter-time auroral conditions the characteristics of the positive ion composition are large NO(+)/O2(+) density ratios, with maximum values of 20 at 118 km in salvo B and 100 at 100 km in salvo A2, respectively. The transition from NO(+) to proton hydrates is found at an altitude of 79 km in salvo B and 76 km in salvo A2. The calculated O(+) and N(+) densities are in good agreement with model calculations and from these calculations it is concluded that 28(+) is mainly N2(+) above 110 km in salvo B and above 105 km in salvo A2, and Si(+) below these altitudes. By altitude integration of the ion-electron pair production, the energy flux of precipitating particles is found to have values of 0.85 mW/sq m and 1.0 mW/sq m in salvoes B and A2, respectively. |
format |
Other/Unknown Material |
author |
Kopp, E. Andre, L. Smith, L. G. |
author_facet |
Kopp, E. Andre, L. Smith, L. G. |
author_sort |
Kopp, E. |
title |
Positive ion composition and derived particle heating in the lower auroral ionosphere |
title_short |
Positive ion composition and derived particle heating in the lower auroral ionosphere |
title_full |
Positive ion composition and derived particle heating in the lower auroral ionosphere |
title_fullStr |
Positive ion composition and derived particle heating in the lower auroral ionosphere |
title_full_unstemmed |
Positive ion composition and derived particle heating in the lower auroral ionosphere |
title_sort |
positive ion composition and derived particle heating in the lower auroral ionosphere |
publishDate |
1985 |
url |
http://ntrs.nasa.gov/search.jsp?R=19850048420 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19850048420 Accession ID: 85A30571 |
op_rights |
Copyright |
_version_ |
1766058312925708288 |