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Ionization balance ...
Ionization balance in Titan's nightside ionosphere
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- Vigren, Erik (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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Galand, M. (author)
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Yelle, R. V. (author)
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Wellbrock, A. (author)
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Coates, A. J. (author)
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Snowden, D. (author)
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Cui, J. (author)
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Lavvas, P. (author)
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- Edberg, Niklas (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Shebanits, Oleg (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Wahlund, Jan Erik (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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Vuitton, V. (author)
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Mandt, K. (author)
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- English.
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In: Icarus. - : Elsevier BV. - 0019-1035 .- 1090-2643. ; 248, s. 539-546
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Based on a multi-instrumental Cassini dataset we make model versus observation comparisons of plasma number densities, n(p) = (n(e)n(1))(1/2) (n(e) and n(1) being the electron number density and total positive ion number density, respectively) and short-lived ion number densities (N+, CH2+, CH3+, CH4+) in the southern hemisphere of Titan's nightside ionosphere over altitudes ranging from 1100 and 1200 km and from 1100 to 1350 km, respectively. The n(p) model assumes photochemical equilibrium, ion-electron pair production driven by magnetospheric electron precipitation and dissociative recombination as the principal plasma neutralization process. The model to derive short-lived-ion number densities assumes photochemical equilibrium for the short-lived ions, primary ion production by electron-impact ionization of N-2 and CH4 and removal of the short-lived ions through reactions with CH4. It is shown that the models reasonably reproduce the observations, both with regards to tip and the number densities of the short-lived ions. This is contrasted by the difficulties in accurately reproducing ion and electron number densities in Titan's sunlit ionosphere. (C) 2014 Elsevier Inc. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Titan
- Ionospheres
- Titan
- atmosphere
Publication and Content Type
- ref (subject category)
- art (subject category)
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Icarus
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- By the author/editor
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Vigren, Erik
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Galand, M.
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Yelle, R. V.
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Wellbrock, A.
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Coates, A. J.
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Snowden, D.
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show more...
-
Cui, J.
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Lavvas, P.
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Edberg, Niklas
-
Shebanits, Oleg
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Wahlund, Jan Eri ...
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Vuitton, V.
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Mandt, K.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Icarus
- By the university
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Uppsala University