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A diffusive equilibrium model for the plasma density in Saturn's magnetosphere
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SYSNO ASEP 0332598 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A diffusive equilibrium model for the plasma density in Saturn's magnetosphere Title Model difuzní rovnováhy pro hustotu plazmatu v magnetosféře Saturnu Author(s) Persoon, A. M. (US)
Gurnett, D. A. (US)
Santolík, Ondřej (UFA-U) RID, ORCID
Kurth, W. S. (US)
Faden, J. B. (US)
Groene, J. B. (US)
Lewis, G. R. (GB)
Coates, A. J. (GB)
Wilson, R. J. (US)
Tokar, L. R. (US)
Wahlund, J.-E. (SE)
Moncuquet, M. (FR)Source Title Journal of Geophysical Research - ISSN 0148-0227
Roč. 114, - (2009), A04211/1-A04211/19Number of pages 19 s. Language eng - English Country US - United States Keywords diffusive equilibrium ; Saturn's magnetosphere ; Cassini spacecraft Subject RIV BL - Plasma and Gas Discharge Physics CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000265675600006 DOI 10.1029/2008JA013912 Annotation Electron density measurements have been obtained by the Cassini Radio and Plasma Wave Science (RPWS) instrument for more than 50 passes through Saturn’s inner magnetosphere from 30 June 2004 to 30 September 2007. The electron densities are derived from RPWS measurements of the upper hybrid resonance frequency and span latitudes up to 35 and L values from 3.6 to 10. The electron density measurements are combined with ion anisotropy measurements from the Cassini Plasma Spectrometer (CAPS) and electron temperature measurements from the RPWS and CAPS to develop a diffusive equilibrium model for the distribution of water group ions, hydrogen ions, and electrons in the inner region of Saturn’s magnetosphere. The model uses an analytical solution of the field-aligned force equation, including the ambipolar electric field, to determine the equatorial ion densities and scale heights as a function of L. Density contour plots for water group ions, hydrogen ions, and electrons are presented Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2010
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