A diffusive equilibrium model for the plasma density in Saturn's magnetosphere

0332598 - ÚFA 2010 RIV US eng J - Journal Article
Persoon, A. M. - Gurnett, D. A. - Santolík, Ondřej - Kurth, W. S. - Faden, J. B. - Groene, J. B. - Lewis, G. R. - Coates, A. J. - Wilson, R. J. - Tokar, L. R. - Wahlund, J.-E. - Moncuquet, M.
A diffusive equilibrium model for the plasma density in Saturn's magnetosphere.
[Model difuzní rovnováhy pro hustotu plazmatu v magnetosféře Saturnu.]
Journal of Geophysical Research. Roč. 114, - (2009), A04211/1-A04211/19. ISSN 0148-0227
Institutional research plan: CEZ:AV0Z30420517
Keywords : diffusive equilibrium * Saturn's magnetosphere * Cassini spacecraft
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 3.082, year: 2009

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

Model difuzní rovnováhy pro hustotu plazmatu v magnetosféře Saturnu, s využitím dat družice Cassini.
Permanent Link: http://hdl.handle.net/11104/0177812