HR: 1340h
AN: P33C-0254    [Abstracts]
TI: Measurement of the Electronic and Ionic Conductivities With a Relaxation Probe in the Atmosphere of Titan
AU: Grard, R
EM: rgrard@rssd.esa.int
AF: Research and Scientific Support Department (RSSD), ESA/ESTEC, Keplerlaan 1, Noordwijk, 2200 Netherlands
AU: Brown, V
P33C-0254 AF: Instituto de Astrofisica de Andalucia (IAA), CSIC, P.O. Box 3004, Granada, E-18080 Spain
AU: Chabassiere, M
P33C-0254 AF: Laboratoire de Physique et Chimie de l'Environnement (LPCE), CNRS, 3A Avenue de la Recherche Scientifique, Cedex, Orleans, F-45071 France
AU: Falkner, P
P33C-0254 AF: Science Payload and Advanced Concepts Office, ESA/ESTEC, Keplerlaan 1, Noordwijk, 2200 Netherlands
AU: Ferri, F
P33C-0254 AF: Centro Interdipartimentale Studi ed Attivit… Spaziali 'G. Colombo', Via Venezia 15, Padova, 35131 Italy
AU: Fulchignoni, M
P33C-0254 AF: Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique (LESIA), Observatoire de Paris - Meudon, 5, place Jules Janssen, cedex, Meudon, F-92195 France
AU: * Hamelin, M
P33C-0254 AF: Centre d'etude des Environments Terrestre et Plan‚taires (CETP), CNRS, 4, Avenue de Neptune, Saint Maur Cedex, F-94107 France
AU: Hofe, R
P33C-0254 AF: Institut fur Weltraumforschung (IWF), Austrian Academy of Sciences, Schmiedlstrasse 6, Graz, A-8042 Austria
AU: Jernej, I
P33C-0254 AF: Institut fur Weltraumforschung (IWF), Austrian Academy of Sciences, Schmiedlstrasse 6, Graz, A-8042 Austria
AU: Lara, L
P33C-0254 AF: Instituto de Astrofisica de Andalucia (IAA), CSIC, P.O. Box 3004, Granada, E-18080 Spain
AU: Lopez-Moreno, J
P33C-0254 AF: Instituto de Astrofisica de Andalucia (IAA), CSIC, P.O. Box 3004, Granada, E-18080 Spain
AU: Molina-Cuberos, G
P33C-0254 AF: Dpto. Fisica, Facultad de Quimicas, Universidad de Murcia, Murcia, 30100 Spain
AU: Rodrigo, R
P33C-0254 AF: Instituto de Astrofisica de Andalucia (IAA), CSIC, P.O. Box 3004, Granada, E-18080 Spain
AU: Schwingenschuh, K
P33C-0254 AF: Institut fur Weltraumforschung (IWF), Austrian Academy of Sciences, Schmiedlstrasse 6, Graz, A-8042 Austria
AU: Simoes, F
EM: fernando.simoes@cetp.ipsl.fr
AF: Centre d'etude des Environments Terrestre et Plan‚taires (CETP), CNRS, 4, Avenue de Neptune, Saint Maur Cedex, F-94107 France
AU: Trautner, R
P33C-0254 AF: Research and Scientific Support Department (RSSD), ESA/ESTEC, Keplerlaan 1, Noordwijk, 2200 Netherlands
AB: The Permittivity, Waves, and Altimetry (PWA) analyzer, a subsystem of the Huygens Atmospheric Structure Instrument (HASI), landed on Titan in January 2005. This instrument included two Relaxation Probes to measure the electric conductivities of the atmosphere from an altitude of 150km, downwards. We first present a detailed modelisation of the electric system formed by the Huygens Probe body and the relaxation probes. The performance of the instrument is drastically different in the atmosphere of Titan and of the Earth, because the charge carriers are positive and negative ions on Earth, whereas electrons are also present in the case of Titan. Then, we give an interpretation of the experimental data in the light of the simulation results.
DE: 5405 Atmospheres (0343, 1060)
DE: 5435 Ionospheres (2459)
DE: 5494 Instruments and techniques
DE: 6281 Titan
DE: 6929 Ionospheric physics (1240, 2400)
SC: Planetary Sciences [P]
MN: Fall Meeting 2005