Potential structure around the Cassini spacecraft near the orbit of Enceladus

Olson, J.; Miloch, W. J.; Ratynskaia, S.; Yaroshenko, V.
October 2010
Physics of Plasmas;Oct2010, Vol. 17 Issue 10, p102904
Academic Journal
We present the results of numerical simulations of the potential structure around an object in a streaming plasma with parameters relevant for the Cassini spacecraft passing through Saturn's plasma disk near the orbit of Enceladus. Two- and three-dimensional particle-in-cell codes have been used allowing the potential of the simulated spacecraft body to develop self-consistently through the collection of charge by its surface. The dependence of the density and potential profiles on ambient plasma density, electron temperature, and ion drift speed is discussed. The spacecraft floating potential values, found in the simulations, are compared to those deduced from the analysis of Cassini Langmuir probe characteristics.


Related Articles

  • Investigations of Ion Confinement by Direct Current Coaxial Glow Discharge. Abu-Hashem, Alaa; Hassouba, Mohamed Ali; Masoud, Mohamed Mahmoud // Journal of Modern Physics (21531196);Jan2012, Vol. 3 Issue 1, p48 

    A cylindrical dc coaxial glow discharge system with inner grid cathode was designed for ion confinement, and successfully operated with low discharge current. The plasma is formed inside the cylindrical grid cathode. The discharge current- voltage characteristic curves and Paschen curve are...

  • Effect of hydrogen ratio on plasma parameters of N-H gas mixture glow discharge. El-Brulsy, R.; Abd Al-Halim, M.; Abu-Hashem, A.; Rashed, U.; Hassouba, M. // Plasma Physics Reports;May2012, Vol. 38 Issue 5, p432 

    A dc plane glow discharge in a nitrogen-hydrogen (N-H) gas mixture has been operated at discharge currents of 10 and 20 mA. The electron energy distribution function (EEDF) at different hydrogen concentrations is measured. A Maxwellian EEDF is found in the positive column region, while in both...

  • Experimental study of a photoelectron sheath. Dove, Adrienne; Horanyi, Mihaly; Wang, Xu; Piquette, Marcus; Poppe, Andrew R.; Robertson, Scott // Physics of Plasmas;Apr2012, Vol. 19 Issue 4, p043502 

    We describe a set of laboratory experiments to reproduce and investigate the photoelectron layer that occurs above UV-illuminated surfaces in space. The experiments are done in vacuum with UV illumination at 172 nm that is sufficiently intense for the creation of a photoelectron layer above a...

  • The fixed-bias Langmuir probe on the Communication/Navigation Outage Forecast System satellite: Calibration and validation. Klenzing, J.; Rowland, D. // Review of Scientific Instruments;Nov2012, Vol. 83 Issue 11, p114501 

    A fixed-bias spherical Langmuir probe is included as part of the Vector Electric Field Instrument (VEFI) suite on the Communication/Navigation Outage Forecast System (C/NOFS) satellite. C/NOFS gathers data in the equatorial ionosphere between 400 and 860 km, where the primary constituent ions...

  • RPC-LAP: The Rosetta Langmuir Probe Instrument. Eriksson, A. I.; Boström, R.; Gill, R.; Åhlén, L.; Jansson, S.-E.; Wahlund, J.-E.; André, M.; Mälkki, A.; Holtet, J. A.; Lybekk, B.; Pedersen, A.; Blomberg, L. // Space Science Reviews;Oct2006, Vol. 128 Issue 1-4, p729 

    The Rosetta dual Langmuir probe instrument, LAP, utilizes the multiple powers of a pair of spherical Langmuir probes for measurements of basic plasma parameters with the aim of providing detailed knowledge of the outgassing, ionization, and subsequent plasma processes around the Rosetta target...

  • Payload charging events in the mesosphere and their impact on Langmuir type electric probes. Bekkeng, T. A.; Barjatya, A.; Hoppe, U.-P.; Pedersen, A.; Moen, J. I.; Friedrich, M.; Rapp, M. // Annales Geophysicae (09927689);2013, Vol. 31 Issue 2, p187 

    Three sounding rockets were launched from Andøya Rocket Range in the ECOMA campaign in December 2010. The aim was to study the evolution of meteoric smoke particles during a major meteor shower. Of the various instruments onboard the rocket payload, this paper presents the data from a...

  • First experimental results on the IShTAR testbed. D'Inca, R.; Jacquot, J.; Ochoukov, R.; Morgal, I.; Crombe, K.; Louche, F.; Van Eester, D.; Heuraux, S.; Devaux, S.; Moritz, J.; Faudot, E.; Fünfgelder, H.; Faugel, H.; Noterdaeme, J. -M. // AIP Conference Proceedings;2015, Vol. 1689 Issue 1, p1 

    IShTAR (Ion cyclotron Sheath Test ARrangement) is a linear magnetized plasma test facility dedicated to the investigation of RF wave/plasma interaction [1] in the Ion Cyclotron Range of Frequencies (ICRF). It provides a better accessibility for the instrumentation than tokamaks while being...

  • GPS and in situ Swarm observations of the equatorial plasma density irregularities in the topside ionosphere. Zakharenkova, Irina; Astafyeva, Elvira; Cherniak, Iurii // Earth, Planets & Space;7/15/2016, Vol. 68 Issue 1, p1 

    Here we study the global distribution of the plasma density irregularities in the topside ionosphere by using the concurrent GPS and Langmuir probe measurements onboard the Swarm satellites. We analyze 18 months (from August 2014 till January 2016) of data from Swarm A and B satellites that flew...

  • Response to “Comment on ‘One-dimensional model of the plasma flow in a Hall thruster’ ” [Phys. Plasmas 10, 1172 (2003)]. Ahedo, E.; Martınez-Sánchez, M. // Physics of Plasmas;Apr2003, Vol. 10 Issue 4, p1174 

    There is no missing term in the reduced equation for the density. The controversy comes from an error on the original paper in the equation for the electron temperature, but the subsequent equations and calculations were based on the correct equation. A minor error in a figure is accepted.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics