Volume 101, Number 1, January 2013
|Number of page(s)||5|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||23 January 2013|
Complex wakes behind objects in multispecies plasmas
1 Department of Physics, University of Oslo - Box 1048 Blindern, 0316 Oslo, Norway
2 Metamaterials Laboratory, National Research University of Information Technology, Mechanics, and Optics St. Petersburg 199034, Russia
3 Max-Planck-Insitut für Extraterrestrial Physik - Postfach 1312, 85741 Garching, Germany, EU
4 Joint Institute for High Temperatures, Russian Academy of Sciences - Izhorskaya 13, Bldg. 2, 125412 Moscow, Russia
Received: 5 October 2012
Accepted: 2 January 2013
Many space, astrophysical, technological and laboratory plasmas are multispecies. Using particle-in-cell (PIC) numerical simulations, the novel features of the wake structures behind finite-sized objects in multispecies collisionless plasma flows are studied. In electropositive plasmas, different ion species can form separate wakes with distinct ion focus regions, and give rise to polarization of the plasma. In electronegative plasmas, with a large fraction of heavy negative ions, the polarization can be stronger due to substantial ion density reduction in the wake.
PACS: 52.27.Cm – Multicomponent and negative-ion plasmas / 52.27.Lw – Dusty or complex plasmas; plasma crystals / 94.05.Jq – Spacecraft sheaths, wakes, and charging
© EPLA, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.