Three-dimensional particle simulations of ion optics plasma flow

1998 ◽  
Author(s):  
J. Wang ◽  
J. Anderson ◽  
J. Polk
Keyword(s):  
Plasma Flow ◽  
Three Dimensional ◽  
Ion Optics ◽  
Particle Simulations

Three-Dimensional Particle Simulations of Ion-Optics Plasma Flow and Grid Erosion

2003 ◽  
Vol 19 (6) ◽  
pp. 1192-1199 ◽  
Author(s):  
Joseph Wang ◽  
James Polk ◽  
John Brophy ◽  
Ira Katz
Keyword(s):  
Plasma Flow ◽  
Three Dimensional ◽  
Ion Optics ◽  
Particle Simulations

scholarly journals Three-dimensional multispecies hybrid simulation of Titan's highly variable plasma environment

2007 ◽  
Vol 25 (1) ◽  
pp. 117-144 ◽  
Author(s):  
S. Simon ◽  
A. Boesswetter ◽  
T. Bagdonat ◽  
U. Motschmann ◽  
J. Schuele
Keyword(s):  
Plasma Flow ◽  
Flow Direction ◽  
Three Dimensional ◽  
Hybrid Simulation ◽  
Slight Modification ◽  
Magnetospheric Plasma ◽  
Particle Model ◽  
Tail Region ◽  
Simulation Code ◽  
Ion Species

Abstract. The interaction between Titan's ionosphere and the Saturnian magnetospheric plasma flow has been studied by means of a three-dimensional (3-D) hybrid simulation code. In the hybrid model, the electrons form a mass-less, charge-neutralizing fluid, whereas a completely kinetic approach is retained to describe ion dynamics. The model includes up to three ionospheric and two magnetospheric ion species. The interaction gives rise to a pronounced magnetic draping pattern and an ionospheric tail that is highly asymmetric with respect to the direction of the convective electric field. Due to the dependence of the ion gyroradii on the ion mass, ions of different masses become spatially dispersed in the tail region. Therefore, Titan's ionospheric tail may be considered a mass-spectrometer, allowing to distinguish between ion species of different masses. The kinetic nature of this effect is emphasized by comparing the simulation with the results obtained from a simple analytical test-particle model of the pick-up process. Besides, the results clearly illustrate the necessity of taking into account the multi-species nature of the magnetospheric plasma flow in the vicinity of Titan. On the one hand, heavy magnetospheric particles, such as atomic Nitrogen or Oxygen, experience only a slight modification of their flow pattern. On the other hand, light ionospheric ions, e.g. atomic Hydrogen, are clearly deflected around the obstacle, yielding a widening of the magnetic draping pattern perpendicular to the flow direction. The simulation results clearly indicate that the nature of this interaction process, especially the formation of sharply pronounced plasma boundaries in the vicinity of Titan, is extremely sensitive to both the temperature of the magnetospheric ions and the orientation of Titan's dayside ionosphere with respect to the corotating magnetospheric plasma flow.

Three-dimensional analysis of ion optics with misalignments of apertures

Vacuum ◽  
2016 ◽  
Vol 123 ◽  
pp. 140-150 ◽  
Author(s):  
Andrey Shagayda ◽  
Vladimir Nikitin ◽  
Dmitry Tomilin
Keyword(s):  
Dimensional Analysis ◽  
Three Dimensional ◽  
Ion Optics

scholarly journals Bifurcation and hysteresis of the magnetospheric structure with a varying southward IMF: Field topology and global three-dimensional full particle simulations

2009 ◽  
Vol 114 (A12) ◽  
pp. n/a-n/a ◽  
Author(s):  
DongSheng Cai ◽  
Weifeng Tao ◽  
Xiaoyang Yan ◽  
Bertrand Lembege ◽  
Ken-Ichi Nishikawa
Keyword(s):  
Three Dimensional ◽  
Particle Simulations
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