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Ion reflection by shock waves and pulse generation by cross-field ion beams

Part of: Solved and Unsolved problems in Plasma Physics

Published online by Cambridge University Press:  04 January 2017

Yukiharu Ohsawa
Yukiharu Ohsawa*
Affiliation:
Department of Physics, Nagoya University, Nagoya 464-8602, Japan
*
†Email address for correspondence: [email protected]
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Abstract

Comparisons are made of two different particle simulations: one for the study of plasma-based accelerators (Gueroult & Fisch, Phys. Plasmas, vol. 23, 2016, 032113) and the other for the study of shock formation in the interstellar medium (Yamauchi & Ohsawa, Phys. Plasmas, vol. 14, 2007, 053110). In the former, shock waves used for plasma density control create ion beams by reflection. In the latter, a fast and dense beam of exploding ions penetrates a surrounding plasma. In both simulations, magnetic bumps are generated from the motion of ion beams perpendicular to a magnetic field. Despite the apparent differences of their purposes, configurations and spatial scales, the two simulations show strong similarities in the generation processes and effects of the bumps, suggesting that these are not rare plasma phenomena. The bump created by the exploding ions develops into backward and forward magnetosonic pulses.

Keywords

plasma nonlinear phenomena
Type
Research Article
Information
Journal of Plasma Physics , Volume 83 , Issue 1 , February 2017 , 595830101
Copyright
© Cambridge University Press 2017 

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