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Interplay between long and short wavelength instabilities feeding the microturbulence within the foot of a quasi-perpendicular supercritical shock: 2D PIC numerical simulations

Abstract : In supercritical shocks a substantial fraction of ions is reflected at the steep shock ramp. The beam of reflected ions carries a considerable amount of energy and is a main source of microturbulence in the shock’s foot. For quasi- perpendicular geometries the speed of the reflected ions is mostly directed at 90◦ to the background magnetic field Bo. This enables streaming instabilities excited by the relative drifts between incoming ions, reflected ions, and electrons across Bo.
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Submitted on : Friday, March 4, 2022 - 5:27:42 PM
Last modification on : Sunday, March 6, 2022 - 3:20:08 AM

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  • HAL Id : insu-03598257, version 1

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Laurent Muschietti, Bertrand Lembège, V. Decyk. Interplay between long and short wavelength instabilities feeding the microturbulence within the foot of a quasi-perpendicular supercritical shock: 2D PIC numerical simulations. URSI GASS 2021. Proceedings, Aug 2021, Rome, Italy. ⟨insu-03598257⟩

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