%0 Journal Article %T Expansion of a radially symmetric blast shell into a uniformly magnetized plasma %+ Centre de Recherche Astrophysique de Lyon (CRAL) %A Dieckmann, M. E. %A Moreno, Q. %A Doria, D. %A Romagnani, L. %A Sarri, G. %A Folini, D. %A Walder, R. %A Bret, A. %A d'Humières, E. %A Borghesi, M. %< avec comité de lecture %@ 1070-664X %J Physics of Plasmas %I American Institute of Physics %V 25 %8 2018 %D 2018 %Z 1805.02875 %Z 2018PhPl...25e2108D %R 10.1063/1.5024851 %K Physics - Plasma Physics %Z Sciences of the Universe [physics]Journal articles %X The expansion of a thermal pressure-driven radial blast shell into a dilute ambient plasma is examined with two-dimensional PIC simulations. The purpose is to determine if laminar shocks form in a collisionless plasma which resemble their magnetohydrodynamic counterparts. The ambient plasma is composed of electrons with the temperature of 2 keV and cool fully ionized nitrogen ions. It is permeated by a spatially uniform magnetic field. A forward shock forms between the shocked ambient medium and the pristine ambient medium, which changes from an ion acoustic one through a slow magnetosonic one to a fast magnetosonic shock with increasing shock propagation angles relative to the magnetic field. The slow magnetosonic shock that propagates obliquely to the magnetic field changes into a tangential discontinuity for a perpendicular propagation direction, which is in line with the magnetohydrodynamic model. The expulsion of the magnetic field by the expanding blast shell triggers an electron-cyclotron drift instability. %G English %L insu-03711227 %U https://insu.hal.science/insu-03711227 %~ ENS-LYON %~ INSU %~ CNRS %~ UNIV-LYON1 %~ CRAL %~ UDL %~ UNIV-LYON