A two-dimensional numerical study of the expansion of a dense plasma through a more rarefied one is reported. The electrostatic ion-acoustic shock, which is generated during the expansion, accelerates the electrons of the rarefied plasma inducing a superthermal population which reduces electron thermal anisotropy. The Weibel instability is therefore not triggered and no self-generated magnetic fields are observed, in contrast with published theoretical results dealing with plasma expansion into vacuum.
|Title of host publication||EAS Publications Series|
|Number of pages||4|
|Publication status||Published - 01 Jan 2012|
Sarri, G., Dieckmann, M. E., Kourakis, I., & Borghesi, M. (2012). Magnetic field suppression in collision-less shocks generated during the expansion of a dense plasma into a rarefied medium. In EAS Publications Series (Vol. 58, pp. 33-36) https://doi.org/10.1051/eas/1258004