Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Dieckmann, Mark"'
Autor:
Dieckmann, Mark Eric
We study with a one-dimensional particle-in-cell (PIC) simulation the expansion of a pair cloud into a magnetized electron-proton plasma as well as the formation and subsequent propagation of a tangential discontinuity that separates both plasmas. It
Externí odkaz:
http://arxiv.org/abs/2002.07465
Autor:
Dieckmann, Mark Eric, Falk, Martin, Steneteg, Peter, Folini, Doris, Hotz, Ingrid, Nordman, Aida, Dell'Acqua, Pierangelo, Ynnerman, Anders, Walder, Rolf
We present the results from a particle-in-cell (PIC) simulation that models the interaction between a spatially localized electron-positron cloud and an electron-ion plasma. The latter is permeated by a magnetic field that is initially spatially unif
Externí odkaz:
http://arxiv.org/abs/2001.09457
Autor:
Moreno, Quentin, Dieckmann, Mark Eric, Ribeyre, Xavier, Jequier, Sophie, Tikhonchuk, Vladimir, d'Humières, Emmanuel
The evolution of the Buneman and two-stream instabilities driven by a cold dilute mildly relativistic electron beam is studied as a function of the ion\'\s charge-to-mass ratio. The growth rates of both instabilities are comparable for the selected p
Externí odkaz:
http://arxiv.org/abs/1803.02190
Autor:
Bret, Antoine, Dieckmann, Mark Eric
The hierarchy of unstable modes when two counter-streaming pair plasmas interact over a flow-aligned magnetic field has been recently investigated [PoP \textbf{23}, 062122 (2016)]. The analysis is here extended to the case of an arbitrarily tilted ma
Externí odkaz:
http://arxiv.org/abs/1705.07974
Autor:
Dieckmann, Mark Eric, Bret, Antoine
We examine with a particle-in-cell (PIC) simulation the collision of two equally dense clouds of cold pair plasma. The clouds interpenetrate until instabilities set in, which heat up the plasma and trigger the formation of a pair of shocks. The faste
Externí odkaz:
http://arxiv.org/abs/1701.04075
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 465, 4240-4248, 2016
The nonlinear thin-shell instability (NTSI) may explain some of the turbulent hydrodynamic structures that are observed close to the collision boundary of energetic astrophysical outflows. It develops in nonplanar shells that are bounded on either si
Externí odkaz:
http://arxiv.org/abs/1701.04051
The manuscript discusses a simple model on the Thin Shell Instability (TSI) growth phenomenon at early stage, by only imposing the fulfillment of conservation laws; and in particular just applying the laws of mass and linear momentum conservation, wi
Externí odkaz:
http://arxiv.org/abs/1611.04454
Publikováno v:
Physics of Plasmas, 23, 062111, 2016
The expansion of a magnetized high-pressure plasma into a low-pressure ambient medium is examined with particle-in-cell (PIC) simulations. The magnetic field points perpendicularly to the plasma's expansion direction and binary collisions between par
Externí odkaz:
http://arxiv.org/abs/1609.03418
The evolution of a slow electrostatic shock into a plasma shock mediated by electrostatic turbulence
The collision of two plasma clouds at a speed that exceeds the ion acoustic speed can result in the formation of shocks. This phenomenon is observed not only in astrophysical scenarios such as the propagation of supernova remnant (SNR) blast shells i
Externí odkaz:
http://arxiv.org/abs/1405.5983
The formation of unmagnetized electrostatic shock-like structures with a high Mach number is examined with one- and two-dimensional particle-in-cell (PIC) simulations. The structures are generated through the collision of two identical plasma clouds,
Externí odkaz:
http://arxiv.org/abs/1310.1740