5 papers
Preferential acceleration of positrons by a filamentation instability between an electron-proton beam and a pair plasma beam
M E Dieckmann, S J Spencer, M Falk +1
Particle-in-cell (PIC) simulations of collisionless jets of electrons and positrons in an ambient electron-proton plasma have revealed an acceleration of positrons at the expense o…
Structure of a collisionless pair jet in a magnetized electron-proton plasma: Flow-aligned magnetic field
Mark Eric Dieckmann, Martin Falk, Peter Steneteg +6
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 la…
Structure of a collisionless pair jet in a magnetized electron-proton plasma: flow-aligned magnetic field
M E Dieckmann, D Folini, I Hotz +4
We study the effect a guiding magnetic field has on the formation and structure of a pair jet that propagates through a collisionless electron-proton plasma at rest. We model with…
Expansion of a radially symmetric blast shell into a uniformly magnetized plasma
M E Dieckmann, Q Moreno, D Doria +7
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…
Electrostatic and magnetic instabilities in the transition layer of a collisionless weakly relativistic pair shock
M E Dieckmann, A Bret
Energetic electromagnetic emissions by astrophysical jets like those that are launched during the collapse of a massive star and trigger gamma-ray bursts (GRBs) are partially attri…