By using a kinetic particle-in-cell simulation and point-rendering visualisation techniques, we investigate a two-stream plasma instability possibly found in the accretion disc of black holes. We consider a plasma in an oblique magnetic field. The instability gives rise to an electrostatic wave able to trap electrons and accelerate them by cross-field transport. Our results show a peak accelera...

The Jeans instability of infinite homogeneous, self-gravitating quantum plasma is investigated under the assumption of optically thick medium and black body radiation. The general dispersion relation is obtained and the condition of instability is discussed.

One of shortcomings of the dielectric wakefield accelerators (DWA) limiting the effective length of an acceleration is susceptibility of drive bunches to beam breakup (BBU) instability [1]. With the purpose to suppress this instability recently it has been proposed to fill the drift channel of dielectric structure with plasma of certain density [2]. The investigations of plasma DWA (PDWA) [2] w...

In the Plasma Beat Wave Accelerator, acceleration is achieved by a longitudinal electrostatic field produced as a result of charge separation generated by a plasma wave traveling close to the speed of light. The plasma wave in turn is produced by two colinear laser pulses whose amplitude is modulated so that the beat frequency matches the plasma frequency. Optical mixing and Raman forward scatt...

Density filamentation has been observed in many beam-plasma simulations and experiments. Because current is a pure transverse mode, charge density cannot be produced directly by the process. To explain this phenomenon, several mechanisms are proposed such as coupling of Weibel instability to two-stream instability, Langmuir wave, differences thermal velocities between beam return currents, magn...

The Weibel instability due to temperature anisotropy of electrons and ions in a plasma the presence cold warm is reported. Numerical calculations normalized growth rate are carried out when frequency electromagnetic waves greater than or less thermal velocity for typical existing parameters. increases with an increasing wave number, after attaining maxima, it decreases effects. Therefore, parab...