The electron acceleration, in a laser wakefield accelerator, controlled through plasma density inhomogeneity is studied on basis of 2.5-dimensional particle-in-cell simulation. acceleration requires concordance the scale length and shift accelerated bunch relative to wake bubble during acceleration. This paper considers excitation with equal free electrons metals, solid-state (the original idea...

Two-dimensional hybrid simulations of super-Alfvénic expanding debris plasma interacting with an inhomogeneous ambient plasma are presented. The simulations demonstrate improved collisionless coupling of energy to the ambient ions when encountering a density gradient. Simulations of an expanding cylinder running into a step function gradient are performed and compared to a simple analytical the...

The Boltzmann equation describes the evolution of phase-space probability distribution classical particles under binary collisions. Approximations to it underlie basis for several scholarly fields, including aerodynamics and plasma physics. While these approximations are appropriate in their respective domains, they can be violated niche but diverse applications which require direct numerical s...

It is shown that inhomogeneous heating of the dust grain by ion flow in a glow discharge results in a photophoresislike force. According to our estimations, this radiometric force can be comparably-valued with the ion-drag force under the conditions of microgravity dusty plasma experiments.

An IR grating on a clean W(100) surface is shown to generate both homogeneous and inhomogeneous surface electromagnetic waves. An observed interference between these two components, which can be described in terms of a two-beam interferometer with variable arm amplitude and fixed optical path, is used to measure the plasma frequency accurately in the IR.

Theoretical calculations of a Thomson scattering cross section and dynamical form factors are presented for high-Z laser produced inhomogeneous plasmas. Relevance of these results to astrophysical plasmas is pointed out. Comparisons with recent experimental observations are discussed with emphasis on the effects of plasma inhomogeneity, ion-ion collisions and non-Maxwellian distribution functio...

Numerical modeling of propagation and absorption fast waves (helicons) with frequency 200MHz in 2D inhomogeneous plasma the spherical tokamak Globus-M2 was carried out full-wave code. Toroidal effects, poloidal magnetic field actual shape flux surfaces were taken into account. The full wave electric RF power profiles computed by solving equation electron Landau damping term. demonstrated a fair...

Investigations of atomic-layer deposition GaP layers on Si substrates with different orientations and preliminary surface treatment have been carried out. The was out by the method plasma enhanced using in situ argon plasma. It shown that at initial stage growth precisely oriented (100) misorientation, two-dimensional occurs both after chemical treatment. Upon (111) substrates, surface, a trans...