Elastic and inelastic particles scattering by dust acoustic soliton. A new oscillatory process in dusty plasma

Abstract

The parameters of scattering (reflection) of charged particles by the leading edge of a dust acoustic soliton are analyzed. The soliton profile is calculated using the Sagdeev pseudopotential approach. To analyze the motion of charged particles, the Newton’s second law is used. It is shown theoretically that the charged particle scattering can be elastic and inelastic. The nature of scattering significantly depends on the presence of dissipation. In the dissipative case, charged particles scattering is the process of an oscillatory nature. It is shown that it can be considered as a new type of oscillations of charged particles in plasma. The parameters of the oscillations are calculated both numerically (nonlinear case) and analytically (within the linear approximation). Theoretical results are compared with known experimental results, as well as the applied aspect is stated.

Effect of Laser Radiation on the Dynamics of Active Brownian Macroparticles in an Extended Plasma-Dust Monolayer

“…Then, the movement of each individual particle will largely depend on the interaction with neighboring particles and on external conditions. The strong interaction of particles is due to the presence of an electric charge on them and the properties of the surrounding nonequilibrium low-pressure gas discharge plasma [1][2][3][4][5][6][7][8][9][10][11]. The model assumes that the particles have the same size and composition and are uniformly covered with a thin metal film capable of absorbing laser radiation.…”

“…A dusty plasma monolayer is an actively investigated physical object with a number of unique properties [1][2][3][4][5][6][7][8][9][10][11]. The kinetic temperature of the macroparticles in the dusty plasma monolayer is much higher than the temperature of the surrounding heavy particles (neutrals and plasma ions) [6].…”