Study of magnetized multi-component plasma sheath containing charged dust particles in presence of oblique magnetic field: a fluid approach

Abstract

The dynamics of low temperature magnetized multi-component dusty plasma sheath structure has been investigated with finite ion temperature taking into account in presence of an oblique magnetic field using the multi-fluid model. The parametric changes inside the sheath are estimated in presence of charged dust species having nano-meter (nm) size range. In the presence of charged dust inside the sheath, the ions get accumulated near the sheath edge, and hence the ion density is decreased towards the wall. Further, with the increase in magnetic field strength, the peaking of ion densities near the sheath edge has been found to be intensified. The magnetic field orientation has also played a vital role in the bunching of the ions near the sheath edge and an increase in the magnetic field obliqueness has also contributed to intensifying the ion bunching. It has also been observed that the sheath potential is substantially changed in presence of charged dust species. In addition, we also investigated and presented the influence of dust species presence on the electron density inside the sheath. A qualitative explanation of all the phenomenon that occurs due to dust species has been presented in the manuscript.

Magnetized multi-component plasmas sheath characteristics with three isothermal ion species

“…In our study, the neutral particles are treated as motionless in comparison with ions and electrons as they are in room temperature. However, they move Brownian hence their relative motion with the charges species may be neglected [13]. The Ar Kr Xe , , and…”

“…Further, in low-density and low-temperature plasmas, collisional effects in sheath properties [10][11][12] are also investigated. Moving beyond classical plasmas, sheath dynamics in dusty plasmas have also been studied in the presence and absence of external magnetic field lines [13][14][15][16][17][18][19]. However, in such plasmas presence of dust and dust charging mostly governs the sheath properties rather than only due to the plasma ions because of former's larger mass compared to the plasma ions and localized electron charge sphere formation.…”