A dynamic analysis of the magnetized plasma sheath in a collisionless scenario with ion sources

Abstract

In this paper, the central concern is to analyze the influence of the forces that controls the ion dynamics inside a magnetized plasma sheath under collisionless conditions. The ionization effects are considered within the sheath. The magnetic field is tilted in x-z plane and makes an angle with the x-axis. The motivation of the paper is to see the effect of both field strength variation and the variation of the inclination angle on the force fields inside the sheath. The pitch length and pitch angle for the particle velocity field is also calculated and has been found to vary widely with the inclination angle and the strength of the magnetic field. The role of the Lorentz force and energy acquired by the ions while moving towards the wall is highlighted. A comparison between two different ion sources has also been foregrounded.

Effect of collisions on the plasma sheath in the presence of an inhomogeneous magnetic field

“…In the theoretical model, it is assumed that the z-axis is perpendicular to the wall and the sheath parameters, such as plasma density, potential, electric field, etc. are varying along z-axis [9,14,17]. The magnetic field is taken along the x-axis, and there is a spatial variation of the magnetic field along the system length, which increases linearly towards the wall.…”

Sheath properties in active magnetized multi-component plasmas

“…For example, Gyergyek and Kovacic 17 have studied the plasma-wall transition problem in a magnetized electropositive plasma by considering elastic collisions between ions and electrons, and creation/ annihilation of charged particles. Also, Adhikari et al 18 have analyzed the influence of the forces that control the ion dynamics inside a magnetized electropositive plasma sheath under collisionless conditions. Furthermore, a criterion of sheath formation has been obtained by Moulick et al 19 for magnetized low pressure electropositive plasmas including the effect of collision and ionization.…”

“…In the present paper, we extend the results of the previous works (for example, Refs. 11,[18][19][20][25][26][27][28][29][30] ) to include an oblique external magnetic field, ion-neutral collision and electron impact ionization as well as multi-charged positive and negative ion species and find analytically the sheath formation criterion in a magnetized multicomponent plasma with ion source term (active plasma) consisting of multi-charged positive and negative ion species. In order to do this, we use a fluid model of plasma and analyze the Sagdeev potential.…”

Effect of Ion Temperature Variation in Two-Ion Species Magnetized Plasma Sheath

“…Closing to the wall is the usual electrostatic sheath, also known as the Debye sheath and the magnetic presheath, known as the Chodura sheath near the plasma boundary. Various approaches have been proposed to explain the properties of plasma sheath and are still a subjected of interest [2][3][4][5][6][7][8][9][10][11].…”

“…In this work we use KTS (kinetic trajectory simulation) model [10] to study the effect of ion temperature variation in a magnetized plasma sheath consisting of two-species of positive ions. The motivation for the present work was triggered by similar works based on the fluid approaches [1,8,11]. This paper is organized as follows: In Sec.…”