Variation of mean value of velocity of ion with different obliqueness of magnetized plasma sheath

Abstract

Plasma sheath, which forms between a material wall and incoming plasma, plays an important role in controlling particle and energy fluxes to the wall. The problem of plasma sheath is one of the oldest in plasma and still draws attention, especially in magnetized plasmas. In this work velocity of ions in a magnetized plasma sheath has been studied using a kinetic trajectory simulation model for varying obliqueness of the field. Any change in obliqueness of the field causes the velocities to change. The change in mean value of the component normal to the wall is comparatively small whereas the other two components of velocity vary sinusoidally, nearly complementary to each other with nearly equal amplitudes.

Mean value and velocity variation of ions in different magnetic field at constant obliqueness

“…Average value variation of different components of velocity of ions for different magnetic fields is a recent field of research in plasma physics [1][2][3][4]. Now a day, the sheath formed between magnetic plasma and a particleabsorbing wall has received significant attention [5][6][7][8][9][10] . As the plasma is confined to any closed surface, plasma interacts with the material surfaces, which is crucial in all plasma applications.…”

“…As the plasma is confined to any closed surface, plasma interacts with the material surfaces, which is crucial in all plasma applications. Hence, properly understanding this interaction with the material surface is important in all plasma applications [7]. If the plasma-wall interaction is well understood, it will be possible to control heat loading, energy transfer, and particle flow toward the wall and the overall behavior of plasma [3,4].…”

“…This study is very important in magnetized plasma sheaths to see the change in particle wall interaction and particle dynamics. Plasma sheath significantly influences the charged particles and the energy flux to the wall, which modifies the absorption, emission of impurities, and all other characteristics in the plasma [7]. The Kinetic Trajectory Simulation (KTS) model [10][11][12][13] has been used to obtain a solution to a non-neutral, timeindependent, collisionless plasma sheath.…”