Articles you may be interested in Effect of two-temperature electrons distribution on an electrostatic plasma sheath The positive ion temperature effect in magnetized electronegative plasma sheath with two species of positive ions Phys. Effect of electron temperature on dynamic characteristics of two-dimensional sheath in Hall thrusters Self-consistent dusty sheaths in plasmas with two-temperat...

The key parameter driving behavior of dust particles in plasma is their electric charge [1]. Present-day theories as well as experiments are not fully successful in determining its value [2]. Moreover, the theoretical uncertainties are increased in the plasma sheath – a think plasma layer at a wall or electrode. The standard models of dust charging in the plasma sheath usually suppose Maxwellia...

A fast two-dimensional (2D) hybrid fluid-analytical transform coupled plasma reactor model was developed using the finite elements simulation tool COMSOL. Both inductive and capacitive coupling of the source coils to the plasma are included in the model, as well as a capacitive bias option for the wafer electrode. A bulk fluid plasma model, which solves the time-dependent plasma fluid equations...

In high plasma density ~[e].10– 10 cm! reactors for materials processing, the sheath thickness is often ,100 s mm while the reactor dimensions are 10 s cm. Resolving the sheath in computer models of these devices using reasonable grid resolution is therefore problematic. If the sheath is not resolved, the plasma potential and stochastic electron heating produced by the substrate bias may not be...

The present work develops a computationally efficient one-dimensional subgrid embedded finite element formulation for plasma-sheath dynamics. The model incorporates space-charge effect throughout the whole plasma and the sheath region using multifluid equations. Secondary electron emission is not considered. A third-order temperature dependent polynomial is used to self-consistently calculate t...

A mathematical model is formulated to catch the dynamics hidden in the plasma-sheath transition layer and the inner sheath layer for planar motion of a plasma. It is shown that the rescaled potential in the plasma-sheath transition layer and inner layer is governed by a perturbed KdV equation, through which some of the complex interactions and couplings among physical mechanisms acting in the p...

Most works on plasma-wall interaction predict that with strong electron emission, a nonmonotonic "space-charge-limited" (SCL) sheath forms where the plasma potential is positive relative to the wall. We show that a fundamentally different sheath structure is possible where the potential monotonically increases toward a positively charged wall that is shielded by a single layer of negative charg...

Related Articles Experimental investigation of virtual cathode sheath in the presence of secondary electrons produced by streaming ions Phys. Plasmas 19, 113511 (2012) Valid flow combinations for stable sheath in a magnetized multiple ion species plasma Phys. Plasmas 19, 113507 (2012) Properties of a warm plasma collisional sheath in an oblique magnetic field Phys. Plasmas 19, 113504 (2012) Inv...

Based on self-consistent modelling of the radio-frequency sheath parameters, such as ion and electron densities velocity, dust particle charging process in an RF is investigated by employing kappa $(\kappa )$ distribution for electrons. It shown that charge number decreases near sheath–wall interface while it shows opposite tendency plasma-sheath edge, $\kappa$ value decreased. The fluctuation ...