The plasma exit flow speed at the sheath entrance is constrained by the Bohm criterion. The
so-called Bohm speed regulates the plasma particle and power exhaust fluxes to the wall …

Electron sheaths are commonly found near Langmuir probes collecting the electron
saturation current. The common assumption is that the probe collects the random flux of …

This paper describes the verification and validation (V&V) framework developed for the
stochastic Particle-in-Cell, Direct Simulation Monte Carlo code Aleph. An ideal framework for …

In this paper, the incorporation of auxiliary grids/electrodes into the design of the sputtering
method is scrutinized by studying the impact of factors such as grid size, grid position, grid …

Langmuir probe diagnostic in a multi-dipole confined hot cathode discharge has been
revisited with an improved sheath expansion model with fitted expansion parameters. The …

We present high-order accuracy simulations of the plasma-sheath transition with an ion–
electron multi-fluid model that considers the electron inertial terms and the ion pressure …

A model that uniquely determines the flow speed of each ion species at the sheath edge of
two ion species plasmas is developed. In this analysis, ion-ion two-stream instabilities can …

Particle-in-cell simulations are used to study how neutral pressure influences plasma
properties at the sheath edge. The high rate of ion–neutral collisions at pressures above …

A recent theory suggests that electrons enter electron sheaths at an electron Bohm velocity
given by (T e/me) 1/2 instead of the electron thermal velocity as conventionally assumed. To …

The effects of ion collisions on plasma–sheath formation are investigated experimentally for
a low-density and low-pressure discharge. The space potential and ion velocity distribution …