Sheath thickness evaluation for collisionless or weakly collisional bounded plasmas
نویسندگان
چکیده
منابع مشابه
Plasma-wall transition in weakly collisional plasmas
This paper reviews some theoretical and computational aspects of plasma-wall interactions, in particidar the formation of sheaths. Some fundamental residts are derived analytically using a simple fluid model, and are subsequently tested with kinetic simulations. The various regions composing the plasma-wall transition (Debye sheath, colUsional and magnetic presheaths) are discussed in details.
متن کاملDust grain charging and levitation in a weakly collisional sheath
An experiment is described in which monodisperse dust grains are levitated within a dc sheath above a conducting plate in argon plasma. For plate bias voltages that are not too negative ~>210 electron temperatures!, the observed dust levitation heights are near to values calculated from a model combining equations for the sheath with those for grain charging. When the plate is more negatively b...
متن کاملExact Steady State Reconnection Solutions in Weakly Collisional Plasmas
We consider the problem of reconnection in weakly collisional plasmas in the strong guide field limit. In this regime the standard resistive Ohm’s law is modified to include electron compressibility and electron inertia effects. Despite the increased complexity of the governing equations, we show that analytic steady state solutions, like those discovered by Craig and Henton for the purely resi...
متن کاملMagnetic reconnection in weakly collisional highly magnetized electron-ion plasmas
A reduced three-field model of two-dimensional magnetic reconnection in a weakly collisional, highly magnetized plasma consisting of isothermal electrons and cold ions is derived from a set of Braginskii-like fluid equations. The model is then used to calculate the linear growth rate of the reconnecting instability in collisionless and semicollisional parameter regimes. © 2010 American Institut...
متن کاملNumerical simulation of plasma-wall interactions in weakly collisional plasmas
Eulerian Vlasov codes, which solve the kinetic equation on a fixed phase-space grid, have become increasingly popular in the fusion plasma physics community. Their main advantage is the lack of random statistical noise inherent to particle-in-cell (PIC) calculations. Although they do require a somewhat larger computational effort compared to their PIC counterparts, Eulerian codes are now able t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Plasma Science
سال: 1999
ISSN: 0093-3813
DOI: 10.1109/27.799813