Premium
Investigation of Oscillations in the Plasma Sheath
Author(s) -
Brida D.,
Tskhakaya D.
Publication year - 2014
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201410038
Subject(s) - plasma , physics , oscillation (cell signaling) , plasma oscillation , atomic physics , amplitude , resonance (particle physics) , computational physics , particle in cell , electron , plasma parameters , optics , quantum mechanics , genetics , biology
In this work different plasma oscillation modes in the plasma sheath (PS) have been identified. For this pur‐pose an electron‐deuterium plasma under different conditions was considered. The plasma was simulated with the fully kinetic massively parallel Particle‐in‐Cell/Monte Carlo code BIT1 [1]. In order to exclude possible artificial boundary effects we simulated a sufficiently large area (10 ‐ 50 cm), so that the PS in the simulation develops fully self‐consistently. Our simulations show that each point in the PS oscillates with a significantly broad frequency spectrum. The largest oscillation amplitudes have the waves which are in resonance with the local plasma frequency for unmagnetized, and with the upper and lower hybrid frequencies for magnetized plasmas. In addition each point exhibits oscillations at resonance frequencies corresponding to other points in the PS. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)