Open AccessParticle-in-cell simulations of an inverted sheath
Author(s) -
Isabel Fernández Gómez,
A. Valič,
T. Gyergyek,
S. Costea,
J. Kovačič
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1492/1/012004
Subject(s) - electrode , electron , particle in cell , ionization , ion , atomic physics , plasma , particle (ecology) , materials science , work (physics) , debye sheath , secondary electrons , molecular physics , physics , nuclear physics , oceanography , quantum mechanics , thermodynamics , geology
An inverted sheath is simulated by particle-in-cell simulations using the XPDP1 code. It is shown that a stable monotonically decreasing potential structure can be formed in a bounded plasma system, where positive ions and source electrons are injected from the right-hand side (source) electrode and emitted electrons are injected from the left-hand side (collector) electrode. Such inverted sheath structure is created in the absence of collisions or ionization, provided that the ratio of injection fluxes of both electron groups is large enough. In this work preliminary results are reported and some effects of different ion injection are illustrated.