Interaction of biased electrodes and plasmas: sheaths, double layers, and fireballs

SD Baalrud, B Scheiner, BT Yee… - Plasma Sources …, 2020 - iopscience.iop.org
Biased electrodes are common components of plasma sources and diagnostics. The plasma–
electrode interaction is mediated by an intervening sheath structure that influences …

Equilibrium states of anodic double layers

SD Baalrud, B Longmier… - Plasma Sources Science …, 2009 - iopscience.iop.org
Equilibrium states of anodic double layers that form near a positively biased disk-shaped
electrode immersed in a partially ionized plasma are studied experimentally using …

Dynamics of fireballs

RL Stenzel, C Ionita… - Plasma Sources Science …, 2008 - iopscience.iop.org
Fireballs are discharge phenomena on positively biased small electrodes in plasmas. The
discharge arises from electron energization at a double layer. Fireballs can collect relatively …

On the interaction between two fireballs in low-temperature plasma

DG Dimitriu, SA Irimiciuc, S Popescu, M Agop… - Physics of …, 2015 - pubs.aip.org
We report experimental results and theoretical modeling showing the interaction between
two fireballs excited on two positively biased electrodes immersed in a low-temperature …

Experimental and theoretical investigations of a plasma fireball dynamics

O Niculescu, DG Dimitriu, VP Paun, PD Matasaru… - Physics of …, 2010 - pubs.aip.org
Periodic current bursts observed in the dynamic current-voltage characteristic of a probe in
the presence of a plasma fireball in dynamic state were modeled in the frame of the scale …

Transit time instabilities in an inverted fireball. I. Basic properties

RL Stenzel, J Gruenwald, B Fonda, C Ionita… - Physics of …, 2011 - pubs.aip.org
A new fireball configuration has been developed which produces vircator-like instabilities.
Electrons are injected through a transparent anode into a spherical plasma volume. Strong …

Transit time instabilities in an inverted fireball. II. Mode jumping and nonlinearities

RL Stenzel, J Gruenwald, B Fonda, C Ionita… - Physics of …, 2011 - pubs.aip.org
A fireball is formed inside a highly transparent spherical grid immersed in a dc discharge
plasma. The ambient plasma acts as a cathode and the positively biased grid as an anode …

Pulsed, unstable and magnetized fireballs

RL Stenzel, J Gruenwald, C Ionita… - … Sources Science and …, 2012 - iopscience.iop.org
Fireballs are luminous regions produced by double layers in front of positively biased
electrodes in plasmas. Although fireballs have been investigated previously there are a …

Droplet shaped anode double layer and electron sheath formation in magnetically constricted anode

S Chauhan, M Ranjan, M Bandyopadhyay… - Physics of …, 2016 - pubs.aip.org
Anode double layer and droplet shaped fireball are found in a magnetically constricted
anode. The disc shaped anode is constricted using permanent magnets. The device has …

Pulsating fireballs with high-frequency sheath–plasma instabilities

RL Stenzel, J Gruenwald, C Ionita… - … Sources Science and …, 2011 - iopscience.iop.org
High-frequency instabilities are observed in connection with unstable fireballs. Fireballs are
discharge phenomena near positively biased electrodes in discharge plasmas. They are …