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 …

Kinetic theory of the presheath and the Bohm criterion

SD Baalrud, CC Hegna - Plasma Sources Science and …, 2011 - iopscience.iop.org
A kinetic theory of the Bohm criterion is developed that is based on positive-exponent
velocity moments of the plasma kinetic equation. This result is contrasted with the …

Temperature gradients due to adiabatic plasma expansion in a magnetic nozzle

JP Sheehan, BW Longmier, EA Bering… - Plasma Sources …, 2014 - iopscience.iop.org
A mechanism for ambipolar ion acceleration in a magnetic nozzle is proposed. The plasma
is adiabatic (ie, does not exchange energy with its surroundings) in the diverging section of …

Power law fitting of the ion saturation current and the three-temperature Maxwellian EEDF in a multi-dipole confined hot cathode discharge: an experimental …

CS Yip, C Jin, W Zhang, D Jiang… - Plasma Sources Science …, 2022 - iopscience.iop.org
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 …

Collisional behaviors of astrophysical collisionless plasmas

A Bret - Journal of Plasma Physics, 2015 - cambridge.org
In collisional fluids, a number of key processes rely on the frequency of binary collisions.
Collisions seem necessary to generate a shock wave when two fluids collide fast enough, to …

Cross-field diffusion in low-temperature plasma discharges of finite length

D Curreli, FF Chen - Plasma Sources Science and Technology, 2014 - iopscience.iop.org
The long-standing problem of plasma diffusion across a magnetic field (B-field) is reviewed,
with emphasis on low-temperature linear devices of finite length with the magnetic field …

Nonrelativistic perpendicular shocks modeling young supernova remnants: nonstationary dynamics and particle acceleration at forward and reverse shocks

V Wieland, M Pohl, J Niemiec, I Rafighi… - The Astrophysical …, 2016 - iopscience.iop.org
For parameters that are applicable to the conditions at young supernova remnants, we
present results of two-dimensional, three-vector (2D3V) particle-in-cell simulations of a non …

Direct measurement of ion and electron flux ratio at their respective sheath-edges and absence of the electron Bohm criterion effects

C Jin, CS Yip, W Zhang, D Jiang… - Plasma Sources Science …, 2022 - iopscience.iop.org
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 …

Collisionless relaxation of downstream ion distributions in low-Mach number shocks

M Gedalin, Y Friedman, M Balikhin - Physics of Plasmas, 2015 - pubs.aip.org
Collisionlessly formed downstream distributions of ions in low-Mach number shocks are
studied. General expressions for the asymptotic value of the ion density and pressure are …

Langmuir probe measurements of the secondary electron population across the cathodic pre-sheath of a DC argon discharge

N Ranson, R Bowden-Reid, J Khachan, N Claire - Physics of Plasmas, 2023 - pubs.aip.org
Cylindrical Langmuir probe measurements in a low-pressure DC argon discharge are used
to obtain the spatial evolution of ion, cold and hot electron parameters across the cathodic …