Comments on Structure of the plasma sheath in collisional to weakly collisional plasmas'' (Phys. Fluids B 2, 647 (1990))

Journal Article · Wed May 01 04:00:00 EDT 1991 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859823· OSTI ID:5847158

Riemann, K; van den Berg, H ^[1]

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1. Institut fuer Theoretische Physik I, Ruhr-Universitaet Bochum, 4630 Bochum, Germany (DE)

Recently, Zawaideh {ital et} {ital al}. published a paper (Phys. Fluids B {bold 2}, 647 (1990)) asserting that they had obtained, from a more accurate set of fluid equations, physically reasonable plasma sheath solutions of an oscillating nature violating Bohm's criterion. In contrast to this statement, it is shown here that the violation of Bohm's criterion is based on an incorrect interpretation of the plasma sheath concept and that the oscillations are due to an incorrect initial condition in the calculations.

• OSTI ID: 5847158
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 3:5; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOHM CRITERION
COLLISIONAL PLASMA
DIFFERENTIAL EQUATIONS
ENERGY CONSERVATION
EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA SHEATH
POISSON EQUATION