THEORY OF AN ELECTROSTATIC PROBE IN A STRONG MAGNETIC FIELD. PART II

Journal Article · Wed Aug 01 04:00:00 EDT 1962 · Physics of Fluids (U.S.)

DOI:https://doi.org/10.1063/1.1706698· OSTI ID:4790989

Bertotti, B

S>A probe is considered in a magnetic field so strong as to impair collective transverse drifts. In this case, the charges sipplied to the probe come mainly from a long tube of force whose radius is about one Larmor radius larger than the probe. It is assumed that there is acting a diffusion process, more efficient than ordinary drifts, which continuously exchanges particles between the inside of the tube of force and the rest of the plasma. A one- dimensional model of this process, leading to an integro-differential Poisson's equation, is investigated in the case of slow diffusion. The solution consists of a chargeless, slowly decaying potential, which describes the geometrical screening effect of the probe; while in the sheath an approximate boundary-layer solution matches with the probe's potential V/sub p/. The asymptotic relation between the current collected and V/sub p/ is computed. This model may be suited to the case of diffusion caused by random wave fields. (auth)

• Research Organization: Princeton Univ., N.J.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-000976
• OSTI ID: 4790989
• Journal Information: Physics of Fluids (U.S.), Journal Name: Physics of Fluids (U.S.) Vol. Vol: 5; ISSN PFLDA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHARGED PARTICLES
CONFIGURATION
CURRENTS
DIFFERENTIAL EQUATIONS
DIFFUSION
EFFICIENCY
ELECTRIC CHARGES
ELECTROMAGNETIC FIELDS
ELECTROSTATICS
INTERACTIONS
LARMOR RADIUS
LAYERS
MAGNETIC FIELDS
MATHEMATICS
MOTION
PHYSICS
PLASMA
PLASMA SHEATH
PLASMA WAVES
POISSON EQUATIONS
PROBES
ROTATION
STATISTICS
SURFACES
TESTING
TUBES