ON THE DIFFUSION IN THE POSITIVE COLUMN IN A LONGITUDINAL MAGNETIC FIELD

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Nuclear Fusion, Suppl.

OSTI ID:4808849

Gierke, G V; Woehler, K H

Detailed measurements on anomalous diffusion in the positive column in a longitudinal magnetic field are carried out in a discharge. The dependence of the diffusion on the magnetic field (by measurement of the longitudinal electric field) is recorded simultaneously with radial potential distributions, with the electron temperatures, and with the influence of additional radiofrequeney ionization. All these measurements are compatible with several theories. Application of an additional multipolar helical or azimuthal magnetic field changes the dependence of the longitudinal electric field on the longitudinal magnetic field. In both cases the direetion of the current is shown to be significant. The stabilizing and destabilizing action of the additional field and its dependence on the main magnetic field strength, the gas pressure, and the current direction are discussed. In the case of the multipolar field, effects of enhanced diffusion have been found that are not easy to explain. In the case of the additional azimuthal field there is a distinct dependence of the magnitude and sign of the azimuthal field on the critical magnetic field. (auth)

• Research Organization: Max-Planck-Institut fur Physik und Astrophysik, Munich; and Institut fur Plasmaphysik GmpH, Garching, Ger.
• NSA Number: NSA-16-023216
• OSTI ID: 4808849
• Journal Information: Nuclear Fusion, Suppl., Journal Name: Nuclear Fusion, Suppl.
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CONFIGURATION
CURRENTS
DIFFUSION
DISTRIBUTION
ELECTRIC DISCHARGES
ELECTRIC FIELDS
ELECTRIC POTENTIAL
ELECTRONS
FREQUENCY
IONIZATION
MAGNETIC FIELDS
MEASURED VALUES
PHYSICS
POSITIVE COLUMN
RADIO WAVES
STABILITY
TEMPERATURE