PRODUCTION OF A HIGHLY IONIZED PLASMA WITH LOW IMPURITY LEVEL, WITH AND WITHOUT MAGNETIC BIAS FIELDS FOR MAGNETIC COMPRESSION EXPERIMENTS

Technical Report · Tue Aug 01 04:00:00 EDT 1961

OSTI ID:4813467

Beerwald, H; Bogen, P; El-Khalafawy, T; Fay, H; Hintz, E; Kever, H

Experiments with a preheating discharge for the production of an initial plasma with known and reproducible properties were carried out. An electrodeless ring discharge was chosen in order to make a high degree of purity of the plasma possible. Preliminary results concerning the breakdown of the gas, the formation of a highly ionized plasma, and the subsequent decay of the plasma due to end losses and recombination are reported. It was concluded that a good preionization of the gas, resulting in a high initial electron density and plasma frequency is essential for the fast growth of ionization. Both streak camera and magnetic field measurements indicated that the plasma is fairly uniformly distributed after about 5 mu sec. It was found that end losses are influenced by the presence of an internal field. A compilation of measured maximum electron temperatures is presented. (M.C.G.)

• Research Organization: Kernforschungsanlage. Institut fur Plasmaphysik, Julich, Germany
• NSA Number: NSA-16-006043
• OSTI ID: 4813467
• Report Number(s): JUL-19-PP
• Country of Publication: Germany
• Language: English

Related Subjects

BREAKDOWN
CAMERAS
CONFIGURATION
DENSITY
ELECTRIC DISCHARGES
ELECTRONS
FREQUENCY
GASES
HEATING
IMPURITIES
INTERACTIONS
ION RECOMBINATION
IONIZATION
LOSSES
MAGNETIC FIELDS
MEASURED VALUES
PHOTOGRAPHY
PHYSICS
PLASMA
SCHLIEREN
TEMPERATURE
TORUS
VARIATIONS