STUDIES OF PLASMA OSCILLATIONS. Quarterly Status Report No. 15, June 1- August 31, 1963

Technical Report · Tue Oct 01 04:00:00 EDT 1963

OSTI ID:4087394

The frequencies of the resonances observed in the previous dipole resonance studies were predicted in closer agreement with experimental data. Theory for plasma production in which ionization is produced by an electron beam either partially or completely filling the tube section was also developed. Preliminary experimental results are consistent with the beam-plasma interaction theory. Additionally, ion waves excited on the positive column of a lowpressure Hg discharge by a magnetic field coil were studied. On the anode side of the coil, heavily damped waves were observed to propagate at frequencies of 2 to 40 kc/sec. The wavelengths were long (40 to 80 cm), and the phase velocities were higher than the ionic sound speed. No propagation was observed on the cathode side of the coil. A simple theory taking account of damping apparently can give an approximate explanation of the experimental results. Refined apparatus for studying the double sheath that forms at a discharge tube constriction was constructed. (D.C.W.)

• Research Organization: Stanford Univ., Calif. Microwave Lab'
• NSA Number: NSA-18-009468
• OSTI ID: 4087394
• Report Number(s): TID-19974; ML-1101
• Country of Publication: United States
• Language: English

Related Subjects

ANODES
CATHODES
COILS
CONFIGURATION
DIPOLES
ELECTRIC DISCHARGES
ELECTROMAGNETIC WAVES
ELECTRON BEAMS
EXCITATION
FREQUENCY
INSTRUMENTS
INTERACTIONS
IONIZATION
IONS
MAGNETIC FIELDS
MEASURED VALUES
MERCURY
OSCILLATIONS
PHYSICS
PLANNING
PLASMA
PRODUCTION
RESONANCE