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Accession Number:
AD0481298
Title:
EXTERNALLY EXCITED TRAVELING PULSES IN A NEON GLOW DISCHARGE.
Corporate Author:
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Report Date:
1964-01-01
Abstract:
Observations were made of artificially excited fluctuations in a cold cathode, neon glow discharge over a pressure range of 3.5 to 8 mm Hg and a current range of 0.1 to 2.0 ma. within this range was a region of operation free of striations. The positive column was excited with 0.2-10 microseconds pulses through a small coil wound around the positive column. Photomultiplier outputs, floating probe voltage, and samples of the discharge current were monitored on an oscilloscope. There are indications that a diffusing-impulse type disturbance with a velocity on the order of 10 to the 7th power cmsec originates at the pulsed coil, travels toward the cathode, and initiates waves of stratification in the cathodic region. A transverse magnetic field of about 1000 gauss interupts the propagation of the fast-traveling disturbance and of the wave of stratification. Data are presented showing stratificttion group velocity, phase velocity, wavelength, and frequency as a function of pressure and current. Author
Descriptive Note:
Master's thesis,
Pages:
0068
File Size:
0.00MB
