Factors affecting the self-excitation of low-frequency oscillations in an electric discharge

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Czechoslovak Journal of Physics

DOI:https://doi.org/10.1007/BF01688745· OSTI ID:4192447

Pekárek, Luděk

The influences of the individual factors affecting the production of low- frequency oscillations connected with moving striations in a discharge are analyzed and experimentally verified. From the conception of two mechanisms of feedback, which leads to self-excitation of these oscillations, it follows that the following influence the production of oscillations: 1) the tendency of the plasma to stratification, 2) the length of the positive column, 3) processes in regions at the electrodes, and 4) the external electric circuit. The measurements confirm the influence of all these factors. It is shown that the main factor conditioning the production of oscillations is the property of the plasma of the positive column--its tendency to stratification. The plasma of a glow discharge in neon, in the region of low pressures and currents investigated, has a very strong tendency to stratification with the exception of a small interval in the neighborhood of the pressure of 4 mm Hg and 3 ma current. Low- frequency oscillations and moving striations arc therefore very often present in a discharge in neon. The influence of the external circuit on the oscillations investigated was also experimentally proved, but it is very weak.

• Research Organization: Inst. of Physics, Czechoslovak Academy of Sciences, Prague
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-004840
• OSTI ID: 4192447
• Journal Information: Czechoslovak Journal of Physics, Journal Name: Czechoslovak Journal of Physics Journal Issue: 1 Vol. 8; ISSN 0011-4626
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CIRCUITS
CURRENTS
ELECTRIC DISCHARGES
ELECTRODES
EXCITATION
GLOW DISCHARGES
IONS
MEASURED VALUES
NEON
OSCILLATIONS
PHYSICS
PRESSURE