Accession Number : AD0475390

Title :   ACOUSTICAL EFFECTS IN A NEON GLOW DISCHARGE.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Carretta, Albert A., Jr. ; Moore, William N.

Report Date : 1965

Pagination or Media Count : 39

Abstract : The pressure oscillations accompanying the moving striations in the positive column region of a neon filled discharge tube were observed using a specially constructed and calibrated condenser microphone probe. During stable discharge conditions when the moving striations could be observed optically, pressure amplitudes measured were between 0.02 and 0.2 dynes/sq cm, depending upon ambient pressure and discharge current, with a frequency which was always at the repetition rate for the striations. Frequency was observed to be a function of pressure and current. For any given condition of pressure and current, only one frequency was observed, suggesting excitation of a normal mode. A theory to explain such a normal mode excitation in the discharge is postulated. (Author)

Descriptors :   (*NEON, GAS DISCHARGES), (*GLOW DISCHARGES, ACOUSTIC PROPERTIES), DISCHARGE TUBES, PRESSURE, OSCILLATION, EMISSIVITY, FREQUENCY, PHOTOMULTIPLIER TUBES, LANGMUIR PROBES, ELECTRICAL PROPERTIES, MICROPHONES, MEASURING INSTRUMENTS, PLASMAS(PHYSICS), ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, SOUND, RESONANT FREQUENCY.

Subject Categories : Acoustics
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE