Microwave Noise from AN Inertia Controlled Neon Discharge.
Abstract
The microwave noise detected by external capacitive probes over an octave in frequency, including the electron plasma frequency of an inertia controlled neon column, has been observed. The noise was of varied character determined by the pressure and behavior of the sheath at the heated cathode. At high pressure (50 microns) an axial standing wave existed while low pressure (20 microns) produced a collection of peaks in frequency. The cathode sheath could cause the peaks to be a regularly spaced series independent of position or an irregular collection both in space and frequency. Correlation of the signals from a probe pair revealed the fields of the peaks to be dipolar and those of the standing wave to be symmetric about the column. A speculative model including a detailed discussion of the discharge is proposed to explain the observations.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1974
- Bibcode:
- 1974PhDT........22S
- Keywords:
-
- Physics: Fluid and Plasma;
- Inertia Principle;
- Microwave Emission;
- Neon;
- Cathodes;
- Electron Plasma;
- High Pressure;
- Signal Analysis;
- Standing Waves;
- Plasma Physics