EXPERIMENTS ON ION-ACOUSTIC WAVES.
Scientific rept. no. 6, 1 Jun 65-1 May 66.
ROYAL INST OF TECH STOCKHOLM (SWEDEN) MICROWAVE DEPT
Pagination or Media Count:
Propagation of ion-acoustic waves has been studied experimentally in a low pressure mercury discharge. Both self-excited and externally excited waves were observed in the frequency range 40 - 130 kHz. No static magnetic field was applied. The influence of the neutral gas pressure, electron density, discharge current, and tube diameter on the properties of the ion waves was examined. Different types of exciters were used. An experimental dispersion curve is compared with theoretical results. It is shown that at some values of the steadystate parameters the ion waves propagate completely undamped along the whole plasma column. Finally a comparison is made between the noise frequency spectrum and the frequency dependence of the ion waves. Author
- Plasma Physics and Magnetohydrodynamics
- Radiofrequency Wave Propagation