Experimental Observation of Linear and Nonlinear Ion Acoustic Phenomena in a Cylindrical Geometry.
Abstract
Ion acoustic phenomena are studied in a cylindrical geometry for two distinct cases. A large amplitude compressive pulse is seen to evolve into solitons. The evolution of these solitons and their dependence on initial conditions show a similarity to previous work on one dimensional solitons. Dimensionless scaling arguments are used to distinguish the two cases. In the presence of a steady state uniform cylindrical beam, approximated by a ring in V sub r, V sub phi, an ion-ion beam instability is observed. This instability exists for a limited range of beam velocities and shows a marked similarity to the strictly one dimensional ion-ion beam instability. Solution of the appropriate dispersion relation shows agreement with the observed phenomenon.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1974
- Bibcode:
- 1974PhDT........16R
- Keywords:
-
- Physics: Fluid and Plasma;
- Cylindrical Bodies;
- Ion Acoustic Waves;
- High Energy Electrons;
- Ion Beams;
- Plasmas (Physics);
- Nuclear and High-Energy Physics