Optical diagnosis of kinetic effects in ion acoustic wave-particle interactions
A scanning CW dye laser system is used to excite ionic transitions in a quiescent magnetised barium plasma. The plasma fluorescence is collected by spatially scanning optics, which yield radial and axial information on wave propagation. Agreement between the measurements and a simple 1-D theoretical model is obtained when the collective and free streaming effects on the first order perturbed distribution are taken into account. The field and second order perturbed distribution function of an ion wave echo is observed when a second ion wave is excited. Good theoretical agreement is found in the relationship of echo position to wave excitation frequencies.
Bibliographic Reference: Paper presented: XIX International Conference on Phenomena in Ionized Gases, Belgrade (YU), July 10-14, 1989
Availability: Available from (1) as Paper EN 34604 ORA
Record Number: 198911078 / Last updated on: 1994-12-01
Original language: en
Available languages: en