Comparison of Ion Beam Probe and Langmuir Probe Diagnostic Techniques.
RENSSELAER POLYTECHNIC INST TROY N Y PLASMA DYNAMICS LAB
Pagination or Media Count:
The report concerns the comparison of two diagnostic techniques for magnetically confined plasmas - the Langmuir probe technique and the ion beam probe technique. The comparison is made for plasma charged particle number density and plasma electron temperature measurements on the Rensselaer hollow cathode discharge. The principles, theory, and system description required to understand and operate each probe are discussed. Experimental results taken with each device on the same plasma are given and compared. It is found that one or both techniques need to be extended for a more valid comparison. Work towards a more sensitive ion beam probe is mentioned with this comparison in mind. In addition, the application of the ion beam probe to a study of a plasma with a coherent instability and the feedback stabilization of the instability is discussed. Author
- Fusion Devices (Thermonuclear)
- Plasma Physics and Magnetohydrodynamics