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Comparison of ion-beam-probe and Langmuir-probe diagnostic techniques

Thesis/Dissertation ·
OSTI ID:4304070
Thesis. A comparison is made 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. (auth)
Research Organization:
Rensselaer Polytechnic Inst., Troy, N.Y. (USA). Plasma Dynamics Lab.
NSA Number:
NSA-29-028407
OSTI ID:
4304070
Report Number(s):
AD--768598-5-GA; RPDL--73-2; AFOSR-TR--73-1632
Country of Publication:
United States
Language:
English