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Observation of new branch of toroidal Alfven eigenmodes in TFTR

Technical Report ·
DOI:https://doi.org/10.2172/219398· OSTI ID:219398

Experimental observations are presented of a new branch of the toroidal Alfven eigenmode spectrum during ICRF heating of plasmas on TFTR. The identification of the second branch is based largely on direct measurements of the toroidal mode numbers of the toroidal Alfven Eigenmodes, and by the differences in the time evolution of the frequency spectrum between the new branch and the original toroidal Alfven eigenmodes as reported by Taylor et al. Phys. Fluids B 5 2437 (1993). The new branch has so far only been observed in relatively low edge q(=4-4.5) plasmas.

Research Organization:
Princeton Univ., NJ (United States). Plasma Physics Lab.
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC02-76CH03073
OSTI ID:
219398
Report Number(s):
PPPL--3137; ON: DE96007481
Country of Publication:
United States
Language:
English

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