Charge exchange ion temperature measurements during high power neutral beam injection on PLT
A compilation and analysis of charge exchange ion temperature measurements obtained duriang recent high power neutral beam heating experiments on PLT is presented. For titanium gettered discharges using water-cooled carbon limiters (a = 40 cm), PLT produced ion temperatures up to 6.6 keV (T/sub e/ = 3.5 - 4.0 keV) with 2.4 MW-level neutral deuterium injection into low density hydrogen and deuterium plasmas. Over the beam power (P/sub B/ approx. 0.7 - 2.4 MW) and line average electron density (anti n/sub e/ approx. 1.6 - 3.6 x 10/sup 13/ cm/sup -3/) parameter space thus far explored, the ion temperature increase, ..delta..T/sub i/, is observed to scale according to the empirical relation: ..delta..T/sub i/ (keV) = 4.5 +- 0.5 P/sub B/ (MW)/anti n/sub e/(x 10/sup 13/ cm/sup -3/), where anti n/sub e/ is the line average electron density at peak ion temperature.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 6236165
- Report Number(s):
- PPPL-1507; TRN: 79-007442
- Country of Publication:
- United States
- Language:
- English
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