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Measurements of energetic helium-3 minority distributions during ion cyclotron radio-frequency heating in the Princeton Large Torus

Technical Report ·
DOI:https://doi.org/10.2172/5153891· OSTI ID:5153891
Ion cyclotron radio-frequency heating experiments were performed with a /sup 3/He minority ion species in a /sup 4/He majority plasma in the Princeton Large Torus. The energetic /sup 3/He ion ''tail'' was measured directly with a charge exchange neutral analyzer for the first time. Comparisons with bounce-averaged quasi-linear calculations suggest a modestly peaked radi-frequency power deposition profile. The double charge exchange process /sup 3/He/sup + +/ )plus) /sup 4/He/sup 0/ )plus) /sup 3/He/sup 0/ )plus) /sup 4/He/sup + +/ demonstrated in these measurements may be useful as part of an alpha particle diagnostic in a fusion reactor experiment. 18 refs., 4 figs.
Research Organization:
Princeton Univ., NJ (USA). Plasma Physics Lab.
DOE Contract Number:
AC02-76CH03073
OSTI ID:
5153891
Report Number(s):
PPPL-2501; ON: DE88009337
Country of Publication:
United States
Language:
English