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McCarthy, P.J.; Kardaun, O.J.W.F.; Murmann, H.; Lackner, K.; Riedel, K.S.
Max-Planck-Institut fuer Plasmaphysik, Garching (Germany, F.R.); ASDEX Team1990
Max-Planck-Institut fuer Plasmaphysik, Garching (Germany, F.R.); ASDEX Team1990
AbstractAbstract
[en] A database of high density (.3 < anti ne/1020 m-3 < .8), low qa (1.9 < qa < 3.4), Ohmic discharges from the ASDEX experiment is analysed statistically. Bulk parameter scalings and parameterised temperature and density profile shapes are presented. The total plasma kinetic energy, assuming Ti = Te, scales as anti ne.54±.01 Ip.90±.04 and is independent of Bt. The electron temperature profile peaking factor scales as T03/2/< T3/2> = .94 (±.04)qa1.07±.04 in close agreement with the assumption of classical resistive equilibrium. In the inner half of the plasma, the inverse fall-off length for both temperature and density has a strong dependence on qa, with the temperature dependence being more pronounced. Outside the half radius the qa dependence disappears but the density profile broadens near the edge with increasing plasma current. A second database of moderate density, moderate qa discharges is presented for comparison. (orig.)
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May 1990; 52 p; GRANT DE-FG02-86ER53223
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