Computer Science
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..485..152r&link_type=abstract
The thirteenth topical conference on radio frequency power in plasmas. AIP Conference Proceedings, Volume 485, pp. 152-155 (199
Computer Science
Theory, Design, And Computerized Simulation, Tokamaks, Spherical Tokamaks, Electromagnetic Waves, Plasma Heating By Particle Beams
Scientific paper
A new array of loop probes has been installed behind the inner wall tiles, opposite one of the RF antennas. These probes measure the power transmitted through the plasma core. During fundamental minority fast-wave heating in D(H), the transmission factor decreases with increasing minority concentration (scanned shot-to-shot), in agreement with the predictions of a simple analytic theory and of the FELICE full wave code. During a shot the transmission is observed to vary synchronously with the sawtooth instability in the plasma center. The sense of this variation is observed to reverse as the minority concentration is raised. Both observations are consistent with the ejection of minority ions from the core during a sawtooth crash.
Bonoli P. T.
Porkolab Miklos
Reardon Joel
Wukitch S. J.
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