Computer Science
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..485..116i&link_type=abstract
The thirteenth topical conference on radio frequency power in plasmas. AIP Conference Proceedings, Volume 485, pp. 116-119 (199
Computer Science
Theory, Design, And Computerized Simulation, Tokamaks, Spherical Tokamaks, Electromagnetic Waves, Plasma Heating By Particle Beams
Scientific paper
Ion cyclotron range of frequency, ICRF, waves were injected into plasmas with an internal transport barrier, ITB, during reversed magnetic shear, RS, operations in JT-60U to study the electron heating and the low central fueling effects to plasmas with ITB. Steep gradients at the ITB in the electron temperature, Te, and in the ion temperature, Ti, profiles were sustained during ICRF heating. However, the density gradient was degraded during ICRF heating with low NBI power which corresponds to a low central particle fueling. We have found that the energy confinement time in the ICRF heated RS plasmas was increased compared to normal shear discharges, whereas the particle confinement time was the same as in normal shear discharges.
Fujita Takashi
Iwase M.
Kimura Haruo
Koide Yoshio
Kramer Gerrit J.
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