ISOLATION OF THE IMPROVED CORE CONFINEMENT FROM HIGH RECYCLING AND RADIATIVE BOUNDARY IN REVERSED MAGNETIC SHEAR PLASMAS OF JT-60U

Authors
ITAMI K YOSHINO R ASAKURA N FUJITA T HOSOGANE N NAITO O HIGASHIJIMA S KONOSHIMA S SAKASAI A TAKENAGA H SHIMADA M
Citation
K. Itami et al., ISOLATION OF THE IMPROVED CORE CONFINEMENT FROM HIGH RECYCLING AND RADIATIVE BOUNDARY IN REVERSED MAGNETIC SHEAR PLASMAS OF JT-60U, Physical review letters, 78(7), 1997, pp. 1267-1270
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
7
Year of publication
1997
Pages
1267 - 1270
Database
ISI
SICI code
0031-9007(1997)78:7<1267:IOTICC>2.0.ZU;2-7
Abstract
Isolation of the core with improved confinement (inside the internal t ransport barrier) from high recycling and strongly radiative boundary plasmas was demonstrated for the first time in the reversed shear plas mas of the JT-60U tokamak. The internal transport barrier remained int act, while edge radiation and recycling was enhanced with neon and hyd rogen gas puffing. The internal transport barrier reduced the particle transport by a factor 10-15, while shrinking in the time scale of res istive diffusion towards the center.