Experimental determination of non-diffusive toroidal momentum flux in JT-60U
- 1 March 1994
- journal article
- letter
- Published by IOP Publishing in Nuclear Fusion
- Vol. 34 (3) , 449-454
- https://doi.org/10.1088/0029-5515/34/3/i12
Abstract
Toroidal momentum transport is examined experimentally by using on- and off-axis tangential neutral beam injections on the JT-60U tokamak. From a steady state momentum balance analysis-on the assumption that momentum flux is diffusive-it is found that the profiles of the momentum diffusivity are quite different in the two cases of on- and off-axis beam injections. In addition, transient toroidal momentum transport was examined by using a momentum source modulation experiment. On the assumption that the toroidal momentum flux consists of a diffusive and a convective flow term, it is found that there is non-diffusive inward flux of toroidal momentum whose absolute value is comparable to that of the diffusive fluxKeywords
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