Local measurements of correlated momentum and heat transport in the TFTR tokamak

S. D. Scott, P. H. Diamond, R. J. Fonck, Robert James Goldston, R. B. Howell, K. P. Jaehnig, G. Schilling, E. J. Synakowski, M. C. Zarnstorff, C. E. Bush, E. Fredrickson, K. W. Hill, A. C. Janos, D. K. Mansfield, D. K. Owens, H. Park, G. Pautasso, A. T. Ramsey, J. Schivell, G. D. TaitW. M. Tang, G. Taylor

Research output: Contribution to journalArticlepeer-review

157 Scopus citations


Simultaneous profile measurements of the toroidal rotation speed and ion temperature during unbalanced neutral beam injection in the Tokamak Fusion Test Reactor show that the ion momentum and thermal diffusivities are comparable in magnitude (1.5i) and vary similarly with plasma current and minor radius. The correlation of and i is consistent with anomalous transport driven by collisionless electrostatic microinstabilities including ion-temperature-gradient-driven modes (i modes) and collisionless trapped-electron modes.

Original languageEnglish (US)
Pages (from-to)531-534
Number of pages4
JournalPhysical review letters
Issue number5
StatePublished - 1990

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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