Dependence of L mode confinement on plasma ion species in JET
- 1 September 1993
- journal article
- letter
- Published by IOP Publishing in Nuclear Fusion
- Vol. 33 (9) , 1319-1324
- https://doi.org/10.1088/0029-5515/33/9/i07
Abstract
The properties of JET plasmas obtained under similar L mode conditions, but using different ion species, are compared. In hydrogenic limiter discharges with NBI heating, particle confinement and sawtooth activity display a clear isotopic dependence. However, the gain in global energy confinement from hydrogen to deuterium is less pronounced than that implied by popular L mode scaling relationships and the improvement appears to be only partly due to a reduction in the local conductive heat flux. No significant change in energy or particle confinement is observed when deuterium is replaced by 3HeKeywords
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