Microtearing instabilities and electron transport in the NSTX spherical tokamak
K L Wong1, S Kaye, D R Mikkelsen
1Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, USA.
Physical Review Letters
|October 13, 2007
Abstract:
We report a successful quantitative account of the experimentally determined electron thermal conductivity chi(e) in a beam-heated H mode plasma by the magnetic fluctuations from microtearing instabilities. The calculated chi(e) based on existing nonlinear theory agrees with the result from transport analysis of the experimental data. Without using any adjustable parameter, the good agreement spans the entire region where there is a steep electron temperature gradient to drive the instability.
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