Microtearing Instabilities and Electron Transport in the NSTX Spherical Tokamak

K.L. Wong, S. Kaye, D.R. Mikkelsen, J.A. Krommes, K. Hill, R. Bell, and B. LeBlanc

Princeton University. Plasma Physics Laboratory.

关键词: Tokamaks, Nstx';    Tearing Instability;    Thermal Conductivity;    70 Plasma Physics And Fusion Technology;    Transport Transport Phenomena;   

RP-ID  :  PPPL-4261
RP-ID  :  DE-ACO2-76CHO3073
RP-ID  :  961882

美国|英语

来源: UNT Digital Library

【 摘 要 】

We report a successful quantitative account of the experimentally determined electron thermal conductivity χe in a beam-heated H mode plasma by the magnetic fluctuations from microtearing instabilities. The calculated χe 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.