Momentum Transport Studies in High E x B Shear Plasmas in NSTX.

Solomon, W. M. ; Kaye, S. M. ; Bell, R. E. ; LeBlanc, B. P. ; Menard, J. E.

Technical Information Center Oak Ridge Tennessee

关键词: Shear plasmas;    Momentum transport;    Parameter spaces;    E x B shearing rates;    National Spherical Torus Experiment (NSTX);   

RP-ID  :  DE2009959332

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Experiments have been conducted on NSTX to study both steady state and perturbative momentum transport. These studies are unique in their parameter space under investigation, where the low aspect ratio of NSTX results in rapid plasma rotation with E X B shearing rates high enough to suppress low-k turbulence. In some cases, the ratio of momentum to energy connement time is found to exceed five. Momentum pinch velocities of order 10-40 m/s are inferred from the measured angular momentum flux evolution after non-resonant magnetic perturbations are applied to brake the plasma.