Visible imaging of edge turbulence in NSTX

Zweben, S. ; Maqueda, R. ; Hill, K. ; Johnson, D. ; Kaye, S. ; Kugel, H. ; Levinton, F. ; Maingi, R. ; Roquemore, L. ; Sabbagh, S. ; Wurden, G.

Princeton University. Plasma Physics Laboratory.

关键词: Plasma Diagnostics;    70 Plasma Physics And Fusion Technology;    Visible Radiation;    Plasma Density;    Images;   

DOI  :  10.2172/757605
RP-ID  :  PPPL-3464
RP-ID  :  AC02-76CH03073
RP-ID  :  757605

美国|英语

来源: UNT Digital Library

【 摘 要 】

Edge plasma turbulence in tokamaks and stellarators is believed to cause the radial heat and particle flux across the separatrix and into the scrape-off-layers of these devices. This paper describes initial measurements of 2-D space-time structure of the edge density turbulence made using a visible imaging diagnostic in the National Spherical Torus Experiment (NSTX). The structure of the edge turbulence is most clearly visible using a method of ''gas puff imaging'' to locally illuminate the edge density turbulence.