کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1569150 | 1514257 | 2007 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Understanding the SOL flow in L-mode plasma on divertor tokamaks, and its influence on the plasma transport Understanding the SOL flow in L-mode plasma on divertor tokamaks, and its influence on the plasma transport](/preview/png/1569150.png)
Significant progress has been made in understanding the driving mechanisms in SOL mass transport along the magnetic field lines (SOL flow). SOL flow measurements by Mach probes and impurity plume have been performed in L-mode plasma at various poloidal locations in divertor tokamaks. All results showed common SOL flow patterns: subsonic flow with parallel Mach number (M∥) of 0.2–1 was generated from the Low-Field-Side (LFS) SOL to the High-Field-Side (HFS) divertor for the ion ∇B drift towards the divertor. The SOL flow pattern was formed mainly by LFS-enhanced asymmetry in diffusion and by classical drifts. In addition, divertor detachment and/or intense puffing-and-pump enhanced the HFS SOL flow. Most codes have incorporated drift effects, and asymmetric diffusion was modelled to simulate the fast SOL flow. Influences of the fast SOL flow on the impurity flow in the SOL, shielding from core plasma, and deposition profile, were directly observed in experiments.
Journal: Journal of Nuclear Materials - Volumes 363–365, 15 June 2007, Pages 41–51