Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 337, Issue 1-3, Pages 530-534Publisher
ELSEVIER
DOI: 10.1016/j.jnucmat.2004.10.005
Keywords
edge plasma; gas injection and fuelling; probes; plasma flow; Tore Supra
Ask authors/readers for more resources
The response of the scrape-off layer (SOL) to supersonic pulsed gas injection (SPGI) in Tore Supra is measured by a reciprocating Mach probe. The edge density increases abruptly following injection and decays to its pre-injection value in about 10ms. The edge temperature falls to 5-10eV range. The perturbation appears to be toroidally symmetric. The density increase depends on the injected amount of deuterium gas, but the temperature decrease does not. The parallel Mach number changes during the density spike; the sign of the change depends on the poloidal location of the injection nozzle. We use a simple one-dimensional fluid model for the SOL to interpret the measurements. The Mach number change lasts about 10ms as well, indicating the existence of a poloidally localized ionization source in the vicinity of the nozzle. (c) 2004 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available