Publication Type
Conference Paper
Journal Name
Journal of Nuclear Materials
Publication Date
Page Numbers
843 to 846
Volume
390-91
Conference Name
18th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices
Conference Location
Toldeo, Spain
Conference Sponsor
Spanish Natl Fus Lab; Spanish Minist Sci & Innovat
Conference Date
-
Abstract
Filamentary structures are observed in the scrape-off layer of the National Spherical Torus Experime05nt during ELMs. While the primary filaments correspond to a direct result of the ELM event, the 'secondary' filaments which occur generally later but still within 1 ms of the ELM onset are observed to have the same characteristics as inter-ELM filaments (or blobs): poloidal auto-correlation lengths of similar to 4 cm, broadband frequency and poloidal wave number spectra and radial velocities of 1-2 km/s. At the same time, no MHD modes are observed during the phase in which secondary filaments are present. (C) 2009 Elsevier B.V. All rights reserved.