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Abstract

In JET, the ablation of injected pellets produces a striking resonance effect when the pellets reach surfaces with q-values 1 and 3/2. Subsequently, structures with mode numbers m=1, n=1 and m=3, n=2 are observed with the soft X-ray cameras for more than 2 s as compact snake- like perturbations. These structures, which persist through several sawtooth collapses, give information on the radii of the q=1 and q=3over2 surfaces and the q- profile evolution. The observations can be explained by the formation of magnetic islands.

Additional information

Authors: WELLER A, JET JOINT UNDERTAKING, ABINGDON, UK;CHEETHAM A D, JET JOINT UNDERTAKING, ABINGDON, UK;EDWARDS A W, JET JOINT UNDERTAKING, ABINGDON, UK;GILL R D, JET JOINT UNDERTAKING, ABINGDON, UK;GONDHALEKAR A, JET JOINT UNDERTAKING, ABINGDON, UK;GRANETZ R S, JET JOINT UNDERTAKING, ABINGDON, UK;SNIPES J, JET JOINT UNDERTAKING, ABINGDON, UK;WESSON J A JET JOINT UNDERTAKING, ABINGDON, UK, JET JOINT UNDERTAKING, ABINGDON, UK
Bibliographic Reference: REPORT JET-P(87)07, 1987, AVAILABILITY: JET, ABINGDON, UK
Record Number: 1989126092900 / Last updated on: 1989-05-01
Category: PUBLICATION
Available languages: en