Evolution of geodesic acoustic mode in ohmic H-mode in TUMAN-3M tokamak
2012 (English)In: Technical physics letters, ISSN 1063-7850, E-ISSN 1090-6533, Vol. 38, no 3, 268-271 p.Article in journal (Refereed) Published
The behavior of a geodesic acoustic mode (GAM) in the TUMAN-3M tokamak has been experimentally studied using the heavy-ion beam probing technique. Oscillations of the electric potential under the action of a GAM localized at the plasma periphery have been detected. The GAM was observed in the regime of low confinement (L-mode) with low plasma density (similar to 0.8 x 10(19) m(-3)) and disappeared upon the transition to a high confinement regime (H-mode). The possible role of GAM as a precursor of the improved confinement (LH-transition) is discussed.
Place, publisher, year, edition, pages
2012. Vol. 38, no 3, 268-271 p.
IdentifiersURN: urn:nbn:se:kth:diva-95269DOI: 10.1134/S1063785012030194ISI: 000303051200020ScopusID: 2-s2.0-84859875404OAI: oai:DiVA.org:kth-95269DiVA: diva2:528354
QC 201205252012-05-252012-05-212012-05-25Bibliographically approved