Ido T, Kamiya K, Miura Y, Hamada Y, Nishizawa A, Kawasumi Y. Observation of the fast potential change at L-H transition by a heavy-ion-beam probe on JFT-2M.
PHYSICAL REVIEW LETTERS 2002;
88:055006. [PMID:
11863739 DOI:
10.1103/physrevlett.88.055006]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/1999] [Indexed: 05/23/2023]
Abstract
The fast potential change near the separatrix is measured directly at the L-H transition by a heavy-ion-beam probe. The potential changes with two different time scales at the L-H transition triggered by a sawtooth crash: it drops at first with the time scale of 10--100 mus just after the arrival of the heat pulse due to the sawtooth crash. Then, it decreases again at a few 100 mus after the first drop at a time scale of about 200 mus.
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