Multifractality in edge localzed modes in Japan Atomic Energy Research Institute Tokamak-60 Upgrade

Bak, P. E.; Asakura, Nobuyuki; Miura, Yukitoshi; Nakano, Tomohide; Yoshino, Ryuji

The temporal losses of confinement during Edge Localised Modes in JT-60U show multifractal scaling and the spectra are generally smooth, but in some cases there are signs of discontinuous derivatives. Dynamics of the Sugama-Horton Model, interpreted as Edge Localised Modes, also display multifractal scaling. The spectra display singularities in the derivative, which can be interpreted as a phase transition. We argue that the multifractal spectra of Edge Localised Modes can be used to discriminate between different experimental discharges and validate Edge Localised Mode models.

Language	:	English
Journal	:	Physics of Plasmas
Volume	:	8
Number	:	4
Pages	:	p.1248 - 1252
Publication Year/Month	:	2001/04
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Paper URL	:	https://doi.org/10.1063/1.1354647
DOI for research data	:
Keywords	:	ELM; H-mode; Confinement; JT-60U; Tokamak; Multifractal; Model
Research Facility	:	JT-60(臨界プラズマ試験装置)
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Registration No. : A20010086
JAEA Abstracts No. : 290880
Paper Submission No. : 18398

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