Universal statistical properties of drift-interchange turbulence in TORPEX plasmas

B. Labit; I. Furno; A. Fasoli; A. Diallo; S. H. Müller; G. Plyushchev; M. Podestà; F. M. Poli

doi:10.1103/PhysRevLett.98.255002

Universal statistical properties of drift-interchange turbulence in TORPEX plasmas

B. Labit, I. Furno, A. Fasoli, A. Diallo, S. H. Müller, G. Plyushchev, M. Podestà, F. M. Poli

Research output: Contribution to journal › Article › peer-review

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Abstract

A unique parabolic relation is observed to link skewness and kurtosis of around ten thousand density fluctuation signals, measured over the whole cross section of a toroidal magnetized plasma for a broad range of experimental conditions. All the probability density functions of the measured signals, including those characterized by a negative skewness, are universally described by a special case of the Beta distribution. Fluctuations in the drift-interchange frequency range are necessary and sufficient to assure that probability density functions can be described by this specific Beta distribution.

Original language	English (US)
Article number	255002
Journal	Physical review letters
Volume	98
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.98.255002
State	Published - Jun 20 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.98.255002

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AU - Labit, B.

AU - Furno, I.

AU - Fasoli, A.

AU - Diallo, A.

AU - Müller, S. H.

AU - Plyushchev, G.

AU - Podestà, M.

AU - Poli, F. M.

PY - 2007/6/20

Y1 - 2007/6/20

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AB - A unique parabolic relation is observed to link skewness and kurtosis of around ten thousand density fluctuation signals, measured over the whole cross section of a toroidal magnetized plasma for a broad range of experimental conditions. All the probability density functions of the measured signals, including those characterized by a negative skewness, are universally described by a special case of the Beta distribution. Fluctuations in the drift-interchange frequency range are necessary and sufficient to assure that probability density functions can be described by this specific Beta distribution.

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JO - Physical review letters

JF - Physical review letters

IS - 25

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ER -

Universal statistical properties of drift-interchange turbulence in TORPEX plasmas

Abstract

All Science Journal Classification (ASJC) codes

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