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Phys. Rev. E 62, R49–R52 (2000)

Intermittency and turbulence in a magnetically confined fusion plasma

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V. Carbone1, L. Sorriso-Valvo1, E. Martines2, V. Antoni2,3, and P. Veltri1
1Dipartimento di Fisica, Università degli studi della Calabria, 87036 Rende (CS), ItalyIstituto Nazionale di Fisica della Materia, Unità di Cosenza, 87036 Italy
2Consorzio RFX, corso Stati Uniti 4, 35127 Padova, Italy
3Istituto Nazionale di Fisica della Materia, Unità di Padova, 35127 Italy

Received 2 March 2000; published in the issue dated July 2000

We investigate the intermittency of magnetic turbulence as measured in reversed field pinch plasmas. We show that the probability distribution functions of magnetic field differences are not scale invariant; that is, the wings of these functions are more important at the smallest scales, a classical signature of intermittency. We show that scaling laws appear also in a region very close to the external wall of the confinement device, and we present evidences that the observed intermittency increases moving towards the wall.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.62.R49
DOI:
10.1103/PhysRevE.62.R49
PACS:
52.35.Ra, 52.55.Ez, 52.55.Hc
 
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