Novel Turbulence Trigger for Neoclassical Tearings Mode in Tokamaks

Sanae I. Itoh; Kimitaka Itoh; Masatoshi Yagi

doi:10.1103/PhysRevLett.91.045003

Novel Turbulence Trigger for Neoclassical Tearings Mode in Tokamaks

Sanae I. Itoh, Kimitaka Itoh, Masatoshi Yagi

Division of Nuclear Fusion Dynamics

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

17 Citations (Scopus)

Abstract

A stochastic trigger by microturbulence for a neoclassical tearing mode (NTM) is studied. The NTM induces a topological change of magnetic structure and has a subcritical nature. The transition rate of the probability density function for and statistically averaged amplitude of the NTM are obtained. The boundary in the phase diagram is determined as the statistical long time average of the transition conditions. The NTM can be excited by crossing this boundary even in the absence of other global instabilities.

Original language	English
Journal	Physical review letters
Volume	91
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.91.045003
Publication status	Published - Jul 24 2003

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.91.045003

Cite this

@article{1e949dc2979143478b31fbccb17d2998,

title = "Novel Turbulence Trigger for Neoclassical Tearings Mode in Tokamaks",

abstract = "A stochastic trigger by microturbulence for a neoclassical tearing mode (NTM) is studied. The NTM induces a topological change of magnetic structure and has a subcritical nature. The transition rate of the probability density function for and statistically averaged amplitude of the NTM are obtained. The boundary in the phase diagram is determined as the statistical long time average of the transition conditions. The NTM can be excited by crossing this boundary even in the absence of other global instabilities.",

author = "Itoh, {Sanae I.} and Kimitaka Itoh and Masatoshi Yagi",

note = "Funding Information: The authors acknowledge Dr. Y. Miura for useful discussions, as well as Professor M. Vlad and Professor ?>F. Spineanu for improving the manuscript. This work is partly supported by the Grant-in-Aid for Scientific Research of MEXT Japan and by the collaboration programs of NIFS and of RIAM of Kyushu University. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2003",

month = jul,

day = "24",

doi = "10.1103/PhysRevLett.91.045003",

language = "English",

volume = "91",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Novel Turbulence Trigger for Neoclassical Tearings Mode in Tokamaks

AU - Itoh, Sanae I.

AU - Itoh, Kimitaka

AU - Yagi, Masatoshi

N1 - Funding Information: The authors acknowledge Dr. Y. Miura for useful discussions, as well as Professor M. Vlad and Professor ?>F. Spineanu for improving the manuscript. This work is partly supported by the Grant-in-Aid for Scientific Research of MEXT Japan and by the collaboration programs of NIFS and of RIAM of Kyushu University. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2003/7/24

Y1 - 2003/7/24

N2 - A stochastic trigger by microturbulence for a neoclassical tearing mode (NTM) is studied. The NTM induces a topological change of magnetic structure and has a subcritical nature. The transition rate of the probability density function for and statistically averaged amplitude of the NTM are obtained. The boundary in the phase diagram is determined as the statistical long time average of the transition conditions. The NTM can be excited by crossing this boundary even in the absence of other global instabilities.

AB - A stochastic trigger by microturbulence for a neoclassical tearing mode (NTM) is studied. The NTM induces a topological change of magnetic structure and has a subcritical nature. The transition rate of the probability density function for and statistically averaged amplitude of the NTM are obtained. The boundary in the phase diagram is determined as the statistical long time average of the transition conditions. The NTM can be excited by crossing this boundary even in the absence of other global instabilities.

UR - http://www.scopus.com/inward/record.url?scp=17544404512&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17544404512&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.91.045003

DO - 10.1103/PhysRevLett.91.045003

M3 - Article

AN - SCOPUS:17544404512

SN - 0031-9007

VL - 91

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

ER -

Novel Turbulence Trigger for Neoclassical Tearings Mode in Tokamaks

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this