Observation of helical sawtooth oscillations in a tokamak

N. S. Brickhouse; T. H. Osborne; R. N. Dexter; S. C. Prager

doi:10.1063/1.865344

Observation of helical sawtooth oscillations in a tokamak

N. S. Brickhouse, T. H. Osborne, R. N. Dexter, S. C. Prager

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

Abstract

In the Tokapole II tokamak [Nucl. Fusion 19, 1509 (1979)] the three-dimensional structure of the rapid sawtooth crash that accompanies internal disruptions has been observed. The sawtooth crash is helical, i.e., the decrease in soft x-ray intensity occurs along a q = 1 helical contour, in accord with the standard reconnection model. The poloidally asymmetric radial expansion of the crash inward from the q = 1 surface provides a measure of the reconnection time consistent with single helicity reconnection from a growing, nonrotating magnetic island.

Original language	English (US)
Pages (from-to)	3429-3431
Number of pages	3
Journal	Physics of Fluids
Volume	28
Issue number	11
DOIs	https://doi.org/10.1063/1.865344
State	Published - 1985

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1063/1.865344

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title = "Observation of helical sawtooth oscillations in a tokamak",

abstract = "In the Tokapole II tokamak [Nucl. Fusion 19, 1509 (1979)] the three-dimensional structure of the rapid sawtooth crash that accompanies internal disruptions has been observed. The sawtooth crash is helical, i.e., the decrease in soft x-ray intensity occurs along a q = 1 helical contour, in accord with the standard reconnection model. The poloidally asymmetric radial expansion of the crash inward from the q = 1 surface provides a measure of the reconnection time consistent with single helicity reconnection from a growing, nonrotating magnetic island.",

author = "Brickhouse, \{N. S.\} and Osborne, \{T. H.\} and Dexter, \{R. N.\} and Prager, \{S. C.\}",

year = "1985",

doi = "10.1063/1.865344",

language = "English (US)",

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pages = "3429--3431",

journal = "Physics of Fluids",

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AU - Brickhouse, N. S.

AU - Osborne, T. H.

AU - Dexter, R. N.

AU - Prager, S. C.

PY - 1985

Y1 - 1985

N2 - In the Tokapole II tokamak [Nucl. Fusion 19, 1509 (1979)] the three-dimensional structure of the rapid sawtooth crash that accompanies internal disruptions has been observed. The sawtooth crash is helical, i.e., the decrease in soft x-ray intensity occurs along a q = 1 helical contour, in accord with the standard reconnection model. The poloidally asymmetric radial expansion of the crash inward from the q = 1 surface provides a measure of the reconnection time consistent with single helicity reconnection from a growing, nonrotating magnetic island.

AB - In the Tokapole II tokamak [Nucl. Fusion 19, 1509 (1979)] the three-dimensional structure of the rapid sawtooth crash that accompanies internal disruptions has been observed. The sawtooth crash is helical, i.e., the decrease in soft x-ray intensity occurs along a q = 1 helical contour, in accord with the standard reconnection model. The poloidally asymmetric radial expansion of the crash inward from the q = 1 surface provides a measure of the reconnection time consistent with single helicity reconnection from a growing, nonrotating magnetic island.

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EP - 3431

JO - Physics of Fluids

JF - Physics of Fluids

IS - 11

ER -

Observation of helical sawtooth oscillations in a tokamak

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