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Finite pressure effects on sawtooth oscillation [electronic resource].

Published:
Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
Pages: (17 pages) : digital, PDF file
Additional Creators:
Princeton University, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Nonlinear 3-D simulation of sawtooth oscillations shows that the helically twisted hot spot has a prominent toroidal bulge at the large major radius side, characteristic of a high εβ{sub p} instability. This bulge drives other m/n islands just outside the mixing radius resulting in a stochastic annular region. A similar effect is also found in shaped plasmas, even at low β. These effects agree with experimental data, giving detailed support to the Kadomtsev reconnection model. This effect can also be used to explain the experimental sawtooth heat pulse anomaly.' At very high εβ{sub p}, the stochastic region can essentially fill the whole plasma, and can result in a high β disruption.' 16 refs., 6 figs.
Report Numbers:
E 1.99:pppl-2715
pppl-2715
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Note:
Published through SciTech Connect.
08/01/1990.
"pppl-2715"
"DE90015871"
Park, W.; McGuire, K.; Fredrickson, E.; Monticello, D.A.
Funding Information:
AC02-76CH03073
View MARC record | catkey: 14746355