1976
DOI: 10.1063/1.861490
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Resistive instabilities in a tokamak

Abstract: Application of resistive instability theory shows that toroidal effects can stabilize the tearing mode in devices like the Princeton Large Torus. Contraction of the current channel is destabilizing. Finite fluid compressibility is crucial to this phenomenon.

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Cited by 196 publications
(194 citation statements)
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“…Note that D s у0(hр0) in a cylinder, while D s р0 (hу0) for a qϾ1 surface in a toroidal geometry. 14 In a ␤→0 limit, the ⌬Ј value reduces to the zero pressure case ⌬Јϭ1.54 ͓see Fig. 1͑b͔͒.…”
Section: Eigenmode Solutions In the Presence Of Finite Pressurementioning
confidence: 99%
“…Note that D s у0(hр0) in a cylinder, while D s р0 (hу0) for a qϾ1 surface in a toroidal geometry. 14 In a ␤→0 limit, the ⌬Ј value reduces to the zero pressure case ⌬Јϭ1.54 ͓see Fig. 1͑b͔͒.…”
Section: Eigenmode Solutions In the Presence Of Finite Pressurementioning
confidence: 99%
“…͑The plasma pressure is artificially small to avoid stabilization. 9 ͒ At dissipation parameters relevant to conventional tokamak startup operation (Sϭ R / A ϭ10 6 and Pmϭ v / R ϭ0.1, where R , A , and v are the resistive, Alfvénic, and viscous time scales, respectively͒, the calculated growth rate of the linear mode is 4.7ϫ10 Ϫ4 A Ϫ1 for resistive MHD, and nonlinear saturation occurs over a time scale that is nearly 1/10 of the global resistive diffusion time ͓see Fig. 1͑a͔͒.…”
Section: A Resistive Evolution Of a Magnetic Islandmentioning
confidence: 99%
“…In the nonlinear phase the diamagnetic drift effect leads to the ion polarization current model of the threshold for NTM onset, which has attracted extensive studies [7][8][9][10][11][12][13][14][15]. In addition, the Glasser effect also provides a somewhat smaller stabilizing effect [5,16,17].…”
Section: Introductionmentioning
confidence: 99%