By the same authors

From the same journal

The stability of ballooning modes in tokamaks with internal transport barriers

Research output: Contribution to journalArticle

Standard

The stability of ballooning modes in tokamaks with internal transport barriers. / Webster, A J ; Szwer, D J ; Wilson, H R .

In: Physics of Plasmas, Vol. 12, No. 9, 092502, 09.2005, p. -.

Research output: Contribution to journalArticle

Harvard

Webster, AJ, Szwer, DJ & Wilson, HR 2005, 'The stability of ballooning modes in tokamaks with internal transport barriers', Physics of Plasmas, vol. 12, no. 9, 092502, pp. -. https://doi.org/10.1063/1.2032742

APA

Webster, A. J., Szwer, D. J., & Wilson, H. R. (2005). The stability of ballooning modes in tokamaks with internal transport barriers. Physics of Plasmas, 12(9), -. [092502]. https://doi.org/10.1063/1.2032742

Vancouver

Webster AJ, Szwer DJ, Wilson HR. The stability of ballooning modes in tokamaks with internal transport barriers. Physics of Plasmas. 2005 Sep;12(9):-. 092502. https://doi.org/10.1063/1.2032742

Author

Webster, A J ; Szwer, D J ; Wilson, H R . / The stability of ballooning modes in tokamaks with internal transport barriers. In: Physics of Plasmas. 2005 ; Vol. 12, No. 9. pp. -.

Bibtex - Download

@article{8812f5eb0d2c426d83595dfa20e31d03,
title = "The stability of ballooning modes in tokamaks with internal transport barriers",
abstract = "Modern tokamaks can produce transport barriers (TBs)-localized regions with an increased energy confinement. Previous studies have been unable to examine the stability of internal TBs to radially extended short-wavelength magnetohydrodynamic instabilities ({"}ballooning modes{"}), for the usual case with a sheared plasma flow and a magnetic shear that passes through zero near the TB. An established technique is adapted to study this situation, finding instability if (1) there is a low-pressure gradient, and if (2) the nearest {"}resonant surface{"} at which a Fourier mode is resonant, is sufficiently close. Surprisingly, flow shear is no more stabilizing than for magnetic shears of order one. This is explained. Without a strongly stabilizing mechanism, ballooning modes will fundamentally limit a TB's radial extent, preventing them from extending across the entire plasma radius.",
author = "Webster, {A J} and Szwer, {D J} and Wilson, {H R}",
year = "2005",
month = "9",
doi = "10.1063/1.2032742",
language = "English",
volume = "12",
pages = "--",
journal = "Physics of Plasmas",
issn = "1070-664X",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The stability of ballooning modes in tokamaks with internal transport barriers

AU - Webster, A J

AU - Szwer, D J

AU - Wilson, H R

PY - 2005/9

Y1 - 2005/9

N2 - Modern tokamaks can produce transport barriers (TBs)-localized regions with an increased energy confinement. Previous studies have been unable to examine the stability of internal TBs to radially extended short-wavelength magnetohydrodynamic instabilities ("ballooning modes"), for the usual case with a sheared plasma flow and a magnetic shear that passes through zero near the TB. An established technique is adapted to study this situation, finding instability if (1) there is a low-pressure gradient, and if (2) the nearest "resonant surface" at which a Fourier mode is resonant, is sufficiently close. Surprisingly, flow shear is no more stabilizing than for magnetic shears of order one. This is explained. Without a strongly stabilizing mechanism, ballooning modes will fundamentally limit a TB's radial extent, preventing them from extending across the entire plasma radius.

AB - Modern tokamaks can produce transport barriers (TBs)-localized regions with an increased energy confinement. Previous studies have been unable to examine the stability of internal TBs to radially extended short-wavelength magnetohydrodynamic instabilities ("ballooning modes"), for the usual case with a sheared plasma flow and a magnetic shear that passes through zero near the TB. An established technique is adapted to study this situation, finding instability if (1) there is a low-pressure gradient, and if (2) the nearest "resonant surface" at which a Fourier mode is resonant, is sufficiently close. Surprisingly, flow shear is no more stabilizing than for magnetic shears of order one. This is explained. Without a strongly stabilizing mechanism, ballooning modes will fundamentally limit a TB's radial extent, preventing them from extending across the entire plasma radius.

U2 - 10.1063/1.2032742

DO - 10.1063/1.2032742

M3 - Article

VL - 12

SP - -

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 9

M1 - 092502

ER -