A destabilizing effect of rotation shear on magnetohydrodynamic ballooning modes

doi:10.1063/1.2718909

Title: A destabilizing effect of rotation shear on magnetohydrodynamic ballooning modes

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Abstract

The destabilization of ideal magnetohydrodynamic ballooning modes at finite rotation shear is demonstrated for the model s-{alpha} equilibrium by exploiting low magnetic shear, s, to simplify the two-dimensional stability problem to a one-dimensional eigenvalue problem. This simpler calculation captures the same features as exhibited by a full two-dimensional treatment, namely that stable values in the s-{alpha} stability diagram become unstable above a critical rotation shear. The first and second stability boundaries at low s are calculated as functions of rotation shear.

Authors:

Connor, J. W.; Hastie, R. J.; Webster, A. J. ^[1]

EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxfordshire, OX14 3DB (United Kingdom)

Publication Date:: Sun Apr 15 00:00:00 EDT 2007

OSTI Identifier:: 20974954

Resource Type:: Journal Article

Resource Relation:: Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 4; Other Information: DOI: 10.1063/1.2718909; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BALLOONING INSTABILITY; DIAGRAMS; EIGENFUNCTIONS; EIGENVALUES; EQUILIBRIUM; MAGNETOHYDRODYNAMICS; ONE-DIMENSIONAL CALCULATIONS; PLASMA; ROTATION; SHEAR; STABILITY; TWO-DIMENSIONAL CALCULATIONS

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                    Connor, J. W., Hastie, R. J., and Webster, A. J.. A destabilizing effect of rotation shear on magnetohydrodynamic ballooning modes.  United States: N. p., 2007. 
        Web.  doi:10.1063/1.2718909.

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                    Connor, J. W., Hastie, R. J., & Webster, A. J.. A destabilizing effect of rotation shear on magnetohydrodynamic ballooning modes.  United States.  doi:10.1063/1.2718909.

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                    Connor, J. W., Hastie, R. J., and Webster, A. J.. Sun .  
        "A destabilizing effect of rotation shear on magnetohydrodynamic ballooning modes".  United States.  
        doi:10.1063/1.2718909.

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@article{osti_20974954,

  title        = {A destabilizing effect of rotation shear on magnetohydrodynamic ballooning modes},

  author       = {Connor, J. W. and Hastie, R. J. and Webster, A. J.},

  abstractNote = {The destabilization of ideal magnetohydrodynamic ballooning modes at finite rotation shear is demonstrated for the model s-{alpha} equilibrium by exploiting low magnetic shear, s, to simplify the two-dimensional stability problem to a one-dimensional eigenvalue problem. This simpler calculation captures the same features as exhibited by a full two-dimensional treatment, namely that stable values in the s-{alpha} stability diagram become unstable above a critical rotation shear. The first and second stability boundaries at low s are calculated as functions of rotation shear.},

  doi          = {10.1063/1.2718909},

  journal      = {Physics of Plasmas},

  number       = 4,

  volume       = 14,

  place        = {United States},

  year         = {Sun Apr 15 00:00:00 EDT 2007},

  month        = {Sun Apr 15 00:00:00 EDT 2007}

}

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DOI: 10.1063/1.2718909

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