Growth rate of peeling mode in the near separatrix region of diverted tokamak plasma

doi:10.1088/1674-1056/23/1/015202

Abstract An analytical expression of the peeling mode in the near separatrix region of diverted tokamak plasma is derived. It is shown that in diverted plasmas both with single and double X points, though the perturbed potential energy of the unstable peeling mode tends to be large, its growth rate becomes very small due to the even larger kinetic energy. Compared to some recent studies that give qualitatively correct results about this growth rate, our result is directly related with the diverted equilibrium quantities suitable for application to realistic experiments.

Keywords: diverted plasma tokamak pedestal growth rate of peeling mode

Received: 26 April 2013
Revised: 23 May 2013
Accepted manuscript online:

PACS:	52.35.Py	(Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))
	52.55.Fa	(Tokamaks, spherical tokamaks)

Fund: Project supported by the National Magnetic Confinement Fusion Science Program of China (Grant No. 2009GB101002).

Corresponding Authors: Shi Bing-Ren
E-mail: shibr@swip.ac.cn

Cite this article:

Shi Bing-Ren (石秉仁) Growth rate of peeling mode in the near separatrix region of diverted tokamak plasma 2014 Chin. Phys. B 23 015202

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Growth rate of peeling mode in the near separatrix region of diverted tokamak plasma

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