A theory for the pressure pedestal in high (H) mode tokamak discharges

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<jats:p>When a tokamak plasma makes a transition into the good or the high confinement H mode, the edge density and pressure steepen and develop a very sharp pressure pedestal. Prediction of the height and width of this pressure profile has been actively pursued so as to provide a reliable extrapolation to future burning plasma devices. The double-Beltrami two-fluid equilibria of Mahajan and Yoshida [Phys. Plasmas 7, 635 (2000)] are invoked and extended to derive scalings for the edge pedestal width and height with plasma parameters: these scalings come out in agreement with the established semiempirical scalings. The theory predictions are also compared with limited published H-mode data and the agreement is found to be very encouraging.</jats:p>

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Details 詳細情報について

  • CRID
    1870302167555899008
  • DOI
    10.1063/1.1852468
  • ISSN
    10897674
    1070664X
  • Data Source
    • OpenAIRE

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