Advanced Search+
Yahui WANG, Tao WANG, Shizhao WEI, Zhiyong QIU. Nonlinear excitation of a geodesic acoustic mode by reversed shear Alfvén eignemodes[J]. Plasma Science and Technology, 2022, 24(2): 025105. DOI: 10.1088/2058-6272/ac42ba
Citation: Yahui WANG, Tao WANG, Shizhao WEI, Zhiyong QIU. Nonlinear excitation of a geodesic acoustic mode by reversed shear Alfvén eignemodes[J]. Plasma Science and Technology, 2022, 24(2): 025105. DOI: 10.1088/2058-6272/ac42ba

Nonlinear excitation of a geodesic acoustic mode by reversed shear Alfvén eignemodes

  • The parametric decay process of a reversed shear Alfvén eigenmeode (RSAE) into a geodesic acoustic mode and a kinetic RSAE is investigated using nonlinear gyrokinetic theory. The excitation conditions mainly require the pump RSAE amplitude to exceed a certain threshold, which could be readily satisfied in burning plasmas operated in steady-state advanced scenario. This decay process can contribute to thermal plasma heating and confinement improvement.
  • loading

Catalog

    Turn off MathJax
    Article Contents

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return