Spontaneous Ion Temperature Gradient in Inhomogeneous Magnetic Fields and Its Effect on the Parallel Heat Transport Spontaneous Ion Temperature Gradient in Inhomogeneous Magnetic Fields and Its Effect on the Parallel Heat Transport

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Abstract

<p>A new closure model for the parallel conductive heat flux of the perpendicular component of ion energy (<i>q</i><sub>i,⊥</sub>) is proposed which considers the effect of the spontaneous parallel gradient of the perpendicular ion temperature in inhomogeneous magnetic fields. Profiles of plasma parameters and the particle confinement efficiency are compared between the new <i>q</i><sub>i,⊥ </sub>model and a conventional one in a simple mirror system. It is found that the conservation of the magnetic moment is reproduced with the new <i>q</i><sub>i,⊥ </sub>model. Comparisons of ion power flux profiles show that the new <i>q</i><sub>i,⊥ </sub>model changes the direction of <i>q</i><sub>i,⊥ </sub>keeping the spontaneous parallel gradient of the perpendicular ion temperature. Almost linear relations between the particle confinement time and the ion-ion Coulomb collision time are also obtained with both <i>q</i><sub>i,⊥ </sub>models.</p>

Journal

  • Plasma and Fusion Research

    Plasma and Fusion Research 14(0), 2403010-2403010, 2019

    The Japan Society of Plasma Science and Nuclear Fusion Research

Codes

  • NII Article ID (NAID)
    130007603372
  • NII NACSIS-CAT ID (NCID)
    AA12346675
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1880-6821
  • Data Source
    IR  J-STAGE 
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