Technical Physics Letters

, Volume 39, Issue 2, pp 220–222 | Cite as

Radial current in tokamak during neutral beam injection

  • L. G. Askinazi
  • M. I. Vildjunas
  • V. A. Kornev
  • S. V. Lebedev
  • A. S. Tukachinsky
Article
  • 64 Downloads

Abstract

Generation of radial current I r during the ionization of fast deuterons in their neutral beam injected into a tokamak is considered. The current I r and force F determined by the [I r × B] product vary in a complicated manner along the tokamak radius. For this reason, the torque that arises together with force F also nonuniformly varies along the radius, which can lead to a shear in the rotation velocity. A sufficiently large magnitude of this shear can result in reduction of both micro- and macroinstabilities in tokamak plasma [1, 2]. The influence of injected beam characteristics and other experimental parameters on the spatial distribution of I r in the TUMAN-3M tokamak is considered.

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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • L. G. Askinazi
    • 1
  • M. I. Vildjunas
    • 1
  • V. A. Kornev
    • 1
  • S. V. Lebedev
    • 1
  • A. S. Tukachinsky
    • 1
  1. 1.Ioffe Physical Technical InstituteRussian Academy of SciencesSt. PetersburgRussia

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