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Third adiabatic invariant and the collisionless distribution function of particles in a tokamak

  • Plasma, Hydro- and Gas Dynamics
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Abstract

It has been shown that the distribution function of an ensemble of particles with a given energy in a collisionless regime in a tokamak is formed as a function primarily of the third adiabatic invariant, particularly in the near-axis region. In the periphery of the plasma column, the contribution of the toroidal component of the canonical momentum/longitudinal adiabatic invariant to the distribution function becomes noticeable. The coordinate dependence of the ensemble distribution function in the velocity space is determined predominantly by the trajectories of charged particles.

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Authors and Affiliations

  1. National Research Centre Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182, Russia

    V. I. Ilgisonis

  2. Peoples’ Friendship University of Russia, ul. Miklukho-Maklaya 6, Moscow, 117198, Russia

    E. A. Sorokina

Authors
  1. V. I. Ilgisonis
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  2. E. A. Sorokina
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Correspondence to V. I. Ilgisonis.

Additional information

Original Russian Text © V.I. Ilgisonis, E.A. Sorokina, 2011, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2011, Vol. 94, No. 9, pp. 742–747.

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Ilgisonis, V.I., Sorokina, E.A. Third adiabatic invariant and the collisionless distribution function of particles in a tokamak. Jetp Lett. 94, 684–688 (2012). https://doi.org/10.1134/S0021364011210065

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  • DOI: https://doi.org/10.1134/S0021364011210065

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