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Radial electric field during dynamic processes in a tokamak and L-H transitions

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Abstract

Expressions for the radial electric field in tokamaks are derived with allowance for an additional contribution of the longitudinal electron viscosity (or the associated Ware drift). It is shown that, in transient processes during which the toroidal electric field at the plasma edge increases, the additional electric field can become rather strong. An increase in the shear of the poloidal plasma rotation can trigger the L-H transition. That the experimentally observed transitions to an improved confinement mode can be ascribed to this effect is illustrated by simulating discharges in the current ramp-up experiments in the Tuman-3M tokamak.

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References

  1. K. H. Burrell, Phys. Plasmas 4, 1499 (1997).

    Article  MathSciNet  ADS  Google Scholar 

  2. S. P. Hirshman and D. J. Sigmar, Nucl. Fusion 21, 1079 (1981).

    Google Scholar 

  3. V. Rozhansky, A. Popov, and S. Voskoboynikov, in Proceedings of the International Conference on Plasma Physics and 25th EPS Conference on Controlled Fusion and Plasma Physics, Praha, 1998 [ECA, 22C, 1876 (1998)].

  4. V. Rozhansky, Czech. J. Phys. 48 (3), 72 (1998).

    Google Scholar 

  5. V. Rozhansky and M. Tendler, in Reviews of Plasma Physics, Ed. by B. B. Kadomtsev (Énergoizdat, Moscow, 1991; Consultants Bureau, New York, 1996), Vol. 19, p. 147.

    Google Scholar 

  6. L. Askinasi, M. Andrejko, V. Golant, et al., in Proceedings of the 26th EPS Conference on Controlled Fusion and Plasma Physics, Budapest, 2000 [ECA, 23C].

  7. G. M. Staebler, F. L. Hinton, J. C. Wiley, et al., Phys. Plasmas 1, 909 (1994).

    Article  ADS  Google Scholar 

  8. G. M. Staebler, R. E. Waltz, and J. C. Wiley, Nucl. Fusion 37, 287 (1997).

    Article  Google Scholar 

  9. F. L. Hinton and R. D. Hazeltine, Rev. Mod. Phys. 48 (2), 239 (1976).

    Article  MathSciNet  ADS  Google Scholar 

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Authors and Affiliations

  1. St. Petersburg State Technical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia

    V. A. Rozhansky & S. P. Voskoboinikov

  2. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    A. Yu. Popov

Authors
  1. V. A. Rozhansky
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  2. S. P. Voskoboinikov
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  3. A. Yu. Popov
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Additional information

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Translated from Fizika Plazmy, Vol. 27, No. 3, 2001, pp. 219–224.

Original Russian Text Copyright © 2001 by Rozhansky, Voskoboioenikov, Popov.

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Rozhansky, V.A., Voskoboinikov, S.P. & Popov, A.Y. Radial electric field during dynamic processes in a tokamak and L-H transitions. Plasma Phys. Rep. 27, 205–210 (2001). https://doi.org/10.1134/1.1354218

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  • DOI: https://doi.org/10.1134/1.1354218

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