Skip to main content
SpringerLink
Log in

Suppression of plasma fluctuations in the transition to the improved-confinement regime when the current is raised rapidly in the FT-2 tokamak

  • Published:
Technical Physics Letters Aims and scope Submit manuscript

Abstract

Collective scattering of CO2-laser radiation is used to study the microturbulence of the plasma in the FT-2 tokamak when the current is rapidly raised, while the magnetic-field shear is varied appreciably. The experiment exhibited suppression of the plasma fluctuations, the appearance time of which was correlated with the transition of the discharge to the improvedconfinement regime. The resulting data are evidence that the suppression of the oscillations occurred predominantly in the central zone of the tokamak, and a suppression-extending phenomenon or hysteresis is detected. The evolution of the spectral characteristics of the fluctuations during the suppression is analyzed, using model calculations of the magnetic-field shear.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. F. M. Levinton, M. C. Zarnstorff, S. H. Batha et al., Phys. Rev. Lett. 75, 4417 (1995).

    Article  ADS  Google Scholar 

  2. S. I. Lashkul, V. N. Budnikov, V. V. Bulanin et al., Abstracts of the Twenty-Fourth European Physical Society Conference on Controlled Fusion and Plasma Physics, 1997, p. 199.

  3. V. N. Budnikov, V. V. Bulanin, V. V. Dyachenko et al., in Proceedings of the Twenty-Third European Physical Society Conference on Controlled Fusion and Plasma Physics, 1996, V20C, pp. 855–858.

  4. K.H. Burrell, Phys. Plasmas 4, 14909 (1997).

  5. V. Rozhanksy, M. Tendler, and T. Voskoboynikov, in Proceedings of the Twenty-Third European Physical Society Conference on Controlled Fusion and Plasma Physics, 1996, V20C, pp. 444–447.

Download references

Author information

Authors and Affiliations

  1. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg State Technical University, St. Petersburg

    V. N. Budnikov, V. V. Bulanin, A. V. Vers, L. A. Esipov, E. R. Its, S. I. Lashkul, A. V. Petrov & A. Yu. Tukachinskii

Authors
  1. V. N. Budnikov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. V. V. Bulanin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. V. Vers
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. L. A. Esipov
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. E. R. Its
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. S. I. Lashkul
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. A. V. Petrov
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. A. Yu. Tukachinskii
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Pis’ma Zh. Tekh. Fiz. 23, 51–57 (November 12, 1997)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Budnikov, V.N., Bulanin, V.V., Vers, A.V. et al. Suppression of plasma fluctuations in the transition to the improved-confinement regime when the current is raised rapidly in the FT-2 tokamak. Tech. Phys. Lett. 23, 839–841 (1997). https://doi.org/10.1134/1.1261903

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1134/1.1261903

Keywords

Search

Navigation