Plasma Physics Reports

, Volume 43, Issue 6, pp 599–604 | Cite as

Two-slope soft X-ray spectra observed in experiments on electron cyclotron resonance plasma heating in the L-2M stellarator

  • A. I. Meshcheryakov
  • I. Yu. Vafin
  • I. A. Grishina
  • A. A. Letunov
  • M. A. Tereshchenko
Stellarators
  • 34 Downloads

Abstract

In experiments on the generation and electron cyclotron resonance heating (ECRH) of plasma in the L-2M stellarator, non-Maxwellian two-slope soft X-ray (SXR) spectra were observed. The temperatures of the thermal and epithermal components of the spectra were measured as functions of the heating power and plasma density. A hypothesis based on the experimental results is suggested to explain the formation mechanism of two-slope SXR spectra in the ECRH experiments at the L-2M stellarator. The measured SXR spectra are compared with the results of numerical simulations.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    G. M. Batanov, V. I. Belousov, Yu. F. Bondar’, V. D. Borzosekov, D. G. Vasil’kov, S. E. Grebenshchikov, I. A. Ivannikov, L. V. Kolik, E. M. Konchekov, D. V. Malakhov, N. V. Matveev, A. I. Meshcheryakov, A. E. Petrov, K. A. Sarksyan, N. N. Skvortsova, et al., Plasma Phys. Rep. 39, 1088 (2013).ADSCrossRefGoogle Scholar
  2. 2.
    S. Muto, S. Morita, S. Kubo, T. Shimozuma, H. Idei, and Y. Yoshimura, Rev. Sci. Instrum. 74, 1993 (2003).ADSCrossRefGoogle Scholar
  3. 3.
    P. Blanchard, S. Alberti, S. Coda, H. Weisen, P. Nikkola, and I. Klimanov, Plasma Phys. Controlled Fusion 44, 2231 (2002).ADSCrossRefGoogle Scholar
  4. 4.
    Yu. V. Esipchuk, N. A. Kirneva, A. A. Martynov, and V. M. Trukhin, Plasma Phys. Rep. 21, 543 (1995).ADSGoogle Scholar
  5. 5.
    A. I. Meshcheryakov, D. G. Vasilkov, A. A. Vasileva, I. Yu. Vaphin, E. V. Voronova, I. A. Grishina, V. P. Logvinenko, and V. D. Stepakhin, in Proceedings of the 42nd EPS Conference on Plasma Physics, Lisbon, 2015, ECA 39E, P5.148 (2015). http://ocs.ciemat. es/EPS2015ABS/pdf/P5.148.pdf.Google Scholar
  6. 6.
    N. J. Fisch and A. H. Boozer, Phys. Rev. Lett. 45, 720 (1980).ADSCrossRefGoogle Scholar
  7. 7.
    U. Stroth, M. Murakami, A. Dory, H. Yamada, S. Okamura, F. Sano, and T. Obiki, Nucl. Fusion 36, 1063 (1996).ADSCrossRefGoogle Scholar
  8. 8.
    O. I. Fedyanin, D. K. Akulina, G. M. Batanov, M. S. Berezhetskii, D. G. Vasil’kov, I. Yu. Vafin, G. S. Voronov, E. V. Voronova, G. A. Gladkov, S. E. Grebenshchikov, L. M. Kovrizhnykh, N. F. Larionova, A. A. Letunov, V. P. Logvinenko, N. I. Malykh, et al., Plasma Phys. Rep. 33, 805 (2007).ADSCrossRefGoogle Scholar
  9. 9.
    A. S. Sakharov and M. A. Tereshchenko, Plasma Phys. Rep. 28, 539 (2002).ADSCrossRefGoogle Scholar
  10. 10.
    N. Kenmochi, T. Minami, C. Takahashi, S. Tei, K. Nishioka, T. Mizuuchi, S. Kobayashi, K. Nagasaki, Y. Nakamura, H. Okada, S. Kado, S. Yamamoto, S. Ohshima, S. Konoshima, G. M. Weir, et al., in Proceedings of the 42nd EPS Conference on Plasma Physics, Lisbon, 2015, ECA 39E, P5.131 (2015). http://ocs.ciemat. es/EPS2015PAP/pdf/P5.131.pdf.Google Scholar
  11. 11.
    H. Renner, E. Anabitarte, E. Ascasibar, S. Besshou, R. Brakel, R. Burhenn, G. Cattanei, A. Dodhy, D. Dorst, and A. Elsner, Plasma Phys. Controlled Fusion 31, 1579 (1989).ADSCrossRefGoogle Scholar
  12. 12.
    V. Erckmann and U. Gasparino, Plasma Phys. Controlled Fusion 36, 1869 (1994).ADSCrossRefGoogle Scholar
  13. 13.
    E. Z. Gusakov, A. Yu. Popov, and A. N. Saveliev, Plasma Phys. Controlled Fusion 56, 015010 (2014).ADSCrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • A. I. Meshcheryakov
    • 1
  • I. Yu. Vafin
    • 1
  • I. A. Grishina
    • 1
  • A. A. Letunov
    • 1
  • M. A. Tereshchenko
    • 1
  1. 1.Prokhorov General Physics InstituteRussian Academy of SciencesMoscowRussia

Personalised recommendations