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Direct comparison of turbulence measurements by Langmuir probe technique and by reflectometry

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Abstract

A comparative analysis of the experimental results from two diagnostic methods—reflectometry and Langmuir probe technique—is carried out, and advantages and drawbacks of these methods are considered; in particular, a comparison is made between their spectral characteristics. The problems arising in interpreting the experimental reflectometric results are thoroughly discussed. To resolve these problems, a stochastic turbulence model with statistical, spectral, and correlation turbulent plasma properties close to the measured ones is constructed. The model is used to simulate the propagation of an electromagnetic wave in a model turbulent plasma. A comparison of the numerical results with the experimental data shows a high spatial locality of reflectometric measurements.

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References

  1. E. Mazzucato and R. Nazikian, Phys. Rev. Lett. 36, 792 (1976).

    Article  ADS  Google Scholar 

  2. G. McKee, R. Ashley, R. Durst, et al., Rev. Sci. Instrum. 70, 913 (1999).

    Article  ADS  Google Scholar 

  3. P. Cripwell, A. E. Costley, and T. Fukuda, in Proceedings of the 1st IAEA Technical Committee Meeting on Microwave Reflectometry for Fusion Plasma Diagnostics, Abingdon, 1992 (IAEA, Vienna, 1992), p. 168.

    Google Scholar 

  4. V. A. Vershkov, A. A. Bagdasarov, N. L. Vasin, et al., in Proceedings of the 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisboa, 1993, ECA 17C, 79 (1993).

    Google Scholar 

  5. V. A. Vershkov, V. V. Dreval, and S. V. Soldatov, in Proceedings if the 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, 1994, ECA 18B, 1192 (1994).

    Google Scholar 

  6. V. A. Vershkov and V. V. Dreval, Rev. Sci. Instrum. 70, 1700 (1999).

    Article  ADS  Google Scholar 

  7. J. C. Forster, P. M. Schoch, R. L. Hickcok, and W. C. Jennings, IEEE Trans. Plasma Sci. 22, 359 (1994).

    Article  Google Scholar 

  8. V. A. Vershkov and S. V. Soldatov, in Proceedings of the 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, 1994, ECA 18B, 886 (1994).

    Google Scholar 

  9. V. A. Vershkov, S. A. Grashin, V. V. Dreval, et al., J. Nucl. Matter. 241, 873 (1997).

    Google Scholar 

  10. N. Bretz, Rev. Sci. Instrum. 68, 2927 (1997).

    Article  ADS  Google Scholar 

  11. A. O. Urazbaev, V. A. Vershkov, S. V. Soldatov, and D. A. Shelukhin, Fiz. Plazmy 32, 483 (2006) [Plasma Phys. Rep. 32, 443 (2006)].

    Google Scholar 

  12. N. Winsor, J. L. Johnson, and J. M. Dawson, Phys. Fluids 11, 2448 (1968).

    Article  Google Scholar 

  13. A. O. Urazbaev, V. A. Vershkov, S. V. Soldatov, et al., in Stochastic Models of Plasma Structural Turbulence, Ed. by V. Yu. Korolev and N. N. Skvortsova (MAKS, Moscow, 2003), p. 62 [in Russian].

    Google Scholar 

  14. V. A. Vershkov and S. V. Soldatov, in Proceedings of the 23rd EPS Conference on Controlled Fusion and Plasma Physics, Kiev, 1996, ECA 20C, 247 (1996).

    Google Scholar 

  15. V. A. Vershkov, S. V. Soldatov, D. A. Shelukhin, et al., Proceedings of the 30th EPS Conference on Controlled Fusion and Plasma Physics, St. Petersburg, 2003, ECA 27A, P-2.56 (2003).

    Google Scholar 

  16. B. Sestroretskiĭ, Vopr. Radioélektron., Ser. Obsch. Vopr. Radioélektron., No. 2, 113 (1976).

  17. B. V. Sestroretskiĭ, K. N. Klimov, S. A. Korolev, and A. S. Petrov, Simulation of Waveguide Devices by the Impedance Grid Method (MGIEM, Moscow, 1999), p. 38 [in Russian].

    Google Scholar 

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Original Russian Text © A.O. Urazbaev, V.A. Vershkov, S.V. Soldatov, D.A. Shelukhin, 2006, published in Fizika Plazmy, 2006, Vol. 32, No. 8, pp. 675–698.

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Urazbaev, A.O., Vershkov, V.A., Soldatov, S.V. et al. Direct comparison of turbulence measurements by Langmuir probe technique and by reflectometry. Plasma Phys. Rep. 32, 619–641 (2006). https://doi.org/10.1134/S1063780X06080010

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  • DOI: https://doi.org/10.1134/S1063780X06080010

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