Abstract
Boronization of the vacuum chamber wall results in a considerable change in the composition of the plasma generated in working pulses of the L-2M stellarator and, accordingly, in the plasma effective charge. The paper presents results of measurements of the plasma effective charge carried out by two methods in the ohmic heating mode: from the data on the plasma conductivity and from the soft X-ray spectrum of plasma emission. Comparison of the values of the plasma effective charge obtained by these two methods makes it possible to determine the conditions in which the two values are in good agreement. Under these conditions, the plasma effective charge can be correctly estimated from spectral measurements.
Similar content being viewed by others
References
D. K. Akulina, Eh. D. Andryukhina, G. S. Voronov, M. S. Berezhetskij, S. E. Grebenshchikov, I. S. Danilkin, B. I. Kornev, O. I. Fedyanin, I. S. Sbitnikova, Yu. V. Khol’nov, and I. S. Shpigel’, in Proceedings of the 7th International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Innsbruck, 1978, Vol. 2, p. 287.
A. I. Meshcheryakov, D. K. Akulina, G. M. Batanov, M. S. Berezhetskii, G. S. Voronov, G. A. Gladkov, S. E. Grebenshchikov, V. A. Grinchuk, I. A. Grishina, L. V. Kolik, N. F. Larionova, A. A. Letunov, V. P. Logvinenko, A. E. Petrov, A. A. Pshenichnikov, et al., Plasma Phys. Rep. 31, 452 (2005).
Yu. N. Dnestrovskij and D. P. Kostomarov, Numerical Simulation of Plasmas (Nauka, Moscow, 1982; Springer-Verlag, New York, 1986).
D. V. Sivukhin, in Reviews of Plasma Physics, Ed. by M. A. Leontovich (Consultants Bureau, New York, 1968), Vol. 4, p. 93.
G. A. Bobrovskii, K. A. Razumova, and V. V. Sannikov, Sov. J. Plasma Phys. 2, 499 (1976).
D. K. Akulina, G. M. Batanov, M. S. Berezhetskii, G. S. Voronov, G. A. Gladkov, S. E. Grebenshchikov, I. S. Danilkin, N. F. Larionova, A. I. Meshcheryakov, K. A. Sarksyan, O. I. Fedyanin, N. K. Kharchev, Yu. V. Khol’nov, and S. V. Shchepetov, Plasma Phys. Rep. 29, 1028 (2003).
S. von Goeler, W. Stodiek, H. Eubank, H. Fishman, S. Grebenshchikov, and E. Hinnov, Nucl. Fusion 15, 301 (1975).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.I. Meshcheryakov, I.Yu. Vafin, 2015, published in Prikladnaya Fizika, 2015, No. 3, pp. 15–19.
Rights and permissions
About this article
Cite this article
Meshcheryakov, A.I., Vafin, I.Y. Determination of the plasma effective charge from the soft X-ray spectrum and plasma conductivity at the L-2M stellarator after boronization of the vacuum chamber. Plasma Phys. Rep. 42, 718–722 (2016). https://doi.org/10.1134/S1063780X16070084
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063780X16070084