Abstract
A study of the process of implosion of a cylindrical tungsten wire array by electrical and optical methods shows that it involves two phases. In the first phase, the plasma is produced from the dense wire cores under the action of the heat flux from the current-carrying plasma. This plasma then fills the internal space of the liner array. The measured inductance of the liner and its visible diameter vary only slightly in this phase. During the second phase, the total material of the liner is compressed toward the axis and the inductance of the discharge gap increases. The process of the implosion of wire arrays is studied by analyzing the electric parameters (current and voltage) of the load in the Angara-5-1 facility. The time behavior of the load inductance, the average current radius, and the start time of the liner compression are determined. The compression start time determined from the visible size of the liner is found to coincide with that determined from electric measurements. The compression ratio of the liner in terms of the average current radius turns out to be lower than that measured by optical and X-ray diagnostics. The reason is that, by the instant of maximum compression, only a portion of the current flows at the periphery of the initial wire array.
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References
A. V. Branitsky, V. D. Vikharev, E. V. Grabovsky, et al., in Proceedings of the 8th International Conference on High-Power Particle Beams, Novosibirsk, 1990, Vol. 1, p. 437.
A. V. Branitskii, V. D. Vikharev, S. V. Zakharov, et al., Fiz. Plazmy 17, 531 (1991) [Sov. J. Plasma Phys. 17, 311 (1991)].
R. B. Spielman, C. Deeney, G. A. Chandler, et al., Phys. Plasmas 5, 2105 (1998).
M. B. Bekhtev, V. D. Vikharev, S. V. Zakharov, et al., Zh. Éksp. Teor. Fiz. 95, 1653 (1989) [Sov. Phys. JETP 68, 955 (1989)].
I. K. Aivazov, M. B. Bekhtev, V. V. Bulan, et al., Fiz. Plazmy 16, 645 (1990) [Sov. J. Plasma Phys. 16, 373 (1990)].
A. Alexandrov, A. Branitskii, E. V. Grabovskii, et al., in Inertial Fusion Sciences and Application 99, Ed. by C. Labaune, W. J. Hogan, and K. A. Tanaka (Elsevier, St. Louis, 1999), p. 591.
V. V. Alexandrov, E. A. Azizov, A. V. Branitsky, et al., in Proceedings of the 13th International Conference on High-Power Particle Beams, Nagaoka, 2000, p. 147.
V. V. Alexandrov, M. V. Fedulov, I. N. Frolov, et al., in Proceedings of the 5th International Conference on Dense Z-Pinches, Albuquerque, 2002 (AIP, New York, 2002), Vol. 651, p. 91.
V. V. Aleksandrov, A. V. Branitskii, G. S. Volkov, et al., Fiz. Plazmy 27, 99 (2001) [Plasma Phys. Rep. 27, 89 (2001)].
S. V. Lebedev, F. N. Beg, S. N. Bland, et al., Phys. Plasmas 8, 3734 (2001).
M. G. Haines, S. V. Lebedev, J. P. Chittenden, et al., in Proceedings of the 5th International Conference on Dense Z-Pinches, Albuquerque, 2002; AIP Conf. Proc. 651, 345 (2002).
V. V. Aleksandrov, E. V. Grabovskii, G. G. Zukakishvili, et al., Zh. Éksp. Teor. Fiz. 124, 829 (2003) [JETP 97, 745 (2003)].
A. V. Branitskii, E. V. Grabovskii, M. V. Frolov, et al., in Proceedings of the 12th International Conference on High-Power Particle Beams, Haifa, 1998, Vol. 2, p. 599.
V. V. Aleksandrov, A. G. Alekseev, V. N. Amosov, et al., Fiz. Plazmy 29, 1114 (2003) [Plasma Phys. Rep. 29, 1034 (2003)].
V. V. Alexandrov, I. N. Frolov, M. V. Fedulov, et al., in Proceedings of the 5th International Conference on Dense Z-Pinches, Albuquerque, 2002; AIP Conf. Proc. 651, 87 (2002).
V. V. Alexandrov, I. N. Frolov, E. V. Grabovsky, et al., IEEE Trans. Plasma Sci. 30, 559 (2002).
E. V. Grabovskii, V. I. Zaitsev, G. M. Oleinik, et al., Prib. Tekh. Éksp., No. 5, 116 (1992).
A. V. Branitskii, E. V. Grabovskii, M. V. Fedulov, et al., in Proceedings of the 11th International Conference on High-Power Particle Beams, Prague, 1996, p. 542.
Z. A. Al'bikov, E. P. Velikhov, A. I. Veretennikov, et al., At. Énerg. 68, 26 (1990).
G. M. Oleinik, Prib. Tekh. Éksp., No. 3, 49 (2000).
E. I. Baranchikov, A. V. Gordeev, V. D. Korolev, and V. P. Smirnov, Zh. Éksp. Teor. Fiz. 75, 2102 (1978) [Sov. Phys. JETP 48, 1058 (1978)].
I. Frolov, E. Grabovsky, K. Mitrofanov, et al., in Advanced Diagnostics for Magnetic and Inertial Fusion, Ed. by P. E. Stott, A. Wootton, G. Gorini, et al. (Kluwer, New York, 2001), p. 419.
E. V. Grabovskii, G. G. Zukakishvili, S. L. Nedoseev, et al., Fiz. Plazmy 30, 33 (2004) [Plasma Phys. Rep. 30, 30 (2004)].
V. V. Aleksandrov, G. S. Volkov, E. V. Grabovskii, et al., Fiz. Plazmy 30, 245 (2004) [Plasma Phys. Rep. 30, 218 (2004)].
F. N. Beg, S. V. Lebedev, S. N. Bland, et al., IEEE Trans. Plasma Sci. 30, 552 (2002).
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Translated from Fizika Plazmy, Vol. 30, No. 7, 2004, pp. 615–629.
Original Russian Text Copyright © 2004 by Aleksandrov, Grabovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Mitrofanov, Ole\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \)nik, Smirnov, Sasorov, Frolov.
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Aleksandrov, V.V., Grabovskii, E.V., Mitrofanov, K.N. et al. Relation between the electric parameters of a Z-pinch discharge and plasma production in the load during the implosion of a cylindrical wire array. Plasma Phys. Rep. 30, 568–581 (2004). https://doi.org/10.1134/1.1778432
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DOI: https://doi.org/10.1134/1.1778432