Abstract
Shock wave generation and shock-compressed gas flows attendant on the acceleration of an striker-free plasma piston in the channels of electromagnetic rail accelerators (railguns) are studied. Experiments are carried out in channels filled with helium or argon to an initial pressure of 25–500 Torr. At a pressure of 25 Torr, Mach numbers equal 32 in argon and 16 in helium. It is found that with the initial currents and gas initial densities in the channels being the same, the shock wave velocities in both gases almost coincide. Unlike standard shock tubes, a high electric field (up to 300 V/cm) present in the channel governs the motion of a shock-compressed layer. Once the charged particle concentration behind the shock wave becomes sufficiently high, the field causes part of the discharge current to pass through the shock-compressed layer. As a result, the glow of the layer becomes much more intense.
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References
Ion Injectors and Plasma Accelerators, Ed. by A. I. Morozov and N. N. Semashko (Energoatomizdat, Moscow, 1990).
G. A. Luk’yanov, Supersonic Plasmas Jets (Mashinostroenie, Leningrad, 1985).
B. G. Zhukov, B. I. Reznikov, R. O. Kurakin, and S. I. Rozov, Tech. Phys. 52, 865 (2007).
S. V. Bobashev, B. G. Zhukov, R. O. Kurakin, S. A. Ponyaev, B. I. Reznikov, and S. I. Rozov, Tech. Phys. Lett. 36, 72 (2010).
S. V. Bobashev, B. G. Zhukov, R. O. Kurakin, S. A. Ponyaev, B. I. Reznikov, and S. I. Rozov, Tech. Phys. 55, 1754 (2010).
S. V. Bobashev, B. G. Zhukov, R. O. Kurakin, S. A. Ponyaev, B. I. Reznikov, S. I. Rozov, and A. I. Sedov, in Proceedings of the 7th International Conference on Plasma Physics and Plasma Technology (PPPT-7), Minsk, 2012, Vol. 1, pp. 94–97.
A. L. Velikovich and M. A. Liberman, Physics of Shock Waves in Gases and Plasmas (Springer, Berlin, 1986).
M. A. Tsikulin and E. G. Popov, Radiative Properties of Shock Waves in Gases (Nauka, Moscow, 1977).
S. V. Bobashev, B. G. Zhukov, R. O. Kurakin, S. A. Ponyaev, and B. I. Reznikov, Tech. Phys. Lett. 40, (2014) (in press).
B. I. Reznikov, S. V. Bobashev, B. G. Zhukov, R. O. Kurakin, S. A. Ponyaev, and S. I. Rozov, Tech. Phys. 59, 499 (2014).
V. K. Gryaznov, I. L. Iosilevskii, and V. E. Fortov, Prikl. Mekh. Tekh. Fiz., No. 3, 70 (1973).
G. I. Kozlov and E. L. Stupitskii, Tables of Thermodynamic Parameters of Argon and Xenon behind an Incident and Reflected Shock Waves, Preprint IPM AN SSSR (Inst. Prikl. Mekh. AN SSSR, Moscow, 1969).
V. S. Vorob’ev and A. L. Khomkin, Teplofiz. Vys. Temp. 15, 188 (1977).
G. A. Mesyats, Ectons in Vacuum Discharge: Breakdown, the Spark, and the Arc (Nauka, Moscow, 2000).
Yu. P. Raizer, Gas Discharge Physics (Springer, Berlin, 1991; Intellekt, Dolgoprudnyi, 2007).
B. B. D’yakov and B. I. Reznikov, in Proceedings of the 1st All-Russia Seminar on Dynamics of High-Current Arc Discharge in Magnetic Field, Novosibirsk, 1990, pp. 38–68.
V. V. Zhurin and O. K. Kostko, Teplofiz. Vys. Temp. 5(6), 166 (1967).
Ya. B. Zel’dovich and Yu. P. Raizer, Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena (Academic, New York, 1967).
V. E. Fortov and I. T. Yakubov, Physics of Nonideal Plasma (Hemisphere, New York, 1990).
L. V. Gurvich, I. V. Veits, V. A. Medvedev, et al., Thermodynamic Properties of Individual Substances (Nauka, Moscow, 1982), Vol. 4, Book 2, p. 559.
V. E. Fortov, A. G. Khrapak, and I. T. Yakubov, Physics of Nonideal Plasma (Fizmatlit, Moscow, 2004).
A. G. Khrapak and I. T. Yakubov, Electrons in Dense Gases and Plasma (Nauka, Moscow, 1981).
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Original Russian Text © S.V. Bobashev, B.G. Zhukov, R.O. Kurakin, S.A. Ponyaev, B.I. Reznikov, K.V. Tverdokhlebov, 2015, published in Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 85, No. 1, pp. 39–46.
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Bobashev, S.V., Zhukov, B.G., Kurakin, R.O. et al. Intense shock waves and shock-compressed gas flows in the channels of rail accelerators. Tech. Phys. 60, 40–47 (2015). https://doi.org/10.1134/S1063784215010053
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DOI: https://doi.org/10.1134/S1063784215010053