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This article is cited in 2 scientific papers (total in 2 papers)
Gases and Fluids
Passage of the discharge current through the plasma–electrode interface in the electromagnetic rail accelerator channel
B. G. Zhukov, B. I. Reznikov, R. O. Kurakin, S. A. Ponyaev, S. V. Bobashev Ioffe Institute, St. Petersburg
Abstract:
We investigate the phenomena that accompany the acceleration of a free plasma piston (without a striker) in the electromagnetic rail accelerator channel filled with different gases (argon, helium). An intense glow appears in the shock-compressed layer (SCL) in the case of strong shock waves that produce a high electron concentration ($\sim$10$^{17}$–10$^{18}$ cm$^{-3}$) behind the front. We have proposed that explosive electron emission (EEE) ensures the high-intensity emission of electrons, the passage of a part of the discharge current through the SCL, and the glow of the SCL. The velocity of a shock wave for which the strong electric field in the Debye layer at the cathode causes EEE from its surface and the passage of the current in the SCL has been determined. It has been concluded that, for high velocities of the plasma, the EEE is a universal mechanism that ensure the passage of a strong current through the interface between the cold electrode and the plasma.
Received: 24.03.2016
Citation:
B. G. Zhukov, B. I. Reznikov, R. O. Kurakin, S. A. Ponyaev, S. V. Bobashev, “Passage of the discharge current through the plasma–electrode interface in the electromagnetic rail accelerator channel”, Zhurnal Tekhnicheskoi Fiziki, 86:11 (2016), 43–49; Tech. Phys., 61:11 (2016), 1647–1653
Linking options:
https://www.mathnet.ru/eng/jtf6387 https://www.mathnet.ru/eng/jtf/v86/i11/p43
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Abstract page: | 48 | Full-text PDF : | 10 |
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