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JOURNALS // Prikladnaya Mekhanika i Tekhnicheskaya Fizika // Archive

Prikl. Mekh. Tekh. Fiz., 2002 Volume 43, Issue 3, Pages 39–44 (Mi pmtf2628)

This article is cited in 1 paper

On analysis of physical processes on the electrode surface in a rail launcher

A. G. Anisimov, A. D. Matrosov, G. A. Shvetsov

Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090

Abstract: This paper analyzes some physical effects that occur on the electrode surface in plasma-armature rail launchers when the linear current density is higher than critical value. It is shown that under typical experimental conditions, Rayleigh–Taylor and Kelvin–Helmholtz instabilities and magnetohydrodynamic instabilities, which arise from the interaction of the current with the self-magnetic field, can develop over times much smaller than the launcher operation time and can be responsible for the entry of the electrode material into the discharge. Flash radiography of the electrode surface confirmed the presence of inhomogeneities and ejection of the material from the surface. Under certain conditions, the emergence of conducting metal jets from the electrode surface was detected.

UDC: 533.9

Received: 28.01.2002


 English version:
Journal of Applied Mechanics and Technical Physics, 2002, 43:3, 375–379

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