Investigation of the erosion drop fraction for liquid-metal explosive-emission cathodes

Author

Popov, Sergey A. ; Proskurovsky, Dmitry I. ; Batrakov, Alexander V.

Author_Institution

Inst. of High-Current Electron., Acad. of Sci., Tomsk, Russia

Volume

27

Issue

4

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

851

Lastpage

857

Abstract

The velocity spectrum of drops emitted by a liquid-metal explosive-emission cathode has been investigated. A relation between the sizes of the drops and their maximum velocities has been found for the velocity range 10³-8×10⁴ cm/s. The relation obtained supports the earlier established mechanism for the emission of drops under the action of high pressures developing in explosive emission centers. The possibilities of an additional acceleration of drops due to the explosion of necks formed on breaking the drops off the cathode surface and at the expense of the kinetic energy of the ions of the expanding cathode plasma have been discussed

Keywords

cathodes; discharges (electric); drops; electron emission; explosions; liquid metals; wear; breaking; drop acceleration; drop emission; drop maximum velocities; drop size; erosion drop fraction; expanding cathode plasma; explosion; ion kinetic energy; liquid-metal explosive-emission cathodes; necks; velocity range; velocity spectrum; Acceleration; Cathodes; Electron emission; Explosions; Explosives; Helium; Kinetic energy; Neck; Plasma accelerators; Plasma properties;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.782249

Filename

782249