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A plasma focus device as a metallic plasma jet generator

Published online by Cambridge University Press:  20 April 2016

A. Kasperczuk ,
M. Paduch ,
K. Tomaszewski ,
E. Zielinska ,
R. Miklaszewski  and
A. Szymaszek
A. Kasperczuk
Affiliation:
Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
M. Paduch
Affiliation:
Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
K. Tomaszewski
Affiliation:
ACS Laboratory, ACS Ltd., Warsaw, Poland
E. Zielinska*
Affiliation:
Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
R. Miklaszewski
Affiliation:
Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
A. Szymaszek
Affiliation:
Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland
*
Address correspondence and reprint requests to: E. Zielinska, Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland. E-mail: ewa.zielinska@ifpilm.pl
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Abstract

This paper aims at a test of a plasma focus (PF) device as a metallic plasma jet generator. The experiment was carried out at the DPF-1000U device in which the inner electrode face was conically shaped. Deuterium (D2) with the initial pressure of 0.9 Torr was used as a filling gas. In the experiment, a metallic plasma was ensured due to erosion of the inner electrode during a PF discharge. To create the metallic plasma jet, the eroded copper (Cu) plasma, swept by the deuterium plasma sheath, was accelerated axially and compressed to very small radius (about 1–2 mm). The Cu plasma jet achieved a velocity of 3 × 107 cm/s. To study processes of the plasma jet creation and propagation a 16-frame laser interferometer and a four-frame X-ray pinhole camera were used. Recorded images prove a successful adaptation of the PF device to the metallic plasma jet generator.

Keywords

Cu plasma jetDeuterium plasma pressurePlasma focus devicePlasma radiative coolingPlasma sheath collapse
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 2 , June 2016 , pp. 356 - 361
Copyright
Copyright © Cambridge University Press 2016 

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