Studying the Generation Stage of a Plasma Jet in a Plasma Focus Discharge

A dense compact plasmoid generated at the pinch collapse stage is revealed in a plasma focus discharge by laser optical methods. The initial size of the plasmoid is ~1 mm, its electron density is more than 2 × 10 19 cm –3 , and the plasmoid propagates along the axis from the anode at an average velo...

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Bibliographic Details
Published in:Physics of atomic nuclei 2017-12, Vol.80 (11), p.1701-1703
Main Authors: Polukhin, S. N., Gurei, A. E., Nikulin, V. Ya, Peregudova, E. N., Silin, P. V., Kharrasov, A. M.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANODES
ARGON
Argon plasma
Discharge
ELECTRON DENSITY
Electrons
Gas Discharge and Plasma Physics
LASERS
Optics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Plasma
PLASMA FOCUS
PLASMA JETS
Plasma physics
PLASMOIDS
SHOCK WAVES
VELOCITY
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Summary:A dense compact plasmoid generated at the pinch collapse stage is revealed in a plasma focus discharge by laser optical methods. The initial size of the plasmoid is ~1 mm, its electron density is more than 2 × 10 19 cm –3 , and the plasmoid propagates along the axis from the anode at an average velocity of more than 10 7 cm/s. A shock wave is generated in the residual argon plasma during the motion of the bunch, its density decreases to 10 18 cm –3 at a distance of 3 cm from its place of generation, and the plasmoid expands by 3–5 times and almost merges together with the leading edge of the shock wave.
ISSN:1063-7788
1562-692X
DOI:10.1134/S106377881711014X