Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101751
Title: Formation of double shell during implosion of plasma metal puff Z-pinches
Authors: Shmelev, D. L.
Zhigalin, A. S.
Chaikovsky, S. A.
Oreshkin, V. I.
Rousskikh, A. G.
Issue Date: 2020
Publisher: American Institute of Physics Inc.
Citation: Formation of double shell during implosion of plasma metal puff Z-pinches / D. L. Shmelev, A. S. Zhigalin, S. A. Chaikovsky, et al. — DOI 10.1063/5.0010853 // Physics of Plasmas. — 2020. — Vol. 27. — Iss. 9. — 092708.
Abstract: This work presents the results of experimental and theoretical research of impact of tailored density profile and application of external axial magnetic field on initial spatial distribution of the plasma density in the plasma metal puff Z-pinch and on its implosion dynamics. It has been discovered that upon implosion of the plasma metal puff Z-pinch some stripes interpreted as the system of two coaxial shells appear on the optical images. With the help of numerical simulation, the formation of the plasma liner consisting of a mixture of carbon and bismuth ions and formed by the expansion of the plasma jet of the arc burning on the bismuth electrode has been considered in this work. It has been shown that the lightweight carbon ions facilitate formation of the density distribution smoothly decreasing with the increase in radius, that, in turn, leads to suppression of the Rayleigh-Taylor instability in the current sheath upon further implosion. It has also been demonstrated that availability of the two types of ions in plasma considerably different in mass leads to formation (in the compression phase) of a double shell with externally located heavy ions. It has also been revealed that the application of the external axial magnetic field leads to reduction in the plasma metal puff Z-pinch initial diameter. © 2020 Author(s).
Keywords: BISMUTH
CARBON
EXPLOSIONS
GEOMETRICAL OPTICS
HEAVY IONS
MAGNETIC FIELDS
PINCH EFFECT
PLASMA DENSITY
PLASMA JETS
AXIAL MAGNETIC FIELD
BISMUTH ELECTRODE
CURRENT SHEATHS
DENSITY DISTRIBUTIONS
DENSITY PROFILE
IMPLOSION DYNAMICS
RAYLEIGH-TAYLOR INSTABILITIES
THEORETICAL RESEARCH
MAGNETOPLASMA
URI: http://hdl.handle.net/10995/101751
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85092351908
PURE ID: 14149745
463af64e-531d-4c4b-b0c6-d97580d38a28
ISSN: 1070664X
DOI: 10.1063/5.0010853
metadata.dc.description.sponsorship: This work was funded by Russian Science Foundation. Project No. 19–19-00127.
RSCF project card: 19-19-00127
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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