Study of Implosion of Combined Nested Arrays
| Autor: | Pavel V. Sasorov, V. V. Aleksandrov, Ya. N. Laukhin, A. V. Branitsky, E. V. Grabovski, I. N. Frolov, A. N. Gritsuk, K. N. Mitrofanov |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Shock wave Physics and Astronomy (miscellaneous) business.industry Implosion chemistry.chemical_element Plasma Tungsten Condensed Matter Physics Laser 01 natural sciences Instability 010305 fluids & plasmas law.invention Shock (mechanics) Pulse (physics) Optics chemistry Physics::Plasma Physics law 0103 physical sciences 010306 general physics business |
| Zdroj: | Plasma Physics Reports. 43:1147-1171 |
| ISSN: | 1562-6938 1063-780X |
| Popis: | New experimental data on the implosion of plasma of nested kapron−tungsten arrays are obtained at the Angara-5-1 facility. The mode of plasma implosion is implemented in which a shock wave region forms in the space between the inner and outer arrays where a transition from the super-Alfvenic (V r > V A ) to sub-Alfvenic (V r < V A ) plasma flow takes place. Specific features of the formation and decay of the shock region are studied using laser shadow imaging and X-ray frame photography. The plasma density in the transition region is estimated. By comparing the experimental data with the results of simulations of quasi-steady implosion of a nested array with allowance for extended plasma production, the physical conditions are determined at which the implosion mode with the formation the shock region takes place. Stable compression of the plasma of the inner array was observed during the implosion of combined nested arrays with a fiber outer array and tungsten inner array. Suppression of magnetic Rayleigh-Taylor instability during the compression of the inner array plasma results in the formation of a compact radiating Z-pinch and generation of a soft X-ray pulse with a peak power of 4 TW and duration of about 5 ns. |
| Databáze: | OpenAIRE |
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