Insights and applications of two-dimensional simulations to Z-pinch experiments
| Autor: | Norman F. Roderick, Gordon A. Chandler, C. Deeney, Melissa Douglas, Thomas J. Nash, R.L. Bowers, William A. Stygar, W. Matuska, R. B. Spielman, D.L. Peterson, K. D. McLenithan, Kenneth W. Struve, M. S. Derzon, Maurice Keith Matzen |
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| Rok vydání: | 1999 |
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| Zdroj: | Physics of Plasmas. 6:2178-2184 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | A two-dimensional (2D) Eulerian radiation-magnetohydrodynamic code has been used to successfully simulate hollow metallic z-pinch experiments fielded on several facilities with a wide variety of drive conditions, time scales, and loads. The 2D simulations of these experiments reproduce important quantities of interest including the radiation pulse energy, power, and pulse width. This match is obtained through the use of an initial condition: the amplitude of a random density perturbation imposed on the initial plasma shell. The perturbations seed the development of magnetically driven Rayleigh–Taylor instabilities which greatly affect the dynamics of the implosion and the resulting production of radiation. Analysis of such simulations allows insights into the physical processes by which these calculations reproduce the experimental results. As examples, the insights gained from the simulations of Sandia “Z” accelerator [R. B. Spielman et al., Phys. Plasmas 5, 2105 (1998)] experiments have allowed for the ... |
| Databáze: | OpenAIRE |
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