Magnetohydrodynamic solution for a Z pinch showing the production of a hot spot
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
- University of California, Davis, California 95616 (United States)
Two-dimensional LASNEX [National Technical Information Service Document No. DE 81026329 (Zimmerman, Report No. UCRL-74811, 1973)] calculations are made for a Z pinch on Saturn, the low-impedance, low-inductance electron accelerator at the Sandia National Laboratories [D. D. Bloomquist {ital et} {ital al}. {ital Proceedings} {ital of} {ital the} {ital Sixth} {ital IEEE} {ital Pulsed} {ital Power} {ital Conference}, Arlington, VA, edited by P. J. Turchi and B. H. Bernstein (Institute of Electronics and Electrical Engineers, New York, 1987), p. 310]. The experiment is characterized by a current of 6 MA with a tungsten wire load (4 mg) at 2 mm. Two-dimensional calculations show the evolution of the Rayleigh{endash}Taylor instability to the bubble and spike phase, causing high-density islands to form in the pinch opposite the bubbles. The two-dimensional energy flow causes a {open_quote}{open_quote}hot spot{close_quote}{close_quote} to evolve, which is shown to agree in its size and brightness with pinhole camera measurements. This is the first explicit calculation of a hot spot in two dimensions employing the full magnetohydrodynamic equations. {copyright} {ital 1996 American Institute of Physics.}
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 280164
- Journal Information:
- Physics of Plasmas, Vol. 3, Issue 5; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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