Variation of high-power aluminum-wire array z-pinch dynamics with wire number, load mass, and array radius
- and others
A systematic study of annular aluminum-wire z-pinches on the Saturn accelerator shows that the quality of the implosion, (as measured by the radial convergence, the radiated energy, pulse width, and power), increases with wire number. Radiation magnetohydrodynamic (RMHC) xy simulations suggest that the implosion transitions from that of individual wire plasmas to that of a continuous plasma shell when the interwire spacing is reduced below {approximately} 1.4 mm. In this plasma-shell regime, many of the global radiation and plasma characteristics are in agreement with those simulated by 2D-RMHC rz simulations. In this regime, measured changes in the radiation pulse width with variations in load mass and array radius are consistent with the simulations and are explained by the development of 2D fluid motion in the rz plane. Associated variations in the K-shell yield are qualitatively explained by simple radiation-scaling models.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 554885
- Report Number(s):
- LA-UR-97-3102; CONF-9705120-; ON: DE98001335; TRN: 98:008924
- Resource Relation:
- Conference: 4. international conference on dense Z-pinches, Vancouver (Canada), 28-31 May 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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Variation of high-power aluminum-wire array Z-pinch dynamics with wire number, load mass, and array radius
Variation of high-power aluminum-wire array Z-pinch dynamics with wire number, array radius, and load mass