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- D. J. Ampleford
- Sandia National Laboratories , Albuquerque, New Mexico 87185, USA
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- S. V. Lebedev
- Imperial College , London, SW7 2BW, United Kingdom
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- S. N. Bland
- Imperial College , London, SW7 2BW, United Kingdom
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- S. C. Bott
- Imperial College , London, SW7 2BW, United Kingdom
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- J. P. Chittenden
- Imperial College , London, SW7 2BW, United Kingdom
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- C. A. Jennings
- Sandia National Laboratories , Albuquerque, New Mexico 87185, USA
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- V. L. Kantsyrev
- University of Nevada , Reno, Nevada 89557, USA
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- A. S. Safronova
- University of Nevada , Reno, Nevada 89557, USA
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- V. V. Ivanov
- University of Nevada , Reno, Nevada 89557, USA
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- D. A. Fedin
- University of Nevada , Reno, Nevada 89557, USA
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- P. J. Laca
- University of Nevada , Reno, Nevada 89557, USA
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- M. F. Yilmaz
- University of Nevada , Reno, Nevada 89557, USA
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- V. Nalajala
- University of Nevada , Reno, Nevada 89557, USA
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- I. Shrestha
- University of Nevada , Reno, Nevada 89557, USA
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- K. Williamson
- University of Nevada , Reno, Nevada 89557, USA
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- G. Osborne
- University of Nevada , Reno, Nevada 89557, USA
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- A. Haboub
- University of Nevada , Reno, Nevada 89557, USA
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- A. Ciardi
- LERMA Observatoire de Paris, , 92195, Meudon, France
書誌事項
- 公開日
- 2007-10-01
- DOI
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- 10.1063/1.2795129
- 公開者
- AIP Publishing
この論文をさがす
説明
<jats:p>A modification of the wire array Z pinch, the conical wire array, has applications to the understanding of wire array implosions and potentially to pulse shaping relevant to inertial confinement fusion. Results are presented from imploding conical wire array experiments performed on university scale 1 MA generators—the MAGPIE generator (1 MA, 240 ns) at Imperial College London [I. H. Mitchell et al., Rev. Sci Instrum. 67, 1533 (1996)] and the Nevada Terawatt Facility’s Zebra generator (1 MA, 100 ns) at the University of Nevada, Reno [B. Bauer et al., in Dense Z-Pinches, edited by N. Pereira, J. Davis, and P. Pulsifer (AIP, New York, 1997), Vol. 409, p. 153]. This paper will discuss the implosion dynamics of conical wire arrays. Data indicate that mass ablation from the wires in this complex system can be reproduced with a rocket model with fixed ablation velocity. Modulations in the ablated plasma are present, the wavelength of which is invariant to a threefold variation in magnetic field strength. The axial variation in the array leads to a zippered precursor column formation. An initial implosion of a magnetic bubble near the cathode is followed by the implosion zippering upwards. Spectroscopic data demonstrating a variation of plasma parameters (e.g., electron temperature) along the Z-pinch axis is discussed, and experimental data are compared to magnetohydrodynamic simulations.</jats:p>
収録刊行物
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- Physics of Plasmas
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Physics of Plasmas 14 (10), 2007-10-01
AIP Publishing
