Point projection radiography of electromagnetically accelerated flyer plates with an external X-pinch driver.
| Autor: | Read J; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom., Burdiak G; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom., Bland SN; The Blackett Laboratory, Imperial College, London SW7 2BW, United Kingdom., Caballero Bendixsen LS; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom., Paxton-Fear L; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom., Niasse N; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom., Dobranszki C; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom., Hawker N; First Light Fusion, Yarnton, Oxfordshire OX5 1QU, United Kingdom. |
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| Jazyk: | angličtina |
| Zdroj: | The Review of scientific instruments [Rev Sci Instrum] 2024 Feb 01; Vol. 95 (2). |
| DOI: | 10.1063/5.0185351 |
| Abstrakt: | A platform for flyer plate benchmarking experiments has been developed, with an external X-pinch driver for point projection radiography. The experiments were performed using CEPAGE, a low inductance pulsed power machine at First Light Fusion (2 MA, 1.4 µs), with a new vacuum transmission line and flyer load hardware designed specifically to give a line of sight for radiography. A broadband 10-20 keV x-ray source was produced by a portable X-pinch driver (140 kA, 350 ns) [Strucka et al., Matter Radiat. Extremes 7, 016901 (2021)] and was used to image the flyer. Radiography compliments the pre-existing diagnostic suite, which consists of current probes, velocimetry, and side-on optical probing of the impact shock transmitted into a transparent sample. The platform allows for significant insights into the 2D and 3D nature of the flyer launch, such as deformation and instability formation. It was used to diagnose a 10 × 9 × 1 mm3 aluminum flyer, which reached a peak velocity of 4.2 km s-1 before impact with a poly(methylmethacrylate) sample. The experimental configuration, on-shot source characterization, and the results from two flyer plate experiments on CEPAGE are discussed. (© 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).) |
| Databáze: | MEDLINE |
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