Observation of impact of eddy current on laser targets in a strong fast rising magnetic field
| Autor: | K. J. Swanson, P. Wiewior, N. L. Wong, A. V. Maximov, G. S. Sarkisov, O. Chalyy, V. V. Ivanov, O. Dmitriev, Vidya Nalajala, A. L. Astanovitskiy |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Plasma Pulsed power Condensed Matter Physics Laser 01 natural sciences 010305 fluids & plasmas Magnetic field law.invention symbols.namesake Optics Electromagnetic coil law 0103 physical sciences Faraday effect symbols Eddy current Plasma diagnostics 010306 general physics business |
| Zdroj: | Physics of Plasmas. 24:112707 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | Pulsed power generators are capable of producing strong magnetic fields. Foil laser targets for high intensity interactions with matter were characterized in a strong magnetic field produced by different types of loads. Longitudinal magnetic fields generated by coil loads were measured by Faraday rotation of the polarization plane of laser beams in a small glass sample at two wavelengths. Magnetic fields of 0.8–1.5 MG were measured in different coil loads at 1 MA current. For the first time, the impact of eddy current generated by the fast rising magnetic field with dB/dt = 109 T/s was observed in Al laser targets using shadowgraphy and interferometry. Material of the Al 10 μm foil target expanded from both sides at 0.1–0.2 mm. This effect was not observed in dielectric targets. The impact of eddy current on targets is important for designing experiments for laser plasma interactions in strong magnetic fields. |
| Databáze: | OpenAIRE |
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