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27 Dec 1999

Volume 75, Issue 26, pp. 4049-4210

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Greatly enhanced soft x-ray generation from femtosecond-laser-produced plasma by using a nanohole-alumina target

Tadashi Nishikawa, Hidetoshi Nakano, Naoshi Uesugi, Masashi Nakao, and Hideki Masuda

Appl. Phys. Lett. 75, 4079 (1999); http://dx.doi.org/10.1063/1.125542 (3 pages) | Cited 16 times

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By making an array of nanoholes on an alumina target, x-ray emission from laser-produced plasma can be greatly enhanced even in soft x-ray energy regions (<0.25 keV). X-ray fluence enhancement around 30 times was achieved in the 5–25 nm wavelength range. The enhancement increases as the ionization level of Al becomes higher and the x-ray wavelength becomes shorter. Over 50-fold enhancement was obtained at a soft x-ray wavelength around 6 nm, which corresponds to the emission from Al8+,9+ ions. X-ray pulse duration was 17 ps, which is much shorter than that obtained by using the prepulse technique. © 1999 American Institute of Physics.
Show PACS
52.25.Os Emission, absorption, and scattering of electromagnetic radiation
07.85.Fv X- and γ-ray sources, mirrors, gratings, and detectors
52.50.Jm Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)
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