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Phase-contrast X-ray imaging with intense Ar $$K$$$$alpha$$ radiation from femtosecond-laser-driven gas target

Chen, L. M.; Kando, Masaki; Ma, J.-L.; Kotaki, Hideyuki; Fukuda, Yuji; Hayashi, Yukio; Daito, Izuru; Homma, Takayuki; Ogura, Koichi; Mori, Michiaki; Pirozhkov, A. S.; Koga, J. K.; Daido, Hiroyuki; Bulanov, S. V.; Kimura, Toyoaki; Tajima, Toshiki; Kato, Yoshiaki

A novel hard X-ray source has been developed that is intense, quasi-monochromatic, and compact enough to allow the modest laboratory use in a ubiquitous fashion. The measurement by hard X-ray spectroscopy from the Ar gas target irradiated by 60 fs, 200 mJ Ti:Sapphire laser pulse at 10$$^{17}$$ W/cm$$^{2}$$ yields brilliant high phase-contrast imaging of a small animal. The X-ray spectrum has a characteristic of Ka emission having unusually compressed continuum and vanished energetic X-ray tail with the emission intensity of Ar $$K$$$$alpha$$ line of 10$$^{10}$$ photons (4p sr pulse)-1.

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Category:Physics, Applied

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