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Intense and reproducible K$$_{alpha}$$ emissions from micron-sized Kr cluster target irradiated with intense femtosecond laser pulses

Hayashi, Yukio; Fukuda, Yuji; Faenov, A. Y.*; Kando, Masaki; Kawase, Keigo; Pikuz, T. A.*; Homma, Takayuki; Daido, Hiroyuki; Bulanov, S. V.

Intense and reproducible Kr K$$_{alpha}$$ X-rays have been generated via the interaction between 3 TW laser pulse and a micron-sized Kr cluster target. A single photon counting technique with an X-ray CCD was used for measurements of the X-ray energy spectrum in a single shot. At the laser irradiance of 8 $$times$$ 10$$^{16}$$ W/cm$$^{2}$$, the averages and standard deviations of the total X-ray yield and K$$_{alpha}$$ X-ray yield were equal to $$(6.6 pm 1.1) times 10^7$$ photons/sr and $$(6.8 pm 2.6) times 10^5$$ photons/sr, respectively. These results indicate that the X-ray energy spectrum was reproducible at 8 $$times$$ 10$$^{16}$$ W/cm$$^{2}$$.

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Category:Physics, Applied

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