14 November 2001 Soft x-ray and EUV emission from cryogenic liquid jets irradiated with fs, ps, and ns laser pulses
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Cryogenic liquid jets of either nitrogen or argon of up to 30 micrometer in diameter were exposed to intense laser fields with pulse durations between 70 fs and 3 ns leading to intensities of 1016 W cm-2 and 1013 W cm-2, respectively. The emission of extreme UV light and soft X-rays investigated by means of an absolutely calibrated soft X-ray spectrograph shows the characteristic lines of highly ionized nitrogen and argon atoms. For nitrogen the emitted photon flux at the longer pulse length was several orders of magnitude higher than for 70 fs pulses whereas for argon pulse durations around one ps lead to the highest conversion efficiency (CE) from laser to soft X-ray radiation.
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Marek Wieland, Marek Wieland, Manfred Faubel, Manfred Faubel, Martin Schmidt, Martin Schmidt, Ulrich Vogt, Ulrich Vogt, Thomas Wilhein, Thomas Wilhein, } "Soft x-ray and EUV emission from cryogenic liquid jets irradiated with fs, ps, and ns laser pulses", Proc. SPIE 4504, Applications of X Rays Generated from Lasers and Other Bright Sources II, (14 November 2001); doi: 10.1117/12.448479; https://doi.org/10.1117/12.448479


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