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High photon flux Kα Mo x-ray source driven by a multi-terawatt femtosecond laser at 100 Hz

Abstract : We develop a pulsed hard x-ray K α source at 17.4 keV produced by the interaction of a multi-terawatt peak power in-frared femtosecond laser pulse with a thick molybdenum (Mo) target at a 100 Hz repetition rate. We measure the highest Mo K α photon production reported to date corresponding to a K α photon flux of 1×10 11 ph∕sr·s† and an estimated peak brightness of ∼2.5×10 17 ph∕s·mm 2 ·mrad 2 0.1%bandwidth†† at ∼5 × 10 18 W∕cm 2 driving laser intensity.
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Y. Azamoum, R. Clady, A. Ferré, M. Gambari, O. Uteza, et al.. High photon flux Kα Mo x-ray source driven by a multi-terawatt femtosecond laser at 100 Hz. Optics Letters, Optical Society of America, 2018, 43 (15), pp.3574. ⟨10.1364/OL.43.003574⟩. ⟨hal-02137923⟩

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