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

Y. Azamoum (1) , R. Clady (1) , A. Ferré (2) , M. Gambari (1) , O. Uteza (1) , M. Sentis (1)

1 LP3 - Laboratoire Lasers, Plasmas et Procédés photoniques
2 CELIA - Centre d'Etudes Lasers Intenses et Applications

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.

Mots clés: OCIS codes: (3407480) X-rays; soft x-rays; extreme ultraviolet (EUV); (1407090) Ultrafast lasers; (3505400) Plasmas

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Optique [physics.optics]; Physique des plasmas [physics.plasm-ph]

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, 2018, 43 (15), pp.3574. ⟨10.1364/OL.43.003574⟩. ⟨hal-02137923⟩