On the possibility of ultrafast KOSSEL diffraction

Olivier Peyrusse (1)

1 LP3 - Laboratoire Lasers, Plasmas et Procédés photoniques

We discuss the possibility of realizing time-resolved Kossel diffraction experiments for providing indications on the crystalline order or on the periodic structure of a material. We make use of the interaction of a short, ultra-intense laser pulses with a solid target which generates short bursts of hot electrons. Penetrating inside a layered sample (i.e. a crystal or an artificial multi-layer material), these electrons ionize inner-shell electrons so that the subsequent radiative filling of K-shell vacancies results in a strong Kα emission which is enhanced in the Bragg directions corresponding to the period of the material. We present simulations of the angle-resolved Kα emission which displays the so-called Kossel patterns around the Bragg angles. Then, we discuss possible experiments appropriate for laser facilities delivering short and intense pulses.

Mots clés: x-ray emission; Kossel diffraction; ultra-intense lasers

Domaines: Physique [physics]

Olivier Peyrusse. On the possibility of ultrafast KOSSEL diffraction. Matter and Radiation at Extremes, 2022. ⟨hal-03697979⟩