Shock-induced lattice deformation of CdS single crystal by nanosecond time-resolved Laue diffraction

Abstract

We report a single-shot nanosecond time-resolved Laue diffraction measurement of cadmium sulfide (CdS) single crystal under laser-induced shock compression. The observed Laue diffraction pattern maintains sixfolding axis of the wurtzite structure for 10ns at a shock pressure of 3.92GPa, which is above the threshold pressure of phase transition to a rocksalt structure. This result shows that a transient wurtzite structure is observed above its threshold pressure to a rocksalt structure on a nanosecond time scale. Uniaxial compression was confirmed by the c∕a value of the transient structure obtained from the (201) and (302) peaks.