Fig. 5.

Real-time evolution of the crystalline phase by using single-pulse imaging. Asymptotic (Left) and transient-frame (Right) diffraction profiles are obtained by eliminating the small contribution (box) of amorphous diffraction taken before heating (t = −∞). Note the similarity of the diffraction at the asymptote for all frames studied, while the diffraction for the phase change (Right) grows in amplitude with time. When deconvoluted from the instrumental response, the evolution of the width with time will provide the temporal changes in the size of crystallites.