Fig. 3.

Evolution of the collective phase and its restructuring to the ground state. (A) Depletion of the ground state of ice structure and growth of the new phase, together with the sum of their proportions. Three sequential stages are noted for the dynamics, from left to right in different colors: ultrafast melting, nonequilibrium phase transformation, and structural annealing (see Text). (B) Restructuring of the expanded lattice, at longer times. (Inset) Temporal evolution of the intensity and width of (004) Bragg spot of graphite.