Figure 2
From: Dynamic compression of Ce and Pr with millisecond time-resolved X-ray diffraction
Representative dynamic compression intensity plots of (a) Ce compressed at an average compression rate of 472 GPa/s and (b) Pr at an average compression rate of 1547 GPa/s. In Ce, the γ-α VC transition is clearly observed, which is identified by the discontinuous shift of the fcc reflections to higher 2θ at ~ 12 ms. For Pr the entire structural sequence is observed in this run: the sample transforms from the ambient pressure dhcp Pr-I structure to fcc Pr-II at ~ 20 ms followed by a transition to d-fcc Pr-III at ~ 26 ms and finally into the collapsed α-U Pr-IV phase at ~ 31 ms. Side panels on each plot show the pressure profile for each experiment.
