Abstract
With the aid of nanosecond time-resolved X-ray diffraction techniques, we have explored the complex structural dynamics of bismuth under laser-driven compression. The results demonstrate that shocked bismuth undergoes a series of structural transformations involving four solid structures: the Bi-I, Bi-II, Bi-III, and Bi-V phases. The transformation from the Bi-I phase to the Bi-V phase occurs within 4 ns under shock compression at ∼11 GPa, showing no transient phases with the available experimental conditions. Successive phase transitions (Bi-V → Bi-III → Bi-II → Bi-I) during the shock release within 30 ns have also been resolved, which were inaccessible using other dynamic techniques.
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