X-ray diffuse scattering measurements of nucleation dynamics at femtosecond resolution
Publikation/Tidskrift/Serie: Physical Review Letters
Förlag: American Physical Society
Femtosecond time-resolved small and wide angle x-ray diffuse scattering techniques are applied to investigate the ultrafast nucleation processes that occur during the ablation process in semiconducting materials. Following intense optical excitation, a transient liquid state of high compressibility characterized by large-amplitude density fluctuations is observed and the buildup of these fluctuations is measured in real time. Small-angle scattering measurements reveal snapshots of the spontaneous nucleation of nanoscale voids within a metastable liquid and support theoretical predictions of the ablation process.
- Physics and Astronomy
- ISSN: 0031-9007