Work

Pump-probe Dark-field X-ray Microscopy

Year: 2022

Type: preprint

Abstract: A pump-probe dark-field X-ray microscopy (DFXM) experiment was carried out at the Advanced Photon Source (APS) with nanosecond drive laser pulses and hybrid mode X-ray probe pulses. We observe a thermal decay due to laser-induced heat diffusion in a Germanium single crystal which matches the theoretical prediction. The single pulse DFXM imaging in combination with the laser-pump X-ray probe method could reveal thermal strain formation and propagation of the acoustic wave "on-the-fly" generated by a laser-induced lattice deformation. This will open a new avenue of materials research on laser-induced dynamic phenomena in solids at sub-nanosecond time scales.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2210.06243

Authors: Poudyal, Ishwor, Qiao, Zhi, Last, Arndt, Armstrong, Michael R., Islam, Zahir

Institutions: Argonne National Laboratory, Karlsruhe Institute of Technology, Lawrence Livermore National Laboratory

Language: English

Topic: Advanced X-ray Imaging Techniques

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Office of Science, Basic Energy Sciences, Laboratory Directed Research and Development, Argonne National Laboratory

Awards: G102163711, G107546177, G1286251239, G1313983767, G1664757510, G2287611682, G262962599, G3075337988, G426311843, G498139845, G5387317844, G6848031779, G6918803902, G7583137537, G788322952, G969889393, G993149817

OpenAlex ID: W4306178157

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