期刊
APPLIED PHYSICS LETTERS
卷 110, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4976541
关键词
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资金
- JSPS KAKENHI [16K17846, 15K13609, 15H05751]
- JSPS
- X-ray Free Electron Laser Priority Strategy Program at Osaka University from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) [12005014]
- French Agence Nationale de la Recherche (ANR) [ANR IRONFEL 12-PDOC-0011]
- Volkswagen Foundation
- Grants-in-Aid for Scientific Research [15H05751, 16K17846, 16H02246, 15K13609, 25707041, 16H01119] Funding Source: KAKEN
We have observed the lattice expansion before the onset of compression in an optical-laser-driven target, using diffraction of femtosecond X-ray beams generated by the SPring-8 Angstrom Compact Free-electron Laser. The change in diffraction angle provides a direct measure of the lattice spacing, allowing the density to be calculated with a precision of +/- 1%. From the known equation of state relations, this allows an estimation of the temperature responsible for the expansion as <1000 K. The subsequent ablation-driven compression was observed with a clear rise in density at later times. This demonstrates the feasibility of studying the dynamics of preheating and shock formation with unprecedented detail. Published by AIP Publishing.
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