期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.064801
关键词
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资金
- U.S. Department of Energy [DE-AC5207NA27344]
- SLAC National Accelerator Laboratory [DE-AC02-76SF00515]
- Deutsches Elektronen-Synchrotron
- Helmholtz Association
- Helmholtz Society
- Joachim Herz Stiftung
- Swedish Research Council
Intense and ultrashort x-ray pulses from free-electron lasers open up the possibility for near-atomic resolution imaging without the need for crystallization. Such experiments require high photon fluences and pulses shorter than the time to destroy the sample. We describe results with a new femtosecond pump-probe diffraction technique employing coherent 0.1 keV x rays from the FLASH soft x-ray free-electron laser. We show that the lifetime of a nanostructured sample can be extended to several picoseconds by a tamper layer to dampen and quench the sample explosion, making <1 nm resolution imaging feasible.
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