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Ultrafast Electron Diffraction with Spatiotemporal Resolution of Atomic Motion |
| LIANG Wen-Xi1, ZHU Peng-Fei1, WANG Xuan2, NIE Shou-Hua2, ZHANG Zhong-Chao3, Clinite Rick2, CAO Jian-Ming2, SHENG Zheng-Ming1,3, ZHANG Jie1,3 |
| 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 1001902Physics Department and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA3Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 |
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LIANG Wen-Xi, ZHU Peng-Fei, WANG Xuan et al 2009 Chin. Phys. Lett. 26 020701 |
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Abstract Ultrafast electron diffraction (UED) is a rapidly advancing technique capable of recording the atomic-detail structural dynamics in real time. We report the establishment of the first UED system in China. Employing this UED apparatus, both the coherent and the concurrent thermal lattice motions in an aluminium thin-film, trigged by ultrafast laser heating, have been observed. These results demonstrate its ability to directly measure a sub-milli-angstrom lattice spacing change on a sub-picosecond time scale.
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07.78.+s
63.22.Dc
65.40.De
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Received: 18 November 2008
Published: 20 January 2009
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| PACS: |
07.78.+s
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(Electron, positron, and ion microscopes; electron diffractometers)
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63.22.Dc
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(Free films)
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65.40.De
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(Thermal expansion; thermomechanical effects)
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