期刊
JOURNAL OF CHEMICAL PHYSICS
卷 131, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3245404
关键词
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资金
- Office of Basic Energy Sciences
- Office of Science, U. S. Department of Energy [DE-AC02-06CH11357, DE-FG02-84ER45076, DE-FG02-06ER46277, DE-FG03-02ER45996]
We investigate the molecular structure information contained in the x-ray diffraction patterns of an ensemble of rigid CF(3)Br molecules aligned by an intense laser pulse at finite rotational temperature. The diffraction patterns are calculated at an x-ray photon energy of 20 keV to probe molecular structure at angstrom-scale resolution. We find that a structural reconstruction algorithm based on iterative phase retrieval fails to extract a reliable structure. However, the high atomic number of Br compared with C or F allows each diffraction pattern to be treated as a hologram. Using this approach, the azimuthal projection of the molecular electron density about the alignment axis may be retrieved. (C) 2009 American Institute of Physics. [doi:10.1063/1.3245404]
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