Probing dynamics in colloidal crystals with pump-probe experiments at LCLS: Methodology and analysis

We present results of the studies of dynamics in colloidal crystals performed by pump-probe experiments using an X-ray free-electron laser (XFEL). Colloidal crystals were pumped with an infrared laser at a wavelength of 800 nm with varying power and probed by XFEL pulses at an energy of 8 keV with a...

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Bibliographic Details
Published in:Applied sciences 2017-05, Vol.7 (6)
Main Authors: Mukharamova, Nastasia, Lazarev, Sergey, Meijer, Janne -Mieke, Chollet, Matthieu, Singer, Andrej, Kurta, Ruslan, Dzhigaev, Dmitry, Gorobtsov, Oleg Yu, Williams, Garth, Zhu, Diling, Feng, Yiping, Sikorski, Marcin, Song, Sanghoon, Shabalin, Anatoly, Gurieva, Tatiana, Sulyanova, Elena, Yefanov, Oleksandr, Vartanyants, Ivan
Format: Article
Language:English
Subjects:
colloidal crystal
dynamics
free-electron laser
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MATERIALS SCIENCE
pump-probe
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Summary:We present results of the studies of dynamics in colloidal crystals performed by pump-probe experiments using an X-ray free-electron laser (XFEL). Colloidal crystals were pumped with an infrared laser at a wavelength of 800 nm with varying power and probed by XFEL pulses at an energy of 8 keV with a time delay up to 1000 ps. The positions of the Bragg peaks, and their radial and azimuthal widths were analyzed as a function of the time delay. The spectral analysis of the data did not reveal significant enhancement of frequencies expected in this experiment. As a result, this allowed us to conclude that the amplitude of vibrational modes excited in colloidal crystals was less than the systematic error caused by the noise level.
ISSN:2076-3417
2076-3417