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  Time zero determination for FEL pump-probe studies based on ultrafast melting of bismuth

Epp, S., Hada, M., Zhong, Y. P., Kumagai, Y., Motomura, K., Mizote, S., et al. (2017). Time zero determination for FEL pump-probe studies based on ultrafast melting of bismuth. Structural Dynamics, 4(5): 054308. doi:10.1063/1.4999701.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-96C1-C Version Permalink: http://hdl.handle.net/21.11116/0000-0004-93ED-B
Genre: Journal Article

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https://dx.doi.org/10.1063/1.4999701 (Publisher version)
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 Creators:
Epp, S.1, Author              
Hada, M.2, Author
Zhong, Yin Peng1, Author              
Kumagai, Y.3, Author
Motomura, K.3, Author
Mizote, S.2, Author
Ono, T. 3, Author
Owada, S.4, Author
Axford, D. 5, Author
Bakhtiarzadeh, Sadegh1, Author              
Fukuzawa, H. 3, Author
Hayashi, Y.2, Author
Katayama, T.4, 6, Author
Marx, Alexander1, Author              
Müller-Werkmeister, Henrike1, Author              
Owen, R. L.5, Author
Sherrell, D. A.5, Author
Tono, K.4, 6, Author
Ueda, K. 3, Author
Westermeier, Fabian1, Author              
Miller, R. J. Dwayne1, 7, 8, Author               more..
Affiliations:
1Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
2Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan, ou_persistent22              
3Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan, ou_persistent22              
4RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, ou_persistent22              
5Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom, ou_persistent22              
6Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan, ou_persistent22              
7The Hamburg Centre for Ultrafast Imaging, ou_persistent22              
8Departments of Physics and Chemistry, University of Toronto, Toronto, Ontario M5S 1A7, Canada, ou_persistent22              

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Free keywords: Free; Quantum optics; Crystallography; Pump probe experiments; Dielectric materials
 Abstract: A common challenge for pump-probe studies of structural dynamics at X-ray free-electron lasers (XFELs) is the determination of time zero (T0)—the time an optical pulse (e.g., an optical laser) arrives coincidently with the probe pulse (e.g., a XFEL pulse) at the sample position. In some cases, T0 might be extracted from the structural dynamics of the sample's observed response itself, but generally, an independent robust method is required or would be superior to the inferred determination of T0. In this paper, we present how the structural dynamics in ultrafast melting of bismuth can be exploited for a quickly performed, reliable and accurate determination of T0 with a precision below 20 fs and an overall experimental accuracy of 50 fs to 150 fs (estimated). Our approach is potentially useful and applicable for fixed-target XFEL experiments, such as serial femtosecond crystallography, utilizing an optical pump pulse in the ultraviolet to near infrared spectral range and a pixelated 2D photon detector for recording crystallographic diffraction patterns in transmission geometry. In comparison to many other suitable approaches, our method is fairly independent of the pumping wavelength (UV–IR) as well as of the X-ray energy and offers a favorable signal contrast. The technique is exploitable not only for the determination of temporal characteristics of the experiment at the interaction point but also for investigating important conditions affecting experimental control such as spatial overlap and beam spot sizes.

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Language(s): eng - English
 Dates: 2017-10-012017-10-01
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4999701
 Degree: -

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Title: Structural Dynamics
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: 13 Volume / Issue: 4 (5) Sequence Number: 054308 Start / End Page: - Identifier: Other: 2329-7778
CoNE: /journals/resource/2329-7778