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Femtosecond X-ray Absorption Spectroscopy at a Hard X-ray Free Electron Laser: Application to Spin Crossover Dynamics

Cited 136 time in webofscience Cited 142 time in scopus
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Title
Femtosecond X-ray Absorption Spectroscopy at a Hard X-ray Free Electron Laser: Application to Spin Crossover Dynamics
Author(s)
Lemke, Henrik T.; Bressler, Christian; Chen, Lin X.; Fritz, David M.; Gaffney, Kelly J.; Galler, Andreas; Gawalda, Wojciech; Haldrup, Kristoffer; Hartsock, Robert W.; Hyot Cherl Ihee; Kim, Jeongho; Kyung Hwan Kim; Lee, Jae Hyuk; Nielsen, Martin M.; Stickrath, Andrew B.; Zhang, Winkai; Zhu, Diling; Cammarata, Marco
Publication Date
2013-01
Journal
JOURNAL OF PHYSICAL CHEMISTRY A, v.117, no.4, pp.735 - 740
Publisher
AMER CHEMICAL SOC
Abstract
X-ray free electron lasers (XFELs) deliver short (<100 fs) and intense (∼1012 photons) pulses of hard X-rays, making them excellent sources for time-resolved studies. Here we show that, despite the inherent instabilities of current (SASE based) XFELs, they can be used for measuring high-quality X-ray absorption data and we report femtosecond time-resolved Xray absorption near-edge spectroscopy (XANES) measurements of a spin-crossover system, iron(II) tris(2,2′-bipyridine) in water. The data indicate that the low-spin to high-spin transition can be modeled by single-exponential kinetics convoluted with the overall time resolution. The resulting time constant is ∼160 fs.
URI
https://pr.ibs.re.kr/handle/8788114/1399
DOI
10.1021/jp312559h
ISSN
1089-5639
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
16_IBS CA1201-1_Journal of PHYSICAL CHEMISTRY A_177_01_735_Femtosecond X-ray Absorption Spectroscopy at a Hard X-ray Free Electron Laser.pdfDownload

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