Year: 2016
Type: article
Abstract: New capabilities at X-ray free-electron laser facilities allow the generation of two-colour femtosecond X-ray pulses, opening the possibility of performing ultrafast studies of X-ray-induced phenomena. Particularly, the experimental realization of hetero-site-specific X-ray-pump/X-ray-probe spectroscopy is of special interest, in which an X-ray pump pulse is absorbed at one site within a molecule and an X-ray probe pulse follows the X-ray-induced dynamics at another site within the same molecule. Here we show experimental evidence of a hetero-site pump-probe signal. By using two-colour 10-fs X-ray pulses, we are able to observe the femtosecond time dependence for the formation of F ions during the fragmentation of XeF2 molecules following X-ray absorption at the Xe site. Two-color X-ray pulses with controlled time delay allow exciting one site of a molecule and then probing a different site of the same molecule with femtosecond resolution. Here, the authors use this hetero-site pump-probe technique to study charge redistribution and dissociation of the xenon difluoride molecule.
Source: Nature Communications
DOI: 10.1038/ncomms11652
Authors: A. Picón, C. S. Lehmann, C. Bostedt, A. Rudenko, A. Marinelli, T. Osipov, D. Rolles, N. Berrah, C. Bomme, M. Bucher, G. Doumy, B. Erk, K. R. Ferguson, T. Gorkhover, P. J. Ho, E. P. Kanter, B. Krässig, J. Krzywinski, A. A. Lutman, A. M. March, D. Moonshiram, D. Ray, L. Young, S. T. Pratt, S. H. Southworth
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,990
Awards: G102163711, G107546177, G1229526393, G1286251239, G1313983767, G1664757510, G1815137805, PROBING COMPLEXITY USING THE LCLS AND THE ALS, G222768804, G2287611682, G2371548206, G262532246, G262962599, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, G303061748, G3075337988, G333714909, PROBING COMPLEXITY USING THE LCLS AND THE ALS, G3770966485, G3826261775, G3887254177, G4235786860, G426311843, G4269941704, G4908923434, G495301720, G498139845, G5024545275, G5387317844, G5570207115, G5648016710, G618388848, G628751139, G6550344761, G665223801, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, G6848031779, G6918803902, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, G7083997402, G7283024673, G7313278570, G7331630580, G7583137537, G8382000481, G911061179, G969889393, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, G993149817
OpenAlex ID: W2403765023