Hetero-site-specific X-ray pump-probe spectroscopy for femtosecond intramolecular dynamics

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 spectros...

Descripción completa

Detalles Bibliográficos
Autores principales: Picón, A., Lehmann, C. S., Bostedt, C., Rudenko, A., Marinelli, A., Osipov, T., Rolles, D., Berrah, N., Bomme, C., Bucher, M., Doumy, G., Erk, B., Ferguson, K. R., Gorkhover, T., Ho, P. J., Kanter, E. P., Krässig, B., Krzywinski, J., Lutman, A. A., March, A. M., Moonshiram, D., Ray, D., Young, L., Pratt, S. T., Southworth, S. H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4879250/
https://www.ncbi.nlm.nih.gov/pubmed/27212390
http://dx.doi.org/10.1038/ncomms11652
Descripción
Sumario: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 XeF(2) molecules following X-ray absorption at the Xe site.

Ejemplares similares