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American Physical Society, Physical Review Letters, 26(105), 2010

DOI: 10.1103/physrevlett.105.263002

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Ultrafast Extreme Ultraviolet Induced Isomerization of Acetylene Cations

Journal article published in 2010 by Y. H. Jiang, Artem Rudenko ORCID, O. Herrwerth, M. Kurka, L. Foucar, K. U. Kühnel, K. Kuhnel, M. Lezius, Matthias F. Kling, Jeroen van Tilborg, Ali Belkacem, K. Ueda, S. Düsterer, R. Treusch ORCID, Claus-Dieter Schröter and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Ultrafast isomerization of acetylene cations ([HC = CH]{sup +}) in the low-lying excited A{sup 2}{Sigma}{sub g}{sup +} state, populated by the absorption of extreme ultraviolet (XUV) photons (38 eV), has been observed at the Free Electron Laser in Hamburg, (FLASH). Recording coincident fragments C{sup +} + CH{sub 2}{sup +} as a function of time between XUV-pump and -probe pulses, generated by a split-mirror device, we find an isomerization time of 52 {+-} 15 fs in a kinetic energy release (KER) window of 5.8