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Ultrafast extreme ultraviolet induced isomerization of acetylene cations |
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| Authors: | Jiang Y H Rudenko A Herrwerth O Foucar L Kurka M Kühnel K U Lezius M Kling M F van Tilborg J Belkacem A Ueda K Düsterer S Treusch R Schr?ter C D Moshammer R Ullrich J |
| Affiliation: | Max-Planck-Institut für Kernphysik, Heidelberg, Germany. |
| Abstract: | Ultrafast isomerization of acetylene cations ([HC=CH](+)) in the low-lying excited A(2)Σ(g)(+) 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(+) + CH2(+) 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 |
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