Ultrafast Extreme Ultraviolet Induced Isomerization of Acetylene Cations
Journal Article
·
· Physical Review Letters
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 < KER < 8 eV, providing clear evidence for the existence of a fast, nonradiative decay channel.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Accelerator& Fusion Research Division
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 1050696
- Report Number(s):
- LBNL-4842E
- Journal Information:
- Physical Review Letters, Vol. 105, Issue 26; Related Information: Journal Publication Date: 2010; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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