期刊
JOURNAL OF MODERN OPTICS
卷 63, 期 4, 页码 383-389出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340.2015.1046521
关键词
free electron laser; multiphoton excitation; charge rearrangement
类别
资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB925/A3]
The fragmentation pattern of the iodine-containing molecules CH2I2 and CH3I following a strong multiphoton excitation in the vicinity of the iodine 4d giant resonance regime is studied using soft X-ray free electron laser radiation. A strong difference of the charge distribution and the kinetic energy release (KER) for the two molecules is found. The effects can be attributed to charge rearrangement processes induced by the photoexcitation. The difference in the observed distribution for higher charge states of iodine and carbon fragments is consistent with an over-the-barrier model for the charge rearrangement in the dissociating molecules. The KER for singly ionised carbon fragments indicates an ultrafast charge rearrangement before the dissociation starts.
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