| Autor: |
Costen, M. L., Katayanagi, H., Hall, G. E. |
| Zdroj: |
The Journal of Physical Chemistry - Part A; November 2000, Vol. 104 Issue: 45 p10247-10258, 12p |
| Abstrakt: |
Doppler-broadened absorption spectra of selected rotational levels of singlet CH2 fragments from the 308-nm photolysis of ketene have been observed by frequency-modulated transient absorption spectroscopy in a slit jet expansion. Nascent Doppler profiles of CH2 transitions have been analyzed to yield the internal energy distributions of coincident CO fragments at a total energy 2333 cm-1 above the singlet dissociation threshold. The vibrational branching ratio of CO (υ = 1):(υ = 0) is determined in coincidence with selected rotational levels of CH2. The coincident rotational distributions of CO (υ = 0) are also estimated and found to differ from simple statistical predictions, revealing a relative deficiency of those pairs in which both fragments have a low internal energy. |
| Databáze: |
Supplemental Index |
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