期刊
MOLECULAR PHYSICS
卷 111, 期 14-15, 页码 2012-2019出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2013.780104
关键词
ozone; photodissociation; alignment
资金
- EPSRC [EP/G00224X/1]
- EPSRC [EP/G00224X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G00224X/1] Funding Source: researchfish
Angular momentum polarisation and translational anisotropy have been measured for the J = 17 and 18 rotational levels in the O-2(a(g)(1), v = 1) fragment formed from the photodissociation of ozone at 265nm. The results show similarities to those previously measured for the most populated vibrational level, v = 0, produced from photolysis in the Hartley band. Translational anisotropy parameters are very similar for both fragments, consistent with prompt dissociation from a bent intermediate. Angular momentum alignment and orientation, however, are found to be consistently lower for J = 17, compared with J = 18, and the magnitude of the depolarisation is consistent with previous results obtained for the odd and even J fragments in v = 0, produced with the same speed at longer photolysis wavelengths. The results indicate a vibrational-state-independent mechanism for the difference in polarisation between even and odd rotational states observed at relatively low fragment speeds.
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