Unexpectedly large O37ClO/O35ClO intensity ratios of the fluorescence

Title
Unexpectedly large O37ClO/O35ClO intensity ratios of the fluorescence
Authors
Choi, Y.S.; Kim, S.K.
Keywords
CHLORINE DIOXIDE, PHOTODISSOCIATION DYNAMICS
Issue Date
1999-07
Publisher
AMER INST PHYSICS
Abstract
The fluorescence intensity ratios of (OClO)-Cl-37/(OClO)-Cl-35 excited to the (A) over tilde (2)A(2) state have been found to be much larger than that expected from the Cl-37/Cl-35 natural abundance ratio for several low-energy vibrational levels. For instance, the (OClO)-Cl-37/(OClO)-Cl-35 ratios are 1.67 and >10 for the (0,0,0) and (1,1,0) bands, respectively, which are 5 and 30 times larger than those expected from the natural abundance ratio. These unusual isotope effects are observed in a narrow energy region within similar to 1000 cm(-1) above the electronic origin. It is likely that the isotopomer-selective, near-resonant spin-orbit coupling of the low-energy vibrational levels of the (2)A(2) state with those of the (2)A(1) state, which provides a decay channel for the (2)A(2) state via spin-orbit coupling, is responsible for the unusual isotope effect. (C) 1999 American Institute of Physics. [S0021-9606(99)02126-1].
URI
http://dspace.inha.ac.kr/handle/10505/20335
ISSN
0021-9606
Appears in Collections:
College of Natural Science(자연과학대학) > Chemistry (화학) > Journal Papers, Reports(화학 논문, 보고서)
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