INVESTIGADORES
TUCCERI Maria Eugenia
artículos
Título:
Absorption cross section and photolysis of OIO.
Autor/es:
MARIA EUGENIA TUCCERI; HÖLSCHER, D.; RODRIGUEZ, A.; DILLON, T. J.; CROWLEY, J. N.
Revista:
Physical Chemistry Chemical Physics
Referencias:
Año: 2006 vol. 8 p. 834 - 846
ISSN:
1463-9076
Resumen:
Pulsed laser photolysis combined with transient absorption spectroscopy and resonance
fluorescence was used to examine the photolysis of OIO at a number of wavelengths
corresponding to absorption bands in its visible spectrum between »530 and 570 nm. Photolysis
at 532 nm was found to result in substantial depopulation of the absorbing ground state, enabling
an estimate for the absorption cross section of OIO at 610.2 nm of (6 ± 2) x 10-18 cm2
molecule-1 to be obtained. No evidence was found for I atom formation following photolysis of
OIO at 532, 562.3, 567.9 and 573.8 nm, enabling an upper limit to the I atom quantum yield of
<0.05 (560580 nm) and <0.24 (532 nm) to be established.