Ultraviolet continuum spectroscopy of vibrationally excited ozone
| Autor: | E. L. Schweitzer, Jeffrey I. Steinfeld, S. M. Adler-Golden |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Absorption spectroscopy
Infrared Chemistry Photodissociation General Physics and Astronomy Quantum yield medicine.disease_cause Ultraviolet visible spectroscopy Excited state medicine Astrophysics::Earth and Planetary Astrophysics Physical and Theoretical Chemistry Atomic physics Spectroscopy Ultraviolet |
| Zdroj: | The Journal of Chemical Physics. 76:2201-2209 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.443293 |
| Popis: | A model is presented for the Hartley ultraviolet spectrum of vibrationally excited ozone based upon infrared–ultraviolet double resonance spectroscopy and previous temperature‐dependent absorption measurements. The double‐resonance transient arises from a 3500 cm−1 red shift of the absorption spectrum of ozone excited into the stretching vibrational states, with respect to the ground vibrational state. The double‐resonance method is used to study relaxation kinetics of vibrationally excited ozone and to measure infrared energy deposition resulting from CO2 laser pumping. The energy deposition is found to scale linearly with sample pressure and with infrared fluence, except for excitation on‐resonance, which is strongly saturated. The UV spectral model is also used to calculate the wavelength and temperature dependence of the O(1D) photodissociation quantum yield, which is an important component of stratospheric photochemistry. |
| Databáze: | OpenAIRE |
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