Infrared vibration-rotation spectra of the CIO radical using tunable diode laser spectroscopy
| Autor: | W. R. Wade, J. M. Hoell, G. E. Copeland, Robert S. Rogowski, C. H. Bair |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Tunable diode laser absorption spectroscopy Infrared business.industry Materials Science (miscellaneous) Analytical chemistry Infrared spectroscopy Laser Industrial and Manufacturing Engineering law.invention Semiconductor laser theory Nuclear magnetic resonance Optics law Physics::Chemical Physics Business and International Management Spectroscopy business Microwave Tunable laser |
| Zdroj: | Applied optics. 17(9) |
| ISSN: | 1559-128X |
| Popis: | Tunable diode laser spectroscopy is used to measure the infrared vibration-rotation spectra of the ClO radical. The radical is generated in a flow system where a Cl2-He mixture passes through a microwave discharge to dissociate the Cl2. An O3-O2 mixture from an ozone generator is injected into the system downstream of the microwave discharge where O3 combines with Cl to form ClO. By adjusting the gas flow rates to yield an excess of Cl atoms, all the ozone is combined. ClO concentration is measured with UV absorption at 2577 and 2772 A and a deuterium lamp as a continuous source. Total cell pressure is 5.5 torr. The diode laser spectrometer is calibrated with ammonia lines as a reference where possible. The frequency of vibration-rotation lines is expressed as a function of rotational quantum number, fundamental vibrational frequency, and the rotational constants of the upper and lower vibrational states. |
| Databáze: | OpenAIRE |
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