Lineshape in a laval molecular beam and pressure broadening of N2O Transition lines
| Autor: | Francesco D'Amato, P. K. Chakraborti, G. Baldacchini |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
Radiation Materials science Gaussian Triatomic molecule Flow (psychology) Nozzle Atomic and Molecular Physics and Optics symbols.namesake chemistry symbols Molecular Density Atomic physics Absorption (electromagnetic radiation) Inorganic compound Molecular beam Spectroscopy |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 49:439-447 |
| ISSN: | 0022-4073 |
| DOI: | 10.1016/0022-4073(93)90109-u |
| Popis: | We have measured the absorption profile of N2O transitions belonging to the v2 vibrational band at 589 cm-1 in order to characterize the gas flow in a pulsed Laval molecular beam. It is found that the shape of the transition is almost Lorentzian near the nozzle exit while it clearly approaches a Gaussian profile far away from the nozzle throat. After measuring the spectral profiles for the same transition in a cell at different pressures, we were able to quantify the molecular density along the Laval stream. We have also measured the pressure-broadening parameters of few transitions of the v2 band. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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