Determining a vibrational distribution with a broadband optical source
| Autor: | H. Lignier, T. Courageux, Daniel Comparat, Anne Cournol, B. Viaris de Lesegno |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Work (thermodynamics)
Atomic Physics (physics.atom-ph) Monofluoride Population FOS: Physical sciences General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 01 natural sciences Signal Physics - Atomic Physics chemistry.chemical_compound Physics - Chemical Physics 0103 physical sciences Broadband Physics::Atomic and Molecular Clusters Physical and Theoretical Chemistry Physics::Chemical Physics 010306 general physics education Chemical Physics (physics.chem-ph) Physics education.field_of_study Argon 021001 nanoscience & nanotechnology chemistry Atomic physics 0210 nano-technology Excitation Beam (structure) |
| Popis: | This work presents an experimental protocol conceived to determine the vibrational distribution of barium monofluoride molecules seeded in a supersonic beam of argon. Here, as in many cases, the detection signal is related to the number of molecules by an efficiency involving several parameters that may be difficult to determine properly. In particular, this efficiency depends on the vibrational level of the detected molecules. Our approach avoids these complications by comparing different detection signals generated by different vibrational excitations. Such an excitation is made possible by the use of a broadband optical source that depletes a specific vibrational level whose population is redistributed in the other levels. 6 pages, 4 figures |
| Databáze: | OpenAIRE |
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