Intramolecular vibrational dynamics of ν1 mode in (CF3)2C=C=O molecule induced by resonant IR femtosecond radiation
| Autor: | A.V. Sharkov, Sergey V. Chekalin, V. O. Kompanets, V.B. Laptev, G.V. Mishakov, N.A. Smirnova, D.V. Serebryakov, S. V. Pigulsky, Evgenii A Ryabov, I.A. Denisov, Alexander Makarov |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
education.field_of_study
Chemistry Physics QC1-999 Population 02 engineering and technology Radiation 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Wavelength Intramolecular force Femtosecond Chirp Molecule Redistribution (chemistry) Atomic physics 0210 nano-technology education |
| Zdroj: | EPJ Web of Conferences, Vol 132, p 03025 (2017) |
| Popis: | Intramolecular dynamics of the vibrational levels (up to v = 5) of the ν 1 mode in (CF 3 ) 2 CCO molecule, induced via multiphoton selective excitation of this mode by resonant femtosecond IR radiation, was studied. The times of intramolecular vibrational energy redistribution ( IVR ) of each vibrational level v to the remaining modes of the molecule were measured. In accordance with the theory predictions the decrease of IVR time with increasing v is observed. A sharp reduction of the IVR time (up to 1 ps) at a wavelength of 2130 cm −1 of transition v=3 → v=4 was found. It was shown that with a negative chirp of a femtosecond radiation pulse the population of high-lying vibrational levels of ν 1 modes significantly increases. |
| Databáze: | OpenAIRE |
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