Time-resolved photoelectron spectroscopy of polyatomic molecules using 42-nm vacuum ultraviolet laser based on high harmonics generation
| Autor: | Christopher W. West, Junichi Nishitani, Toshinori Suzuki, Chika Higashimura |
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| Rok vydání: | 2017 |
| Předmět: |
010304 chemical physics
Chemistry Dephasing Polyatomic ion General Physics and Astronomy Pulse duration 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Electron spectroscopy law.invention X-ray photoelectron spectroscopy law 0103 physical sciences Physical and Theoretical Chemistry Atomic physics 0210 nano-technology Spectroscopy Ultrashort pulse |
| Zdroj: | Chemical Physics Letters. 684:397-401 |
| ISSN: | 0009-2614 |
| Popis: | Time-resolved photoelectron spectroscopy (TRPES) of gaseous polyatomic molecules using 266-nm (4.7 eV) pump and 42-nm (29.5 eV) probe pulses is presented. A 1-kHz Ti:sapphire laser with a 35 fs pulse duration is employed to generate high harmonics in Kr gas, and the 19th harmonic (42-nm) was selected using two SiC/Mg mirrors. Clear observation of the ultrafast electronic dephasing in pyrazine and photoisomerization of 1,3-cyclohexadiene demonstrates the feasibility of TRPES with the UV pump and VUV probe pulses under weak excitation conditions in the perturbation regime. |
| Databáze: | OpenAIRE |
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