Photoelectron holography of the H2+ molecule
| Autor: | Gellért Zsolt Kiss, Attila Tóth, S. Borbély, Ladislau Nagy |
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| Rok vydání: | 2020 |
| Předmět: |
01.03. Fizikai tudományok
Physics Photoemission spectroscopy Wave packet Holography Interference (wave propagation) 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Spectral line 010305 fluids & plasmas law.invention Superposition principle law Extreme ultraviolet 0103 physical sciences Ionization energy 010306 general physics |
| Zdroj: | The European Physical Journal D. 74 |
| ISSN: | 1434-6079 1434-6060 |
| DOI: | 10.1140/epjd/e2020-100273-9 |
| Popis: | Abstract We investigate the photoelectron spectrum of the H2+ target induced by few-cycle XUV laser pulses using first principle calculations. In the photoelectron spectrum, by performing calculations for different internuclear separations, we investigate how the structure of the target is influencing the spatial interference pattern. This interference pattern is created by the coherent superposition of electronic wave packets emitted at the same time, but following different paths. We find that the location of the interference minima in the spectra is dominantly determined by the target’s ionization energy, however, by comparing the H2+ results with model calculations with spherically symmetric potentials, clear differences were observed for the molecular potential relative to the central potentials. Next to the main feature (spatial interference) we have also identified the traces of the two-center interference in the photoelectron spectrum, however, these were mainly washed out due to the complex electronic wave packet dynamics that occurs during the interaction with the considered laser field. Graphical abstract |
| Databáze: | OpenAIRE |
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