Rydberg atom-ion collisions in cold environments
| Autor: | Hirzler, Henrik, Pérez-Ríos, Jesús |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 103, 043323 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.103.043323 |
| Popis: | Low-energy collisions of Rydberg atom-ion systems are investigated theoretically. We present the parameter space associated with suitable approaches for the dynamics of Rydberg atom-ion collisions, i.e. quantum-, Langevin and classical exchange regimes, showing that for the lowest reachable temperatures a classical treatment is appropriate. A quasi-classical trajectory method is used to study charge exchange cross sections for Li$^*$-Li$^+$ and Li$^*$-Cs$^+$ at collision energies down to $1\,$K. For cold collisions we find the charge exchange cross section deviating from the $n^4$ geometric scaling. Furthermore, for low-energy collisions, we find both an influence of the ionic core-repulsion as well as variations for two different models used for describing the electron-core potential. Comment: 7 pages, 7 figures |
| Databáze: | arXiv |
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