Triatomic Photoassociation in an Ultracold Atom-Molecule Collision
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arXiv
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| Format: | Preprint |
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2022
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| _version_ | 1866908671688048640 |
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| author | Elkamshishy, Ahmed A. Greene, Chris H. |
| author_facet | Elkamshishy, Ahmed A. Greene, Chris H. |
| contents | Ultracold collisions of neutral atoms and molecules have been of great interest since experimental advances enabled the cooling and trapping of such species. This study is a theoretical investigation of a low-energy collision between an alkali atom and a diatomic molecule, accompanied by absorption of a photon from an external electromagnetic field. The long-range interaction between the two species is treated, including the atomic spin-orbit interaction. The long-range potential energy curves for the triatomic complex are calculated in realistic detail, while the short-range behavior is mimicked by applying different boundary conditions at the van der Waals length. The photoassociation (PA) rate of an atom colliding with a dimer is calculated for different alkali atoms, namely Na and Cs. The model developed in this study is also tested against known results for the formation rate of the Cs$_3$ complex via PA, namely to compare with the work done by Rios et al., PRL 115, 073201 (2015), and the results are in generally good agreement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_02092 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Triatomic Photoassociation in an Ultracold Atom-Molecule Collision Elkamshishy, Ahmed A. Greene, Chris H. Atomic Physics Chemical Physics Quantum Physics Ultracold collisions of neutral atoms and molecules have been of great interest since experimental advances enabled the cooling and trapping of such species. This study is a theoretical investigation of a low-energy collision between an alkali atom and a diatomic molecule, accompanied by absorption of a photon from an external electromagnetic field. The long-range interaction between the two species is treated, including the atomic spin-orbit interaction. The long-range potential energy curves for the triatomic complex are calculated in realistic detail, while the short-range behavior is mimicked by applying different boundary conditions at the van der Waals length. The photoassociation (PA) rate of an atom colliding with a dimer is calculated for different alkali atoms, namely Na and Cs. The model developed in this study is also tested against known results for the formation rate of the Cs$_3$ complex via PA, namely to compare with the work done by Rios et al., PRL 115, 073201 (2015), and the results are in generally good agreement. |
| title | Triatomic Photoassociation in an Ultracold Atom-Molecule Collision |
| topic | Atomic Physics Chemical Physics Quantum Physics |
| url | https://arxiv.org/abs/2207.02092 |