Ab initio relativistic treatment of the intercombination $a^3Π-X^1Σ^+$ Cameron system of the CO molecule
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2020
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| _version_ | 1866918069342830592 |
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| author | Mosyagin, Nikolai S. Oleynichenko, Alexander V. Zaitsevskii, Andrei Kudrin, Artur V. Pazyuk, Elena A. Stolyarov, Andrey V. |
| author_facet | Mosyagin, Nikolai S. Oleynichenko, Alexander V. Zaitsevskii, Andrei Kudrin, Artur V. Pazyuk, Elena A. Stolyarov, Andrey V. |
| contents | The intercombination $a^3Π- X^1Σ^+$ Cameron system of carbon monoxide has been computationally studied in the framework of multi-reference Fock space coupled cluster method with the use of generalized relativistic pseudopotential model for the effective introducing the relativity in all-electron correlation treatment. The extremely weak $a^3Π_{Ω=0^+,1} - X^1Σ^+$ transition probabilities and radiative lifetimes of the metastable $a^3Π$ state were calculated and compared with their previous theoretical and experimental counterparts. The impact of a presumable variation of the fine structure constant $α=e^2/\hbar c$ on transition strength of the Cameron system has been numerically evaluated as well. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2010_08849 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Ab initio relativistic treatment of the intercombination $a^3Π-X^1Σ^+$ Cameron system of the CO molecule Mosyagin, Nikolai S. Oleynichenko, Alexander V. Zaitsevskii, Andrei Kudrin, Artur V. Pazyuk, Elena A. Stolyarov, Andrey V. Computational Physics Chemical Physics The intercombination $a^3Π- X^1Σ^+$ Cameron system of carbon monoxide has been computationally studied in the framework of multi-reference Fock space coupled cluster method with the use of generalized relativistic pseudopotential model for the effective introducing the relativity in all-electron correlation treatment. The extremely weak $a^3Π_{Ω=0^+,1} - X^1Σ^+$ transition probabilities and radiative lifetimes of the metastable $a^3Π$ state were calculated and compared with their previous theoretical and experimental counterparts. The impact of a presumable variation of the fine structure constant $α=e^2/\hbar c$ on transition strength of the Cameron system has been numerically evaluated as well. |
| title | Ab initio relativistic treatment of the intercombination $a^3Π-X^1Σ^+$ Cameron system of the CO molecule |
| topic | Computational Physics Chemical Physics |
| url | https://arxiv.org/abs/2010.08849 |