The C$^1Π_{\mathrm{u}}$ state of potassium dimer revisited: an~extensive study by polarisation labelling spectroscopy method
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866929670001262592 |
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| author | Jastrzebski, W. Szczepkowski, J Kowalczyk, P. |
| author_facet | Jastrzebski, W. Szczepkowski, J Kowalczyk, P. |
| contents | The polarisation labelling spectroscopy technique was applied to study the C$^1Π_{\mathrm{u}}$ $\leftarrow$ X$^1Σ^{+}_{\mathrm{g}}$ band system in potassium dimer. About 1100 new rotationally resolved molecular lines were measured in the $22100-24100$~cm$^{-1}$ spectral range. Perturbations of the lowest vibrational levels of the C state were localised and their origin discussed. A set of Dunham coefficients was deduced to fit the unperturbed levels of the C$^1Π_{\mathrm{u}}$ state with $0 \le v \le 38$ and $18 \le J \le 101$ and the potential energy curve of the state was constructed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_05888 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The C$^1Π_{\mathrm{u}}$ state of potassium dimer revisited: an~extensive study by polarisation labelling spectroscopy method Jastrzebski, W. Szczepkowski, J Kowalczyk, P. Atomic Physics Chemical Physics The polarisation labelling spectroscopy technique was applied to study the C$^1Π_{\mathrm{u}}$ $\leftarrow$ X$^1Σ^{+}_{\mathrm{g}}$ band system in potassium dimer. About 1100 new rotationally resolved molecular lines were measured in the $22100-24100$~cm$^{-1}$ spectral range. Perturbations of the lowest vibrational levels of the C state were localised and their origin discussed. A set of Dunham coefficients was deduced to fit the unperturbed levels of the C$^1Π_{\mathrm{u}}$ state with $0 \le v \le 38$ and $18 \le J \le 101$ and the potential energy curve of the state was constructed. |
| title | The C$^1Π_{\mathrm{u}}$ state of potassium dimer revisited: an~extensive study by polarisation labelling spectroscopy method |
| topic | Atomic Physics Chemical Physics |
| url | https://arxiv.org/abs/2501.05888 |