Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii
We present transition probabilities for 268 spectral lines of singly ionized chromium (Cr ii ) in the wavelength region 208–414 nm. Branching fractions were measured in archival Fourier transform spectra of chromium-argon and chromium-neon hollow cathode lamps and a Penning discharge source. The bra...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acfafe |
| _version_ | 1797448311736631296 |
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| author | Jacob W. Ward Jacqueline J. Li Jared Schwartz Gillian Nave Ton A. J. J. Raassen Peter H. M. Uylings |
| author_facet | Jacob W. Ward Jacqueline J. Li Jared Schwartz Gillian Nave Ton A. J. J. Raassen Peter H. M. Uylings |
| author_sort | Jacob W. Ward |
| collection | DOAJ |
| description | We present transition probabilities for 268 spectral lines of singly ionized chromium (Cr ii ) in the wavelength region 208–414 nm. Branching fractions were measured in archival Fourier transform spectra of chromium-argon and chromium-neon hollow cathode lamps and a Penning discharge source. The branching fractions were combined with previously published experimental lifetimes of 14 levels, and with lifetimes from semiempirical calculations for 14 levels to give transition probabilities. The estimated uncertainties of the transition probabilities range from 10% to 26%. A comparison with previously published experimental transition probabilities shows discrepancies of up to a factor of 2.5 for lines around 213 nm. |
| first_indexed | 2024-03-09T14:08:31Z |
| format | Article |
| id | doaj.art-2306b682ad114a438a05fe9624eb5577 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-09T14:08:31Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-2306b682ad114a438a05fe9624eb55772023-11-29T18:46:54ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-019591810.3847/1538-4357/acfafeBranching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr iiJacob W. Ward0https://orcid.org/0000-0002-5841-0649Jacqueline J. Li1https://orcid.org/0000-0002-7849-5483Jared Schwartz2Gillian Nave3https://orcid.org/0000-0002-1718-9650Ton A. J. J. Raassen4Peter H. M. Uylings5https://orcid.org/0000-0001-6876-2472National Institute of Standards and Technology , Gaithersburg, MD 20899-8422, USA; University of Maryland College Park , College Park, MD 20742, USANational Institute of Standards and Technology , Gaithersburg, MD 20899-8422, USA; University of Pennsylvania , Philadelphia, PA 19104, USAUniversity of Maryland College Park , College Park, MD 20742, USANational Institute of Standards and Technology , Gaithersburg, MD 20899-8422, USAAnton Pannekoek Institute for Astronomy, University of Amsterdam , The Netherlands; SRON Netherlands Institute for Space Research , Utrecht, The NetherlandsAnton Pannekoek Institute for Astronomy, University of Amsterdam , The NetherlandsWe present transition probabilities for 268 spectral lines of singly ionized chromium (Cr ii ) in the wavelength region 208–414 nm. Branching fractions were measured in archival Fourier transform spectra of chromium-argon and chromium-neon hollow cathode lamps and a Penning discharge source. The branching fractions were combined with previously published experimental lifetimes of 14 levels, and with lifetimes from semiempirical calculations for 14 levels to give transition probabilities. The estimated uncertainties of the transition probabilities range from 10% to 26%. A comparison with previously published experimental transition probabilities shows discrepancies of up to a factor of 2.5 for lines around 213 nm.https://doi.org/10.3847/1538-4357/acfafeAtomic spectroscopyTransition probabilitiesAtomic data |
| spellingShingle | Jacob W. Ward Jacqueline J. Li Jared Schwartz Gillian Nave Ton A. J. J. Raassen Peter H. M. Uylings Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii The Astrophysical Journal Atomic spectroscopy Transition probabilities Atomic data |
| title | Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii |
| title_full | Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii |
| title_fullStr | Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii |
| title_full_unstemmed | Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii |
| title_short | Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii |
| title_sort | branching fractions and transition probabilities for uv transitions in the spectrum of cr ii |
| topic | Atomic spectroscopy Transition probabilities Atomic data |
| url | https://doi.org/10.3847/1538-4357/acfafe |
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