التفاصيل البيبلوغرافية
| العنوان: |
Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr ii. |
| المؤلفون: |
Ward, Jacob W.1,2 (AUTHOR), Li, Jacqueline J.1,3 (AUTHOR), Schwartz, Jared2 (AUTHOR), Nave, Gillian1 (AUTHOR), Raassen, Ton A. J. J.4,5 (AUTHOR), Uylings, Peter H. M.4 (AUTHOR) |
| المصدر: |
Astrophysical Journal. 12/10/2023, Vol. 959 Issue 1, p1-11. 11p. |
| مصطلحات موضوعية: |
*PROBABILITY theory, *CATHODES, *SPECTRAL lines, *FOURIER transforms, *ATOMIC spectroscopy |
| مستخلص: |
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. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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