SIMBAD references

2000ApJ...542.1109F - Astrophys. J., 542, 1109-1118 (2000/October-3)

Experimental and theoretical radiative lifetimes, branching fractions, and oscillator strengths for Lu I and experimental lifetimes for Lu II and Lu III.

FEDCHAK J.A., DEN HARTOG E.A., LAWLER J.E., PALMERI P., QUINET P. and BIEMONT E.

Abstract (from CDS):

Radiative lifetimes, accurate in most cases to ±5%, from time-resolved, laser-induced fluorescence measurements on a slow beam of lutetium atoms and ions are reported for 22 odd-parity levels and 4 even-parity levels of Lu I and 14 odd-parity levels of Lu II. In addition, we report the radiative lifetime of one odd-parity level and an upper bound on the radiative lifetime of a second odd-parity level of Lu III. Experimental branching fractions for Lu I from emission spectra covering the near ultraviolet to the near infrared and recorded using the US National Solar Observatory 1.0 m Fourier transform spectrometer are reported. The branching fractions are combined with the radiative lifetimes to produce 44 experimentally determined transition probabilities or oscillator strengths, accurate generally to ±10%, for Lu I. New theoretical values for Lu I radiative lifetimes and branching fractions from a relativistic Hartree-Fock calculation that includes core polarization effects are also reported. These experimental and theoretical results, as well as older published results, are compared.

Abstract Copyright:

Journal keyword(s): Atomic Data - Methods: Laboratory - Nuclear Reactions, Nucleosynthesis, Abundances

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2021.03.03-03:51:10

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