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Accurate Transition Rates for the 5p-5s Transitions in Kr I



Krzysztof Dzierzega, U Volz, Gillian Nave, Ulf Griesmann


Branching fractions were measured for electric dipole transitions for the 5p upper levels to the 5s levels in neutral Krypton atoms. The measurements were made with a wall-stabilized electric arc for the spectral lines in the visible, and with a hollow cathode lamp and the NIST 2m - Fourier transform spectrometer for the lines in the near infrared. A semi-empirical calculation, based on accurately known lifetimes for six upper levels, was used to calculate lifetimes for which accurate measurements do not exist. This resulted in a complete set of lifetimes for all 5p levels. Branching fractions and lifetimes were used to calculate transition probabilities for 5p-5s transitions. The uncertainties of the transition probabilities range from less than 1% for the strongest lines about 10% for the very weakest lines. Our data also reveal that most of the previous measurements appear to have been affected by opacity effects in the light sources.
Physical Review A (Atomic, Molecular and Optical Physics)
No. 2


atomic, krypton, spectra, transition probability


Dzierzega, K. , Volz, U. , Nave, G. and Griesmann, U. (2000), Accurate Transition Rates for the 5p-5s Transitions in Kr I, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed November 28, 2023)
Created July 31, 2000, Updated October 12, 2021