Abstract

Radiative lifetimes of 12 odd-parity and 73 even-parity levels of Eu I, 26 even-parity levels of Eu II, and three even-parity levels of Eu III have been measured with time-resolved laser-induced fluorescence. These lifetimes are accurate to ±5%. In addition, Eu I branching fractions have been measured with Fourier-transform spectrometry. These are combined with the radiative lifetimes to yield absolute transition probabilities for 140 transitions of Eu I.

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