Abstract
Laser excitation of a fast beam of ${\mathrm{Yb}}^{+}$ ions has been used to make measurements of the radiative lifetimes of eight Yb ii energy levels, four of which were excited via transitions from the ion-trap metastable level 4${\mathit{f}}^{13}$6${\mathit{s}}^{2}$ $^{2}$${\mathit{F}}_{7/2}^{\mathit{o}}$. Comparison is made with the lifetimes that may be derived from the semiempirical pseudorelativistic Hartree-Fock calculation by Fawcett and Wilson [At. Data Nucl. Data Tables 48, 241 (1991)], the agreement being within 50% for seven of the eight levels considered.
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