Laser excitation of a fast beam of Yb+ ions has been used to make meas
urements of the radiative life-times of eight Yb II energy levels, fou
r of which were excited via transitions from the ion-trap metastable l
evel 4f(13)6s22F-degrees7/2. Comparison is made with the lifetimes tha
t may be derived from the semiempirical pseudorelativistic Hartree-Foc
k calculation by Fawcett and Wilson [At. Data Nucl. Data Tables 48, 24
1 (1991)], the agreement being within 50% for seven of the eight level
s considered.