The hyperfine structure in the configuration 4 f 13 5 d 6 s 6 p in ytterbium

Using Doppler-reduced laser induced fluorescence spectroscopy in an atomic beam, the hyperfine structure of 22 levels of the configuration 4f 135d6s6p in neutral ytterbium has been investigated for the two odd isotopes 171 Yb and 171 Yb. The experimental results have been used in a study of the hyperfine structure in regard to a determination of the one-electron parameters for the magnetic dipole and the electric quadrupole hyperfine coupling of the isotope 173 Yb in part II of this work.