Based on the experimental hyperfine structure data given in part I of this work and on the fine structure analysis of Wyart and Camus a parametric analysis of the hyperfine structure of the configuration 4f135d6s6p of neutral Yb has been performed leading to the following one-electron parameters for the magnetic dipole hyperfine structure of the isotope 173Yb a 4 01 = −375(11) MHz, a 5 01 = −68(17) MHz, a 6 10 = −3 090(80) MHz, and a 6 01 = −170(30)MHz and for the electric quadrupole hyperfine structure b 4 02 = 7 490(150) MHz, b 5 02 = 3 500(200) MHz, and b 6 02 = 4 700(200) MHz. Theoretical predictions are made for all unknown A and B constants of the configuration investigated.
Based on the experimental hyperfine structure data given in part I of this work and on the fine structure analysis of Wyart and Camus a parametric analysis of the hyperfine structure of the configuration 4f(13)5d6s6p of neutral Yb has been performed leading to the following one-electron parameters for the magnetic dipole hyperfine structure of the isotope Yb-173 a(4f)(01) = -375(11) MHz, a(5d)(01) = -68(17) MHz, a(6s)(10) = -3090(80) MHz, and a(6p)(01) = -170(30) MHz and for the electric quadrupole hyperfine structure b(4f)(02) = 7490(150) MHz, b(5d)(02) = 3500(200) MHz, and b(6p)(02) = 4700(200) MHz. Theoretical predictions are made for all known A and B constants of the configuration investigated.
Using Doppler-reduced laser induced fluorescence spectroscopy in an atomic beam, the hyperfine structure of 22 levels of the configuration 4f(13)5d6s6p in neutral ytterbium has been investigated for the two odd isotopes Yb-171 and Yb-173. 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 Yb-173 in part II of this work.
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.
The hyperfine structure of the53Cr resonance linesa7S3 ↔z7P2,3,4 has been investigated by means of laser saturation spectroscopy. By comparison of the experimental signal curves with theoretically computed spectra the hitherto unknown sign of the magnetic hyperfine coupling constant in thea7S3 ground state of53Cr could be determined unambigiously to be negative. Further the signs of the hfs coupling constants in thez7P states — so far only evaluated by theoretical reasoning — could be confirmed. Additionally the lifetimes of the statesz7P,z5P,f7D,z5F,e7D5 andy5P3 in the Cr I spectrum have been determined from the fluorescence decay after pulsed laser excitation.
