Vol. 36, Issue 4, pp. 529-533

Abstract

Studies of the hyperfine structure and the isotope shifts in the 461.9 nm (¹S₀–³P₁) magnetic-dipole line of Pb I are presented. As a light source the electrodeless discharge tube was used. The high resolution spectral apparatus consisted of a silver coated Fabry–Perot etalon and a grating spectrograph combined with a CCD camera used as a detector. In the analysis of the spectra a computer simulation technique was used. The experiments with the isotope ²⁰⁷Pb yielded the hyperfine structure splitting constant A for the ³P₁ level of the 6s²6p² ground configuration. In the experiment with natural lead the isotope shifts between four stable isotopes (204, 206, 207, 208) were measured.