Hyperfine structure and isotope shift study in singly ionized lead

Hyperfine structure and isotope shifts in five optical transitions: 424.5 nm ($6s^25f\ ^2\textrm{F}_{7/2}$–$6s^26d^2\ \textrm{D}_{5/2}$), 537.2 nm ($6s^25f\ ^2\textrm{F}_{7/2}$–$6s6p^2\ ^4\textrm{P}_{5/2}$), 554.5 nm ($6s^27d\ ^2\textrm{D}_{5/2}$–$6s^27p\ ^2\textrm{P}_{3/2}$), 560.9 nm ($6s^27p^2\ \textrm{P}_{3/2}$–$6s^27s\ ^2\textrm{S}_{1/2}$) and 666.0 nm ($6s^27p\ ^2\textrm{P}_{1/2}$–$6s^27s\ ^2\textrm{S}_{1/2}$) of Pb II have been measured. As a light source the discharge tube was used. The hyperfine structure measurements were performed using metallic isotope 207Pb. For isotope shifts measurements natural lead 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 hyperfine structure observations yielded the splitting constants A for seven levels of Pb II. The isotope shift studies enabled to separate the mass and the field shifts and to determine values of changes of the mean square nuclear charge radii