Studies on hyperfine structures of {sup left}(139)La by high resolution spectroscopic methods

摘要

Sub-Doppler spectra of La I were measured for tome transition lines by the polarization intermodulated excitation method (POLINEX) and the saturation absorption(SAS) spectroscopy method. From the obtained spectra, we determined the hyperfine structure of the upper level of 139{sup left}La intone and hyperfine constants A and B.