Hyperfine structure and fluorescence analysis of enriched 129I 2 at the 612 nm wavelength of the He-Ne laser

Abstract

Frequency differences between hyperfine structure (HFS) components of 129I 2 at the He-Ne laser emission range at 612 nm wavelength are determined by using the saturated absorption technique. The weaker lines are attributed to the R(113)14-4 transition of 129I 2. Computer fits have been made to the HFS splittings of the 129I 2 transitions. The best fits resulted in quadrupole coupling constants of ΔeqQ = 1365.30 MHz for P(11) 10-2 and constants of ΔC = 17.62 kHz and ΔC = 21.22 kHz respectively. A fluorescence analysis confirming the assigned transitions has been made.