Ein level-crossing-Experiment zur Untersuchung der Hyperfeinstruktur des angeregten 32P3/2-Zustandes von 23Na

Abstract

The hyperfine structure of the 3²P_3/2-state of ²³Na has been investigated by means of the level-crossing-technique. Δm =2 and Δm = 1 crossing signals were detected by observing the field-dependence of the polarization of the fluorescence radiation in a magnetic field. From a detailed analysis of the experimental signal curves one obtains the magnetic hfs splitting constant A = (18.8 + 0.15) MHz, the electric quadrupole interaction constant B = (2.9 + 0.3) MHz and the lifetime of the excited 3²P_3/2-state τ= (1.59 + 0.04)·10^-8 sec. The nuclear electric quadrupole moment deduced from the ratio B/A is Q (²³Na) = (0.124 ± 0.015)·10^-24 cm² (without Sternheimer correction).