Hyperfeinstrukturuntersuchung des 6p ² P _3/2-Terms im Au I-Spektrum durch Resonanzstreuung von Licht

Abstract

The hyperfine structure of the 6p ² P _3/2-state in the Au I-spectrum was investigated by level-crossing technique. The magnetic field dependence of the resonance radiation (σ−orπ-components in exciting and scattered light) was observed between Zeeman and Paschen-Back region. The measured structure of the signals yields ¦A¦=14.0 (5) MHz, ¦B¦=327.6 (1.6) MHz,B/A=+23.4(8). The measured radiation widthγ/2π=34.6 (2.0) MHz has the same order in magnitude as the magnetic coupling constant. Therefore interference and decoupling effects had to be considered. The positive sign of theB/A ratio could be deduced by comparing the measured with the calculated signal-structure. Without the Sternheimer correction from the measuredB/A ratio of the 6p ² P _3/2-state results Q=1.04 · 10⁻²⁴ cm², fromB and the fine structure splitting results Q=0.57 · 10⁻²⁴ cm².