Abstract

The hyperfine structure and isotope shift in the 283.3-nm resonance line of cyclotron-produced 203Pb was measured by absorption spectroscopy with use of a 9.1-m focal-length Czerny–Turner spectrometer. The measured hyperfine interaction constants in the 6p7s3P1 state are A = 67.1(12) × 10−3 cm−1 and B = 2(5) × 10−3 cm−1. The resulting nuclear magnetic moment, μ = 0.672 (12)μN, is in reasonable accord with the value predicted by the shell model with core excitation. The measured isotope shift is IS = −195(4) × 10−3 cm−1, relative to 208Pb. The resulting odd–even staggering parameter, γ = 0.39(14), lends support to recent calculations of Talmi [ Nucl. Phys. A 423, 189 ( 1984)].

© 1987 Optical Society of America

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