Abstract
The hyperfine structure, isotope and isomeric shifts in the atomic transition 6p 2 P 3/2−7s 2 S 1/2, λ=535 nm have been measured for theI=7 andI=2 states of190, 192, 194, 196Tl; theI=1/2 andI=9/2 states of191Tl and the I=7 isomer of188Tl. The thallium isotopes were prepared as fast atomic beams at the GSI on-line mass separator following fusion reactions and — in some cases — subsequentβ-decay. The nuclear dipole moments, electric quadrupole moments and the change in the nuclear mean square charge radius are evaluated. Theuu-isotopes show an isomeric shift which changes sign between192Tl and194Tl.
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Dedicated to P. Armbruster on the occasion of his 60th birthday
The authors wish to thank Prof. Dr. B. Fricke, Kassel, for performing the Dirac-Fock- and Hartree-Fock-calculations, and Prof. M. Wilson, London, for the calculation of the specific mass shift. We also acknowledge the continuous support of the GSI massseparator crew. Two of us (S.B., G.S.) are indebted to the Humboldt foundation. This work was supported by the Gesellschaft für Schwerionenforschung, Darmstadt and the Bundesministerium für Forschung und Technologie, Bonn.
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Menges, R., Dinger, U., Boos, N. et al. Nuclear moments and the change in the mean square charge radius of neutron deficient thallium isotopes. Z. Physik A - Hadrons and Nuclei 341, 475–479 (1992). https://doi.org/10.1007/BF01301392
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DOI: https://doi.org/10.1007/BF01301392