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Charge radii and shape transitions in short-lived Hg, Au and Pt isotopes

  • Hyperfine Interactions in Atomic and Nuclear Physics
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Abstract

The hyperfine structure and the isotope shift of very neutron-deficient Au and Pt isotopes have been determined at the on-line isotope separator ISOLDE/CERN by resonance ionization mass spectroscopy combined with pulsed-laser induced desorption of the implanted radioactive sample. The changes of the mean-square charge radii were determined for the isotopes184Au (T1/2=53 s) and183Au (T1/2=42 s) as well as for 15 isotopes of platinum in the range between198Pt (stable) and183Pt (T1/2=6.5 min). The strong deformation of185Au (|β2|≃0.25) persits down to183Au. In183Pt nearly the same value of |β2| is reached but the deformation is build up rather smoothly in contrast to the neighbouring isotopes of gold and mercury. The magnetic moment of183Pt was found to be μ1=+0.51(3)μ N .

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Authors and Affiliations

  1. Inst. für Physik, Univ. Mainz, Postfach 3980, D-6500, Mainz, FRG

    Th. Hilberath, St. Becker, G. Bollen, M. Gerber, H. -J. Kluge, U. Krönert & G. Passler

  2. CERN, ISOLDE Collaboration, CH-1211, Geneva 23, Switzerland

    Th. Hilberath, St. Becker, G. Bollen, M. Gerber, H. -J. Kluge, U. Krönert & G. Passler

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  1. Th. Hilberath
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  2. St. Becker
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  3. G. Bollen
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  4. M. Gerber
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  5. H. -J. Kluge
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  6. U. Krönert
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  7. G. Passler
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Hilberath, T., Becker, S., Bollen, G. et al. Charge radii and shape transitions in short-lived Hg, Au and Pt isotopes. Hyperfine Interact 59, 97–100 (1990). https://doi.org/10.1007/BF02401198

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  • DOI: https://doi.org/10.1007/BF02401198

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