Abstract Mean-square charge radii and magnetic moments have been measured for the neutron deficient lead isotopes, 182–190Pb. The measurement was performed at the ISOLDE online mass separator, using the in-source resonance ionization spectroscopy technique. The wavelength of the first excitation step for the resonance ionization laser ion source (RILIS) was scanned over the resonance(s) whilst the α- and γ-ray spectra from the decay of the Pb isotopes were recorded as a function of the wavelength. The isotope shift and, in the case of odd-A isotopes, the hyperfine splitting were deduced. The rms-charge radii of the very neutron deficient Pb isotopes follow the smooth trend of the heavier isotopes. This finding indicates a spherical shape for the lead ground states at the neutron mid-shell (N=104), where the excitation energy of the oblate 0+ state in the even isotopes reaches its minimum.


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    Title :

    Study of the neutron deficient 182–190Pb isotopes by simultaneous atomic- and nuclear-spectroscopy


    Contributors:
    Seliverstov, M. (author) / Andreyev, A. (author) / Barré, N. (author) / Witte, H. (author) / Fedorov, D. (author) / Fedoseyev, V. (author) / Franchoo, S. (author) / Genevey, J. (author) / Huber, G. (author) / Huyse, M. (author)

    Published in:

    LASER 2006 ; 225-231


    Publication date :

    2007-01-01


    Size :

    7 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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