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  • 1
    Electronic Resource
    Electronic Resource
    Nuclear structure of low-lying 0+ states in Ge and Se isotopes (1975)
    Springer
    The European physical journal 274 (1975), S. 251-257 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The following meanlives of levels in72Se have been measured using the recoildistance Doppler-shift method:Τ(2+, 862 keV)=3.1±0.6 ps,Τ(2+′, 1317 keV)=12.5±2.6 ps,Τ(4+, 1638 keV)=1.2±0.3 ps andΤ(6+, 2469 keV)≦0.7 ps. These meanlives yield sixB(E2) values which are discussed together with the known data of the depopulation of the excited 0+′ state at 937 keV. Systematics of 0+′ states in the mass region 70≲A≲100 show that the low excitation energy of the 0+′ states is correlated with subshell closures. This suggests that the previous interpretation of the 0+′ state in72Se as a rotational band head is questionable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437737
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure of excited states in100Mo and102Mo from spectroscopy using18O induced reactions (1975)
    Springer
    The European physical journal 274 (1975), S. 327-334 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The lifetimes have been determined for the 2+, 0+∼ and 4+ states in100Mo and102Mo using the recoil-distance Doppler-shift method. The states have been excited in100Mo by Coulomb excitation and in102Mo by the two-neutron transfer reaction induced by18O ions on a100Mo target. The study of the excitation function for the elastic and inelastic scattering on the ground and first excited 2+ state in100Mo at beam energies between 20 and 61 MeV shows that 40 MeV is the highest incident energy for pure Coulomb excitation. Above this energy nuclear absorption sets in and nuclear scattering contributes to the excitation of the 2+ state of100Mo. From the lifetimes of the 2+ and 4+ states deformation parameters of ¦β¦= 0.21 and ¦β¦=0.31 for100Mo and102Mo respectively were deduced. The 0+′ levels are not shape isomeric states, as suggested earlier, but they decay by enhancedE2 transitions to the first 2+ states. From a comparison with similar states in other transitional nuclei it is suggested that they are band heads forβ vibrational bands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434042
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    Paper (German National Licenses)
    Fulltext
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