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.
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Bohn, H., Kienle, P., Proetel, D. et al. Structure of excited states in100Mo and102Mo from spectroscopy using18O induced reactions. Z Physik A 274, 327–334 (1975). https://doi.org/10.1007/BF01434042
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DOI: https://doi.org/10.1007/BF01434042