Abstract
The states in the yrast band of132 Sm have been identified for the first time up to Jπ=16+. The yrast band of130Nd has also been extended from Jπ=16+ to 24+. The energy of the first 2+ state in132Sm indicates that the quadrupole deformation ε2 ∼ 0.3 and is still increasing as the neutron number N decreases across the samarium isotopes. The results for130Nd allow the (h2/11)2 proton crossing frequency to be determined as ω=0.325 ± 0.005 MeV/ħ. This result is compared with cranked shell model predictions.
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This work was supported by the UK Science and Engineering Reaserch Council from whom four of us (PR, SMM, MJG and IJ) received postgraduate studentships. Y-J He was supported by the British Council Exchange scheme.
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Wadsworth, R., Regan, P., Mullins, S.M. et al. Yrast band spectroscopy of132Sm and130Nd. Z. Physik A - Atomic Nuclei 333, 411–412 (1989). https://doi.org/10.1007/BF01299698
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DOI: https://doi.org/10.1007/BF01299698