Abstract
A rotational band of nine γ-rays has been observed in133Sm. The moment of inertia of the band indicates that it has a higher deformation than expected for states in nuclei in this region. The properties are such that it can be interpreted as being due to the odd neutron occupying the ν i2/13 nn intruder orbital. This is the first evidence for the occupation of this orbital in nuclei with neutron number N<73.
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Wadsworth, R., Regan, P., Mullins, S.M. et al. Evidence for an i13/2 neutron band in133Sm. Z. Physik A - Atomic Nuclei 333, 409–410 (1989). https://doi.org/10.1007/BF01299697
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DOI: https://doi.org/10.1007/BF01299697