A discrete superdeformed rotational band has been discovered in 144Gd following the reaction 100Mo(48Ti, 4n)144Gd at 221 MeV. The dynamical moment of inertia shows a sharp irregularity at ħω=0.45 MeV. The intensity of the γ-ray transitions suggests that the irregularity can be associated with a backbend, which is interpreted in terms of the N=6 proton band crossing. The experimental results are in good agreement with cranked mean field calculations, which indicate the presence of large shell gaps for both protons and neutrons.
Proton backbend in the doubly-magic superdeformed nucleus Gd144
LUNARDI, SANTO;PAVAN, PIETRO;
1994
Abstract
A discrete superdeformed rotational band has been discovered in 144Gd following the reaction 100Mo(48Ti, 4n)144Gd at 221 MeV. The dynamical moment of inertia shows a sharp irregularity at ħω=0.45 MeV. The intensity of the γ-ray transitions suggests that the irregularity can be associated with a backbend, which is interpreted in terms of the N=6 proton band crossing. The experimental results are in good agreement with cranked mean field calculations, which indicate the presence of large shell gaps for both protons and neutrons.File in questo prodotto:
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