Search for Intrinsic Excitations in 152Sm

Abstract

The 685 keV excitation energy of the first excited 0+ state in 152Sm makes it an attractive candidate to explore expected two-phonon excitations at low energy. Multiple-step Coulomb excitation and inelastic neutron scattering studies of 152Sm are used to probe the E2 collectivity of excited 0+ states in this "soft" nucleus and the results are compared with model predictions. No candidates for two-phonon K=0+ quadrupole vibrational states are found. A 2+, K=2 state with strong E2 decay to the first excited K=0+ band and a probable 3+ band member are established.

4 pages, 6 figures, accepted for publication as a Rapid Communication in Physical Review C

References in corpus (1)

• N=90 region: The decays of {152m,g}Eu to 152Sm

Cited by in corpus (13)

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• Signatures of shape phase transitions in odd-mass nuclei
• Consistent description of nuclear charge radii and electric monopole transitions
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• Correlating radii and electric monopole transitions of atomic nuclei
• $\gamma$-soft ${}^{146}$Ba and the role of non-axial shapes at N ~ 90
• Empirical signatures of shape phase transitions in nuclei with odd nucleon numbers
• Quadrupole and monopole transition properties of $0_2^{+}$ in Gd isotopes
• Evidence of the Excited X(5)-like Critical-Point Symmetry Structures in 152Sm