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Deformation-driving properties of the. nu. i/sub 13/2/(660)(1/2/sup +/ intruder orbital for Aapprox. 130 nuclei

Journal Article · · Phys. Rev. Lett.; (United States)
Several rotational-band structures have recently been observed in mass Aapprox. =130 nuclei, built on multiquasiparticle states of enhanced quadrupole deformation, the so-called superdeformed states (..beta..approx. =0.4). In /sup 137/Sm, a decoupled band built on the ..nu..i/sub 13/2/(660)(1/2/sup +/ single-quasineutron orbital, intruding from two oscillator shells above with a predicted ..beta..approx. =0.35, was observed to low spin and excitation energy. The role of this ..beta..-driving ..nu..i/sub 13/2/ orbital, which showed a 50% enhanced moment of inertia, is discussed in terms of the superdeformation in this mass region.
Research Organization:
Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
OSTI ID:
7057677
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 61:1; ISSN PRLTA
Country of Publication:
United States
Language:
English