Particle-hole induced intruder bands in {sup 117}Sb and {sup 119}Sb

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.760· OSTI ID:528160

LaFosse, D R; Fossan, D B; Hughes, J R; Liang, Y; Schnare, H; Vaska, P; Waring, M P; Zhang, J ^[1]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)

Collective structures have been investigated via {gamma}-ray studies in {sup 117,119}Sb. Previously observed strongly coupled ({pi}g{sub 9/2}){sup {minus}1} bands in both nuclei involving 1p-1h proton excitations across the Z=50 gap have been extended, and an alignment of h{sub 11/2} neutrons identified. New negative-parity strongly coupled bands based on this proton configuration have also been observed in both nuclei. Decoupled bands involving 2p-2h excitations across the gap have been observed in {sup 119}Sb, similar to those presented earlier for {sup 117}Sb. These bands are interpreted as due to the coupling of a low-K valence proton to the ({pi}g{sub 7/2}d{sub 5/2}){sup 2}{circle_times}({pi}g{sub 9/2}){sup {minus}2} deformed state of the respective {sub 50}Sn core nuclei. Anomalies in the expected h{sub 11/2} neutron crossing of these bands are discussed. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 528160
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 56; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALIGNMENT
ANTIMONY 117
ANTIMONY 119
COLLECTIVE EXCITATIONS
DEFORMED NUCLEI
GAMMA RADIATION
PARITY
PARTICLE-HOLE MODEL
PROTONS