Shape coexistence in sup 132 Ba

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.1255· OSTI ID:5505844

Paul, E S; Fossan, D B; Liang, Y; Ma, R; Xu, N ^[1]

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

Rotational states have been populated in {gamma}-soft {sup 132}Ba following the {sup 122}Sn({sup 13}C,3{ital n}{gamma}) reaction. The ground state of this nucleus is predicted to possess maximal triaxiality {gamma}{similar to}{minus}30{degree}. Two {Delta}{ital I}=2 bands were established, based on quasineutron configurations with large negative {gamma} deformations close to the collective oblate shape {gamma}={minus}60{degree}. The bandhead of one of these bands, associated with a ({nu}{ital h}{sub 11/2}){sup 2} configuration, was found to be isomeric with a mean lifetime {tau}=12.5{plus minus}0.3 ns. A third {Delta}{ital I}=2 band was observed, built on a two-quasiproton configuration with a near-prolate shape ({gamma}{similar to}0{degree}). In addition, two {Delta}{ital I}=1 bands, built on mixed proton-neutron four-quasiparticle configurations with oblate shapes ({gamma}{similar to}{minus}60{degree}), were established.

• OSTI ID: 5505844
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Journal Name: Physical Review (Section) C: Nuclear Physics; (USA) Vol. 40:3; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651720* -- Nuclear Properties & Reactions
A=90-149
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALKALINE EARTH ISOTOPES
ANGULAR DISTRIBUTION
BARIUM 132
BARIUM ISOTOPES
BARYONS
CARBON 13 REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
DEFORMATION
DISTRIBUTION
DOPPLER EFFECT
ELECTROMAGNETIC RADIATION
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITED STATES
FERMIONS
GAMMA RADIATION
HADRONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
LIFETIME
M1-TRANSITIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MULTIPOLE TRANSITIONS
NEUTRONS
NUCLEAR DEFORMATION
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
QUASI PARTICLES
RADIATIONS
ROTATIONAL STATES
SHELL MODELS
STABLE ISOTOPES
TARGETS
TIN 122 TARGET
VAN DE GRAAFF ACCELERATORS