Spectroscopy of sup 123 Cs: Configuration dependent crossing frequencies

Journal Article · Fri May 01 04:00:00 EDT 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.45.2177· OSTI ID:7043828

Hughes, J R; Fossan, D B; LaFosse, D R; Liang, Y; 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)

Several collective structures have been populated in the {ital Z}=55 nucleus {sup 123}Cs following the {sup 108}Pd({sup 19}F,4{ital n}) fusion-evaporation reaction at a beam energy of 76 MeV. The low-lying structure is found to be dominated by a decoupled rotational band built on the unique-parity {pi}{ital h}{sub 11/2} orbital. Rotational structures based on the normal-parity {ital g}{sub 7/2} proton and the {ital g}{sub 9/2} proton-hole orbitals are also observed. Rotational alignments occur in the {pi}{ital h}{sub 11/2} band at {h bar}{omega}{sub {ital c}}{approx}0.44 MeV, and in the {pi}{ital g}{sub 9/2}{sup {minus}1} band at {h bar}{omega}{sub {ital c}}=0.38 MeV, both attributed to the rotational alignment of a pair of {ital h}{sub 11/2} neutrons, despite the different crossing frequency. In addition, the {gamma}-vibrational band built on the {pi}{ital h}{sub 11/2} orbital has been observed feeding both signatures of the corresponding rotational cascade. These results are compared to cranked shell model calculations and to the systematics of the region.

• OSTI ID: 7043828
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663450 -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663560* -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CESIUM 123
CESIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
COLLECTIVE EXCITATIONS
CRANKING MODEL
DEFORMED NUCLEI
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FERMIONS
FLUORINE 19 REACTIONS
HADRONS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PALLADIUM 108 TARGET
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
ROTATIONAL STATES
SPIN
TARGETS