Shape coexistence in /sup 187/Au

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.40.132· OSTI ID:5896500

Johansson, J K; Popescu, D G; Rajnauth, D D; Waddington, J C; Carpenter, M P; Courtney, L H; Janzen, V P; Larabee, A J; Liu, Z M; Riedinger, L L; others, and

The level structure of odd-proton /sup 187/Au was studied using the /sup 172/Yb(/sup 19/F,4/ital n/) reaction. Gamma-gamma coincidence, angular distributions and ..gamma..-..gamma..-time measurements were used to establish the energies, spins, parities, and lifetimes for the states in the decay scheme of /sup 187/Au. Both prolate and oblate structures have been established. The prolate bands are built on the ..pi../ital h//sub 9/2/ ..cap alpha..=+-(1/2) and the ..pi../ital i//sub 13/2/ (..cap alpha..=1/2) particle states. Anoblate, strongly coupled band built on a 90+-10 ns isomericstate is reported for the first time. A second oblate structure built on the/ital h//sub 11/2/ proton-hole state was established to much higher spinthan before. The backbend present in the ..pi../ital i//sub 13/2/ band hasbeen interpreted as the alignment of a pair of /ital h//sub 9/2/ protons.

• Research Organization: Tandem Accelerator Laboratory, McMaster University, Hamilton, Canada L8S 4K1(CA); Department of Physics, University of Tennessee, Knoxville, Tennessee 37996
• OSTI ID: 5896500
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 40:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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651820* -- Nuclear Properties & Reactions
A=150-189
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
DATA
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EXPERIMENTAL DATA
FERMIONS
FLUORINE 19 REACTIONS
GAMMA RADIATION
GOLD 187
GOLD ISOTOPES
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LIFETIME
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
RADIATIONS
RADIOISOTOPES
SHELL MODELS
SPIN
TARGETS
YTTERBIUM 172 TARGET