Coexistence of prolate and oblate structures up to spin 40h-dash-bar in /sup 152/Dy

Journal Article · Mon Jun 23 04:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.56.2680· OSTI ID:5520091

Nyako-acute-accent, B M; Simpson, J; Twin, P J; Howe, D; Forsyth, P D; Sharpey-Schafer, J F

A rotational band with a constant moment of inertia s-italicc-italicr-italicI-italic/sup (2)/ = 58h-dash-bar/sup 2/ MeV/sup -1/ has been observed in /sup 152/Dy extending from spin 18/sup +/ to 40/sup +/. The band coexists with the known oblate yrast states although it is up to 1.5 MeV higher in excitation energy. It carries 4% of the decay strength and it is proposed to be a four-quasiparticle aligned structure. It is conjectured that the superdeformed states at the highest spins may decay via this band rather than via the yrast oblate states.

• Research Organization: Science and Engineering Research Council, Daresbury Laboratory, Warrington WA4XD, United Kingdom
• OSTI ID: 5520091
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 56:25; ISSN PRLTA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM 48 REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
DEFORMATION
DYSPROSIUM 152
DYSPROSIUM ISOTOPES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITED STATES
GAMMA SPECTRA
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
MOMENT OF INERTIA
NUCLEAR DEFORMATION
NUCLEAR MODELS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEI
PALLADIUM 108 TARGET
PARITY
PARTICLE PROPERTIES
POTENTIALS
PROBABILITY
QUASI PARTICLES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
ROTATIONAL STATES
SHELL MODELS
SPECTRA
SPIN
TARGETS
WOODS-SAXON POTENTIAL
YRAST STATES