Evidence for triaxial deformation near N=86: Collective bands in 152,153Dy and 153Ho
Creators
- 1. Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE (United Kingdom)
- 2. Department Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada)
- 3. CLRC Daresbury Laboratory, Daresbury, Warrington WA4 4AD (United Kingdom)
- 4. Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex (France)
- 5. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- 6. C.S.N.S.M., IN2P3-C.N.R.S., F-91405 Orsay Campus (France)
Description
The N=86,87 isotopes of dysprosium and holmium have been investigated using the Eurogam II γ-ray spectrometer. A new collective rotational band has been observed in 153Ho and the previously observed νi13/2 band in 153Dy has been extended to much higher spin. Comparing these bands and similar bands in 152Dy with the collective bands in the N=90 isotopes of Dy, Ho, and Er suggests that the first h11/2 proton crossing is not observed at N=86,87. This observation has led to the reinterpretation of four of the previously observed bands in 152Dy. It is proposed that the low deformation collective bands in 152,153Dy and 153Ho are associated with a triaxial shape with large positive gamma and that they have a similar origin to the recently observed triaxial superdeformed bands in 163-165Lu
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 66
- Journal Issue
- 4
- Journal Page Range
- p. 044305-044305.9
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36012654
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- COLLECTIVE MODEL; DYSPROSIUM 152; DYSPROSIUM 153; ENERGY-LEVEL TRANSITIONS; GAMMA SPECTRA; HIGH SPIN STATES; HOLMIUM 153; LUTETIUM 165; NUCLEAR DEFORMATION; NUCLEAR STRUCTURE; PROTONS; ROTATIONAL STATES; SPIN; SUPERDEFORMED NUCLEI
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; DEFORMATION; DEFORMED NUCLEI; DYSPROSIUM ISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EXCITED STATES; FERMIONS; HADRONS; HOLMIUM ISOTOPES; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOTOPES; LUTETIUM ISOTOPES; MATHEMATICAL MODELS; MINUTES LIVING RADIOISOTOPES; NUCLEAR MODELS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; RARE EARTH NUCLEI; SPECTRA
Optional Information
- Notes
- (c) 2002 The American Physical Society