Competition between rotational and aligned-particle high-spin excitations in /sup 153/ /sup 154/Dy
Conference
·
OSTI ID:6205401
High-spin level structure of the transitional N = 87,88 /sup 153/ /sup 154/Dy nuclei have been studied using /sup 124/Sn(/sup 34/S,xn) reactions. In both nuclei the lower part of the level scheme includes decoupled rotational bands indicating prolate deformation in yrast structures between I = 17/2 and 41/2 in /sup 153/Dy and up to I = 30 in /sup 154/Dy. Above these collective bands the level structure becomes irregular, very similar to the aligned multiparticle structure in /sup 152/Dy. The yrast 2.3 ns 47/2 isomer at 5591 keV shows that aligned-particle excitations compete successfully with collective rotation above 5 MeV in /sup 153/Dy. The similar change occurs in /sup 154/Dy above 10 MeV after the S-band has crossed with the S'-band. The aligned configurations are connected with the oblate shape of the nucleus and our results show that a transition from a basically prolate to oblate shape occurs in /sup 153/Dy above I = 41/2 and in /sup 154/Dy above I = 32.
- Research Organization:
- Purdue Univ., Lafayette, IN (USA); Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6205401
- Report Number(s):
- CONF-8403127-5; ON: DE85004068
- Country of Publication:
- United States
- Language:
- English
Similar Records
{sup 154}Dy level structure beyond the {open_quotes}terminating state{close_quotes}
Structural changes along and above the yrast line of /sup 154/Dy
Shell structure at high spin and the influence on nuclear shapes
Journal Article
·
Sun Oct 01 00:00:00 EDT 1995
· Bulletin of the American Physical Society
·
OSTI ID:256478
Structural changes along and above the yrast line of /sup 154/Dy
Journal Article
·
Mon Jul 04 00:00:00 EDT 1988
· Phys. Rev. Lett.; (United States)
·
OSTI ID:6965955
Shell structure at high spin and the influence on nuclear shapes
Conference
·
Thu Dec 31 23:00:00 EST 1981
·
OSTI ID:6366347
Related Subjects
651823* -- Nuclear Properties & Reactions
A=150-189
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DYSPROSIUM 153
DYSPROSIUM 154
DYSPROSIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FUSION REACTIONS
HEAVY ION REACTIONS
HIGH SPIN STATES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
ROTATIONAL STATES
SULFUR 34 REACTIONS
TARGETS
TIN 124 TARGET
A=150-189
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DYSPROSIUM 153
DYSPROSIUM 154
DYSPROSIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FUSION REACTIONS
HEAVY ION REACTIONS
HIGH SPIN STATES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
ROTATIONAL STATES
SULFUR 34 REACTIONS
TARGETS
TIN 124 TARGET