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Configurations and decay hindrances of high-K states in 180Hf.
- Source :
-
Physical Review C . Dec2016, Vol. 94 Issue 6, p1-1. 1p. - Publication Year :
- 2016
-
Abstract
- Multi-quasiparticle high-K states, several of which are isomeric, were observed in 180Hf with the Gammasphere array. Lifetimes in the ns-μs range were determined using centroid-shift and decay measurements within a μs coincidence time window. The configurations of high-K states involve two and four quasiparticles, with states up to Kπ=(18-) established. High-K excitations are found to be progressively more favored with increasing excitation energy. The K quantum number is quite robust up to the highest spins observed, as evidenced by the large values of the reduced hindrance for isomeric decays. Rotational bands built on three high-K states are identified, and the measured branching ratios in these sequences enable the assignment of underlying configurations. Multi-quasiparticle calculations using the Lipkin-Nogami approach for pairing, with blocking included, reproduce the observed high-K energies quite well. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HAFNIUM isotopes
*BRANCHING ratios
*QUANTUM states
Subjects
Details
- Language :
- English
- ISSN :
- 24699985
- Volume :
- 94
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Physical Review C
- Publication Type :
- Academic Journal
- Accession number :
- 120789556
- Full Text :
- https://doi.org/10.1103/PhysRevC.94.064304