Collective and Non-Collective States in ¹¹⁶Cd Studied via the Beta-Decays of ¹¹⁶Ag^m1,m2,gs

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.80.054318· OSTI ID:979213

Batchelder, Jon Charles ^[1]; Wood, John L ^[2]; Garrett, Paul ^[3]; Rykaczewski, Krzysztof Piotr ^[1]; Bilheux, Jean-Christophe ^[1]; Bingham, Carrol R ^[1]; Carter, H Kennon ^[1]; Fong, Dennis ^[4]; Grzywacz, R. ^[5]; Hamilton, Joseph ^[4]; Hartley, D J ^[6]; Hwang, J. K. ^[4]; Krolas, W ^[7]; Kulp, David ^[2]; Larochelle, Y ^[5]; Piechzczek, A ^[8]; Ramayya, A. V. ^[4]; Spejewski, E. H. ^[9]; Stracener, Dan ^[10]; Tantawy, M. N. ^[5] ; Winger, J. A. ^[11]; Zganjar, E. F. ^[8]

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1. ORNL
2. Georgia Institute of Technology
3. University of Guelph
4. Vanderbilt University
5. University of Tennessee, Knoxville (UTK)
6. U.S. Naval Academy
7. H. Niewodniczanski Institute of Nuclear Physics (INP), Krakow, Poland
8. Louisiana State University
9. Oak Ridge Associated Universities (ORAU)
10. Oak Ridge National Laboratory (ORNL)
11. Mississippi State University (MSU)

We have re-investigated the beta decay of the three isomers of $$^{116}$$Ag at the Holifield Radioactive Ion Beam Facility (HRIBF). Through the use of half-life information, we have been able to construct individual decay schemes for each isomer, and correct what was a puzzling inconsistency with the published data, namely the beta feeding of 2$^+$ states by a 5$^+$ isomer. Our results indicate that the feeding of these levels arises from a 3$^+$ isomer in $$^{116}$$Ag. A total of 271 gamma-ray transitions (159 new) were assigned to 148 levels (94 new) from the beta-decay of $$^{116m1,m2,gs}$$Ag. Significant deviations are observed from expected U(5) symmetry in the 0$^+$ and 2$^+$ members of the previously assigned three-phonon quintuplet. Candidate states for the quadrupole-octupole quintuplet states and $$\pi$$g$$_{9/2}-\pi$$p$$_{1/2}$$, $$\pi$$g$$_{9/2}-\pi$$p$$_{3/2}$$, $$\nu$$h$$_{11/2}-\nu$$s$$_{1/2}$$, $$\nu$$h$$_{11/2}-\nu$$d$$_{3/2}$$, and $$\nu$$h$$_{11/2}-\nu$$d$$_{5/2}$$ broken pair states are assigned.

• Research Organization: Oak Ridge National Laboratory (ORNL); Holifield Radioactive Ion Beam Facility
• Sponsoring Organization: ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 979213
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 5 Vol. 80
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BETA DECAY
DECAY
FEEDING
HALF-LIFE
ISOMERS
RADIOACTIVE ION BEAMS
SYMMETRY