High-spin level structure of {sup 115}Rh: Evolution of triaxiality in odd-even Rh isotopes

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.014304· OSTI ID:21596550

Liu, S H ^[1]; Hamilton, J H; Ramayya, A V; Brewer, N T; Hwang, J K ^[1]; Gelberg, A ^[2]; Gu, L; Yeoh, E Y; Zhu, S J ^[3]; Luo, Y X ^[1]; Rasmussen, J O ^[4]; Ma, W C ^[5]; Daniel, A V ^[1]; Oganessian, Yu Ts; Ter-Akopian, G M ^[6]

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1. Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States)
2. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany)
3. Department of Physics, Tsinghua University, Beijing 100084 (China)
4. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
5. Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762 (United States)
6. Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)

High-spin excited states in the neutron-rich nucleus {sup 115}Rh have been identified for the first time by studying prompt {gamma} rays from the spontaneous fission of {sup 252}Cf with the Gammasphere detector array. A new yrast band and a sideband are built in {sup 115}Rh. This level scheme is proposed to be built on the 7/2{sup +} ground state. The existence of a large signature splitting and an yrare band in {sup 115}Rh shows typical features of a triaxially deformed nucleus. The rigid triaxial rotor plus particle model is used to interpret the level structure of {sup 115}Rh. The level energies, the {gamma} branching ratios, the large signature splitting in the yrast band, and the inverted signature splitting in the yrare band in {sup 115}Rh are reproduced very well. Strong K mixing occurs in {sup 115}Rh at high spin.

• OSTI ID: 21596550
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevC.84.014304; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BRANCHING RATIO
CALIFORNIUM 252
DEFORMED NUCLEI
ENERGY LEVELS
EVOLUTION
EXCITED STATES
GAMMA RADIATION
GAMMA SOURCES
GROUND STATES
MIXING
NEUTRON-RICH ISOTOPES
RHODIUM 115
SPIN
SPONTANEOUS FISSION
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
DECAY
DIMENSIONLESS NUMBERS
ELECTROMAGNETIC RADIATION
EVEN-EVEN NUCLEI
FISSION
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPES
MILLISECONDS LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
RADIATION SOURCES
RADIATIONS
RADIOISOTOPES
RHODIUM ISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
YEARS LIVING RADIOISOTOPES