Band properties of the transitional nucleus {sup 189}Pt

Journal Article · Wed May 12 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3442635· OSTI ID:21362054

Hua, W; Zhou, X H ^[1]; Zhang, Y H; Zheng, Y; Liu, M L; Ma, F; Guo, S; Ma, L; Wang, S T; Zhang, N T; Fang, Y D; Lei, X G; Guo, Y X ^[1]; Oshima, M; Toh, Y; Koizumi, M; Hatsukawa, Y ^[2]; Qi, B; Zhang, S Q; Meng, J ^[3]

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1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)
2. Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
3. School of Physics, and State-Key Lab. Nucl. Phys. and Tech., Peking University, Beijing 100871 (China)

High-spin states in {sup 189}Pt have been studied with the in-beam gamma-spectroscopy method via the {sup 176}Yb({sup 18}O,5n) reaction at beam energies of 88 MeV and 95 MeV. A new level scheme of {sup 189}Pt has been established. Rotational bands based on the upsiloni{sub 13/2}{sup -1}, upsilonf{sub 5/2}(p{sub 3/2}) and upsiloni{sub 13/2}{sup -2}upsilonf{sub 5esol2}(p{sub 3/2}) configurations, as well as several structures with irregular level spacings, have been observed. Properties of rotational bands have been analyzed in the framework of triaxial particle-rotor model. A gammaapprox-30 deg. triaxial shape and a near prolate shape have been proposed to the upsiloni{sub 13/2}{sup -1} and upsilonf{sub 5/2}(p{sub 3/2}) bands, respectively. Two DELTAI = 2 transition sequences with similar energies have been observed, and they have been proposed to be associated with the upsiloni{sub 13/2}{sup -2}upsilonf{sub 5/2}(p{sub 3/2}) configuration. According to the relevant Nilsson orbitals, the bands built on the upsiloni{sub 13/2}{sup -2}upsilonf{sub 5/2}(p{sub 3/2}) configuration could be interpreted as a pair of pseudo-spin partner.

• OSTI ID: 21362054
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1235; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR MOMENTUM
BEAMS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELECTROSTATIC ACCELERATORS
ENERGY LEVELS
ENERGY RANGE
EVEN-ODD NUCLEI
EXCITED STATES
GAMMA SPECTROSCOPY
HEAVY ION REACTIONS
HEAVY NUCLEI
HIGH SPIN STATES
HOURS LIVING RADIOISOTOPES
ION BEAMS
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
OXYGEN 18 BEAMS
OXYGEN 18 REACTIONS
PARTICLE PROPERTIES
PARTICLE-CORE COUPLING MODEL
PLATINUM 189
PLATINUM ISOTOPES
RADIOISOTOPES
ROTATIONAL STATES
SPECTROSCOPY
SPIN
TANDEM ELECTROSTATIC ACCELERATORS
TARGETS
YTTERBIUM 176 TARGET