High-spin states in {sup 188}Au: Further evidence for nonaxial shape

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.064303· OSTI ID:21499255

Fang, Y D; Zhang, Y H; Zhou, X H; Liu, M L; Guo, Y X ^[1]; Oshima, M; Toh, Y; Koizumi, M; Kimura, A; Hatsukawa, Y ^[2]; Xu, F R; Shi, Y ^[3]; Morikawa, T; Nakamura, M ^[4]; Sugaware, M ^[5]; Kusakari, H ^[6]

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1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou (China)
2. Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
3. Department of Technical Physics and MOE Key Laboratory, Peking University, Beijing 100871 (China)
4. Department of Physcis, Kyushu University, Fukuoka 812-81 (Japan)
5. Chiba Institute of Technology, Narashino, Chiba 275-0023 (Japan)
6. Chiba University, Inage-ku, Chiba 263-8512 (Japan)

The high-spin level structure of {sup 188}Au has been investigated via the {sup 173}Yb({sup 19}F,4n{gamma}) reaction at beam energies of 86 and 90 MeV. The previously reported level scheme has been modified and extended significantly. A new I{sup {pi}}=20{sup +} state associated with {pi}h{sub 11/2}{sup -1} x {nu}i{sub 13/2}{sup -2}h{sub 9/2}{sup -1} configuration and two new rotational bands, one of which is built on the {pi}h{sub 9/2} x {nu}i{sub 13/2} configuration, have been identified. The prolate-to-oblate shape transition through triaxial shape has been proposed to occur around {sup 188}Au for the {pi}h{sub 9/2} x {nu}i{sub 13/2} bands in odd-odd Au isotopes. Evidence for {pi}h{sub 11/2}{sup -1} x {nu}i{sub 13/2}{sup -1} structure of nonaxial shape with {gamma}<-70 deg. has been obtained by comparison with total Routhian surface and cranked-shell-model calculations.

• OSTI ID: 21499255
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BEAMS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COMPARATIVE EVALUATIONS
CONFIGURATION
DECAY
ELECTRON CAPTURE RADIOISOTOPES
EMISSION
ENERGY LEVELS
ENERGY RANGE
EVALUATION
EXCITED STATES
FLUORINE 19 REACTIONS
GAMMA DECAY
GOLD 188
GOLD ISOTOPES
HEAVY ION REACTIONS
HEAVY NUCLEI
HIGH SPIN STATES
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
NEUTRON EMISSION
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
ROTATIONAL STATES
SHAPE
SHELL MODELS
SPIN
TARGETS
YTTERBIUM 173 TARGET