Year: 2020
Type: article
Abstract: We report the first observation of two wobbling bands in ^{183}Au, both of which were interpreted as the transverse wobbling (TW) band but with different behavior of their wobbling energies as a function of spin. It increases (decreases) with spin for the positive (negative) parity configuration. The crucial evidence for the wobbling nature of the bands, dominance of the E2 component in the ΔI=1 transitions between the partner bands, is provided by the simultaneous measurements of directional correlation from the oriented states ratio and the linear polarization of the γ rays. Particle rotor model calculations with triaxial deformation reproduce the experimental data well. A value of spin, I_{m}, has been determined for the observed TW bands below which the wobbling energy increases and above which it decreases with spin. The nucleus ^{183}Au is, so far, the only nucleus in which both the increasing and the decreasing parts are observed and thus gives the experimental evidence of the complete transverse wobbling phenomenon.
Source: Physical Review Letters
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: U.S. Department of Energy, Department of Science and Technology, Ministry of Science and Technology, India, University Grants Commission, Department of Atomic Energy, Government of India, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Office of Science, Science and Engineering Research Board, Nuclear Physics
Awards: G1417458142, NUCLEAR ASTROPHYSICAL PROBES OF MATTER AT HIGHT TEMPERATUREAND DENSITY, G1904439570, G222768804, G2406556267, G256797447, SINGLE-PARTICLE AND COLLECTIVE PHENOMENA IN NUCLEI, G342808748, G5177921384, G5295195422, G5583419562, SINGLE PARTICLE AND COLLECTIVEPHENOMENA IN NUCLEI, G6635316349, SINGLE-PARTICLE AND COLLECTIVE PHENOMENA IN NUCLEI, G7001362199, NUCLEAR PROPERTIES AT EXTREME DENSITY, TEMPERATURE, SPIN AND ISOSPIN, G8216640622, NUCLEAR PROPERTIES AT EXTREME DENSITY, TEMPERATURE, SPIN AND ISOSPIN
OpenAlex ID: W3083365310