11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure – achievements of the past two decades | |
Nuclear Structure Studies of Some Neutron Rich Nuclei Produced in 252Cf Spontaneous Fission | |
Ramayya, A.V.^1 ; Hamilton, J.H.^1 ; Hwang, J.K.^1 | |
Department of Physics and Astronomy, Vanderbilt University, Nashville | |
TN | |
37235, United States^1 | |
关键词: Angular correlations; Collective band; Gamma transition; Gammasphere detector arrays; Level structure; Neutron-rich nuclei; Nuclear structure; Spontaneous fission; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/580/1/012017/pdf DOI : 10.1088/1742-6596/580/1/012017 |
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来源: IOP | |
【 摘 要 】
High spin states of neutron-rich nuclei such as133,134Te,93Sr,105Nb have been studied by measuring γ- γ- γ coincidences (cube), γ- γ- γ- γ coincidences (hypercube) and angular correlations from the spontaneous fission of252Cf with the LBNL Gammasphere detector array. Four types of particle-hole bands built on the known 334.3 keV isomer in133Te were identified. The level structure of93Sr is interpreted, in part, as arising from the weak coupling of the 1d5/2 neutron hole to the yrast states of the94Sr core. The g-factor of the 4+state in134Te was measured, for the first time, by using a new technique developed for measuring angular correlations with Gammasphere. A new level scheme of105Nb was established. Three new collective bands were identified with a total of 14 new levels and 36 new γ transitions. In117-122Cd, a shift to more slightly deformed structures was found where the excited levels do not fit the long held picture of one, two and three phonon bands.
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Nuclear Structure Studies of Some Neutron Rich Nuclei Produced in 252Cf Spontaneous Fission | 1153KB | download |