학술논문

β-decay spectroscopy of neutron-rich 160,161,162Sm isotopes.
Document Type
Article
Source
EPJ Web of Conferences. 2016, Vol. 123, p1-5. 5p.
Subject
*NEUTRONS spectra
*BETA decay
*ISOMERS spectra
*HEAVY nuclei
ISOTOPE mass
Language
ISSN
2101-6275
Abstract
Neutron-rich 160,161,162Sm isotopes have been populated at the RIBF, RIKEN via β decay for the first time. β-coincident γ rays were observed in all three isotopes including γ rays from the isomeric decay of 160Sm and 162Sm. The isomers in 160Sm and 162Sm have previously been observed but have been populated via β decay for the first time. The isomeric state in 162Sm is assigned a 4- ν7/2+ [633] ⊗ν1/2- [521] configuration based on the decay pattern. The level schemes of 160Sm and 162Sm are presented. The ground states in the parent nuclei 160Pm and 162Pm are both assigned a 6- ν7/2+ [633] ⊗ π5/2- [532] configuration based on the population of states in the daughter nuclei. Blocked BCS calculations were performed to further investigate the spin-parities of the ground states in 160Pm, 161Pm, and 162Pm, and the isomeric state in 162Sm. [ABSTRACT FROM AUTHOR]