학술논문
β-decay spectroscopy of neutron-rich 160,161,162Sm isotopes
Document Type
article
Author
Patel Z.; Podolyák Zs.; Walker P. M.; Regan P. H.; Söderström P.-A.; Watanabe H.; Ideguchi E.; Simpson G. S.; Nishimura S.; Browne F.; Doornenbal P.; Lorusso G.; Rice S.; Sinclair L.; Sumikama T.; Wu J.; Xu Z. Y.; Aoi N.; Baba H.; Bello Garrote F. L.; Benzoni G.; Daido R.; Dombrádi Zs.; Fang Y.; Fukuda N.; Gey G.; Go S.; Gottardo A.; Inabe N.; Isobe T.; Kameda D.; Kobayashi K.; Kobayashi M.; Komatsubara T.; Kojouharov I.; Kubo T.; Kurz N.; Kuti I.; Li Z.; Liu H. L; Matsushita M.; Michimasa S.; Moon C.-B.; Nishizuka H.; Nishizuka I.; Odahara A.; Şahin E.; Sakurai H.; Schaffner H.; Suzuki H.; Takeda H.; Tanaka M.; Taprogge J.; Vajta Zs.; Xu F. R.; Yagi A.; Yokoyama R.
Source
EPJ Web of Conferences, Vol 123, p 02002 (2016)
Subject
Language
English
ISSN
2100-014X
Abstract
Neutron-rich 160,161,162Sm isotopes have been populated at the RIBF, RIKEN via β 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−v72+[ 633 ]⊗v12−[ 521 ]${4^ - }v{{7 \over 2}^ + }\left[ {633} \right] \otimes v{{1 \over 2}^ - }\left[ {521} \right]$ 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−v72+[633]⊗π52−[532]${6^ - }v{{7 \over 2}^ + }\left[ {633} \right] \otimes \pi {{5 \over 2}^ - }\left[ {532} \right]$ 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