Coexistence of octupole deformation and beta and gamma vibrational bands in 148Ce

Wang, Enhong H.; Brewer, Nathan T.; Hamilton, Joseph H.; Ramayya, Akunuri V.; Yzaguirre, W. A.; Hwang, Jae -Kwang; Liu, Shaohua H.; Luo, Yixiao X.; Rasmussen, John O.; Zhu, Shengjiang J.; Ter-Akopian, Gurgen M.; Oganessian, Yury Ts.

doi:10.1016/j.nuclphysa.2021.122281

Title: Coexistence of octupole deformation and beta and gamma vibrational bands in ¹⁴⁸Ce

Journal Article · Thu Jul 22 00:00:00 EDT 2021 · Nuclear Physics. A

DOI:https://doi.org/10.1016/j.nuclphysa.2021.122281· OSTI ID:1902662

Wang, Enhong H. ^[1];

^[1]; Hamilton, Joseph H. ^[1]; Ramayya, Akunuri V. ^[1]; Yzaguirre, W. A. ^[1]; Hwang, Jae -Kwang ^[1]; Liu, Shaohua H. ^[1]; Luo, Yixiao X. ^[2]; Rasmussen, John O. ^[2]; Zhu, Shengjiang J. ^[3]; Ter-Akopian, Gurgen M. ^[4]; Oganessian, Yury Ts. ^[4]

Vanderbilt Univ., Nashville, TN (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Tsinghua Univ., Beijing (China)
Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation)

From γ-γ-γ and γ-γ-γ-γ coincidence studies of spontaneous fission of ²⁵²Cf, new high spin states in ¹⁴⁸Ce were identified. The octupole bands with s = +1 and s = -1 are expanded with spins with 28⁺ and 18^-, respectively. Importantly, a 1γ vibrational band has been established up to 14⁺ and a 1β vibrational band up to 6⁺. The levels in γ and β bands in ¹⁴⁸Ce are compared systematically to those in neighboring ¹⁵⁰Nd and ¹⁵²Sm isotones. Further, this comparison informs the role of deformation and shape transition in this mass region. New 3^- and 5^- members of the s = +1 octupole band were observed.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Natural Science Foundation of China (NSFC); Russian Foundation for Basic Research; INTAS Grant

Grant/Contract Number:: AC02-05CH11231; FG05-88ER40407; 11175095; 08-02-00089; 03-51-4496

OSTI ID:: 1902662

Journal Information:: Nuclear Physics. A, Vol. 1015; ISSN 0375-9474

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Coexistence of octupole deformation and beta and gamma vibrational bands in 148Ce

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Title: Coexistence of octupole deformation and beta and gamma vibrational bands in ¹⁴⁸Ce