Identification of levels in neutron-rich {sup 145}Ce and {sup 147}Ce nuclei

High-spin structures in the neutron-rich nuclei {sup 145}Ce and {sup 147}Ce produced in the spontaneous fission of {sup 252}Cf have been investigated by prompt {gamma}-ray spectroscopy. A collective band structure in {sup 145}Ce is identified. Several sidebands along with the new high-spin states in...

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Veröffentlicht in:Physical review. C, Nuclear physics Nuclear physics, 1999-12, Vol.60 (6)
Hauptverfasser: Sakhaee, M., Zhu, S. J., Department of Physics, Vanderbilt University, Nashville, Tennessee 37235, Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831, Hamilton, J. H., Ramayya, A. V., Hwang, J. K., Zhang, X. Q., Yang, L. M., Zhu, L. Y., Gan, C. Y., Jones, E. F.
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Sprache:eng
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Zusammenfassung:High-spin structures in the neutron-rich nuclei {sup 145}Ce and {sup 147}Ce produced in the spontaneous fission of {sup 252}Cf have been investigated by prompt {gamma}-ray spectroscopy. A collective band structure in {sup 145}Ce is identified. Several sidebands along with the new high-spin states in {sup 147}Ce are also identified. Particle-plus-rotor model calculations indicate that the yrast bands in {sup 145}Ce and {sup 147}Ce most probably originate from coupling of the {nu}i{sub 13/2} orbital to the ground states of {sup 144}Ce and {sup 146}Ce. The ground state configurations of {sup 145,147}Ce are ({nu}h{sub 9/2}+{nu}f{sub 7/2}) and {nu}h{sub 9/2}, respectively. (c) 1999 The American Physical Society.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.60.067303