Identification of levels in {sup 159}Sm and high spin states in {sup 89,91}Kr
Journal Article
·
· Physical Review. C, Nuclear Physics
- Physics Department, Vanderbilt University, Nashville, Tennessee 37235 (United States)
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
The high spin excited states of neutron-rich nuclei {sup 159}Sm and {sup 89,91}Kr are identified for the first time from the spontaneous fission of {sup 252}Cf. Six excited states and six {gamma} transitions in {sup 159}Sm are reported here for the first time. Five and two new {gamma} transitions are identified in {sup 89}Kr and {sup 91}Kr, respectively. Level schemes in {sup 89,91}Kr are interpreted as the 2d{sub 5/2} neutron hole configuration weakly coupled to the neighboring even-even Kr nuclei. A possible yrast spin sequence of 11/2{sup -}-9/2{sup +}-5/2{sup +} is suggested in {sup 89}Kr. A rotational band with the proposed configuration of {nu}5/2[523] is observed in {sup 159}Sm.
- OSTI ID:
- 21192076
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 78, Issue 1; Other Information: DOI: 10.1103/PhysRevC.78.017303; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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