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Two-Quasiparticle Bands and Isomers in 98Sr |
LI Ming-Liang1;ZHU Sheng-Jiang1;J. H. Hamilton2;A. V. Ramayya2;J. K. Hwang2;CHE Xing-Lai1;ZHANG Zheng1;YU
Ying-Nan1;ZHENG Ran-Cheng1; I. Y. Lee3;J. O. Rasmussen3;Y. X. Luo2,3;W. C. Ma4 |
1Department of Physics, Tsinghua University, Beijing 100084
2Department of Physics, Vanderbilt University, Nashville, Tennessee 37235, USA
3Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
4Department of Physics, Mississippi State University, Mississippi 39762, USA |
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Cite this article: |
LI Ming-Liang, ZHU Sheng-Jiang, J. H. Hamilton et al 2004 Chin. Phys. Lett. 21 2147-2150 |
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Abstract Rotational bands in neutron-rich 98Sr nucleus have been investigated by measuring high-fold prompt λ-ray coincidence events of the spontaneous fission of 252Cf with the Gammasphere detector array. A deformed K=3 band built on the 1838 keV level has been confirmed and extended. Another deformed K=6 band based on the 2535keV level has been established. Both the bands originate most probably from the v 2/9[404] v2/3[411] two-quasiparticle configuration with Ω=|Ω1-Ω2|and Ω=|Ω1- Ω2|, respectively. Based on the delay-coincidence measurements, the half-lives for the K=3 and K=6 band head levels have been obtained to be 13±3 ns and 4.5± 1.0 ns, respectively.
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Keywords:
21.10.Re
21.60.Ev
27.60.+j
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Published: 01 November 2004
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