Low-lying level structure of the neutron-rich nucleus 109Nb: A possible oblate-shape isomer
Low-lying level structure of the neutron-rich nucleus 109Nb: A possible oblate-shape isomer
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富中子核109Nb的低位能级结构:可能的扁圆异构体
DOI:
10.1016/j.physletb.2010.12.028
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发表时间:
2011
影响因子:
4.4
通讯作者:
H. Watanabe
中科院分区:
文献类型:
--
作者:
H. Watanabe
The neutron-rich nuclei109Nb and109Zr have been populated using in-flight fission of a238U beam at 345 MeV/nucleon at the RIBF facility. A T1/2=150(30) ns isomer at 313 keV has been identified in109Nb for the first time. The low-lying levels in109Nb have been also populated following the β-decay of109Zr. Based on the difference in feeding pattern between the isomeric and β decays, the decay scheme from the isomeric state in109Nb was established. The observed hindrances of the electromagnetic transitions deexciting the isomeric state are discussed in terms of possible shape coexistence. Potential energy surface calculations for single-proton configurations predict the presence of low-lying oblate-deformed states in109Nb.
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DOI:
10.1140/epja/i2004-10023-y
发表时间:
2004
期刊:
The European Physical Journal A - Hadrons and Nuclei
影响因子:
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影响因子:
4.4
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期刊:
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影响因子:
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