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Author  |
Pellumaj, J. et al; Perez-Vidal, R.M. |
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Title |
Investigating the collectivity of intruder states along N=49 isotones |
Type |
Journal Article |
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Year |
2025 |
Publication |
Nuclear Physics A |
Abbreviated Journal |
Nucl. Phys. A |
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Volume |
1060 |
Issue |
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Pages |
123125 - 6pp |
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Keywords |
Nuclear structure; Gamma-ray spectroscopy; Intruder states; N=50 shell closure; 83Se |
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Abstract |
Intruder states that originate from the promotion of neutrons across the N=50 shell gap are observed along the N=49 isotones (79Zn, 81Ge, 83Se, 85Kr), with the lowest energy in 83Se. The reduction of the N=50 shell gap towards Ni favors the lowering in the energy of these states. Moreover, since the Se nucleus (Z=34) is in the middle of the proton fp-shell (28 <= Z <= 40), it should have the maximum quadrupole correlations, lowering further the energy of these deformed configurations. This makes Se a good candidate for understanding the collectivity of the particle-hole intruder states in this region. Such information could also be used as a testing ground for theoretical models aiming to describe the region in the vicinity of 78Ni. An experiment aiming to measure the lifetime of the 540-keV 1/2+ and 1100-keV 3/2+ intruder states of 83Se was performed at LNL and is reported in this work. |
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Address |
[Pellumaj, J.] Univ Ferrara, Dipartimento Fis & Sci Terra, Ferrara, Italy, Email: julgen.pellumaj@lnl.infn.it |
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Publisher |
Elsevier |
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Language |
English |
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Original Title |
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Series Volume |
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Edition |
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ISSN |
0375-9474 |
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Notes |
WOS:001481655700001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6641 |
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