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Is seniority a partial dynamic symmetry in the first $$nu$$$$g_{9/2}$$ shell?

中性子$$nu$$$$g_{9/2}$$殻の始めにおいてセニョリティは部分的な力学的対称性となっているか?

Morales, A. I.*; Orlandi, R.; 他61名*

Morales, A. I.*; Orlandi, R.; 61 of others*

By studying the $$beta$$ decay of the radioactive nuclei $$^{72}$$Co and $$^{74}$$Co produced at RIBF, RIKEN, the low-lying excited states in $$^{72,74}$$Ni were studied for the first time up to spin 8$$^+$$. These states originate from the valence neutrons occupying the $$g_{9/2}$$ orbit, and permit to investigate the seniority quantum number. The data reveal that the seniority isomerism of the 8$$^+$$ state disappears, and this phenomenon is explained by comparison with shell model calculations and the influence of spherical doubly-magic $$^{78}$$Ni.

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パーセンタイル:12.26

分野:Astronomy & Astrophysics

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