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	Author	Luo, D.W. et al; Montaner-Piza, A.
	Title	Seniority Structure in Neutron-Rich Nucleus 128Ag: Evidence for Robustness of N=82 Shell Closure in Silver Isotopes			Type	Journal Article
	Year	2025	Publication	Physical Review Letters	Abbreviated Journal	Phys. Rev. Lett.
	Volume	134	Issue	23	Pages	232502 - 7pp
	Keywords
	Abstract	The spectroscopic studies of very neutron-rich nucleus 128Ag have been performed for the first time at the Radioactive Isotope Beam Factory of RIKEN. A new seniority isomer with a half-life of 1.60(7) μs has been identified and is proposed to have a spin-parity of 16-with a maximally aligned configuration comprising three proton holes in the g9/2 orbital and one neutron hole in the h11/2 orbital. The new level structure in 128Ag is quite well described by shell model calculations without invoking excitations across the Z = 50 and N = 82 shell gaps, and presents a good case of seniority scheme in odd-odd nuclei in the south vicinity of the double-magic nucleus 132Sn. With a classification of various components of the proton-neutron interaction, the inversion of lowest-lying 9-and 10-states between 128Ag and its neighboring isotone 130In is found to be dynamically ascribed to the seniority-nonconserving proton-neutron interaction components. The structure above 10-up to the 16-isomer in 128Ag shows remarkable similarities to seniority structures in the semimagic nuclei 128Pd and 130Cd. These spectroscopic features in 128Ag indicate that the N = 82 shell closure is still robust in silver isotopes.
	Address	[Luo, D. W.; Zhang, J. Z.; Li, Z. H.; Hua, H.; Chen, Z. Q.; Guo, C. Y.; Jiang, D. X.; Jin, Y.; Li, X. Q.; Lou, J. L.; Ni, L.; Wu, H. Y.; Wu, J.; Xu, C.; Ye, Y. L.; Zhang, S. Q.; Zhang, S. Y.; Zhou, Z. X.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China, Email: zhli@pku.edu.cn;
	Corporate Author				Thesis
	Publisher	Amer Physical Soc	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0031-9007	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:001513436600015			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	6723
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