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	Author	Pellumaj, J. et al; Valiente-Dobon, J.J.; Perez-Vidal, R.M.
	Title	Development of deformed intruder structures along the N=50 magic number: Insights from 83Se			Type	Journal Article
	Year	2026	Publication	Physics Letters B	Abbreviated Journal	Phys. Lett. B
	Volume	876	Issue		Pages	140432 - 7pp
	Keywords	83Se; Intruder states; N=50 shell closure; Collectivity; Shape Coexistence
	Abstract	The 83Se nucleus was studied in the context of shape coexistence employing a 82Se(d,p)83Se reaction performed in inverse kinematics with the GALILEO-II + SPIDER setup to reach the desired selectivity on the reaction channel of interest via y-particle coincidences. The lifetimes of the 1/2+ 540-keV and 3/2+3 1100-keV low-lying intruder states of 83Se were measured for the first time by employing the Recoil Distance Doppler Shift and the Doppler Shift Attenuation Method. The deduced transition probabilities, together with the mixing ratios obtained from a separate neutron-capture experiment performed at ILL with the FIPPS array, are compared and discussed in the framework of shell-model calculations performed with the PFSDG-U Hamiltonian. Large transition probabilities of hundreds of e2fm4 were found for the E2 decays of the states built on top of the intruders, pointing to the development of quadrupole collectivity and large deformation in the proximity of N = 50 shell closure.
	Address	[Pellumaj, J.; Gottardo, A.; Goasduff, A.; Valiente-Dobon, J. J.; Brugnara, D.; De Angelis, G.; Gozzelino, A.; Marchi, T.; Napoli, D. R.; Perez-Vidal, R. M.; Zanon, I.; Loriggiola, M.] INFN Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, Italy, Email: julgen.pellumaj@lnl.infn.it
	Corporate Author				Thesis
	Publisher	Elsevier	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0370-2693	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:001754972700001			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	7214
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