@Article{Jungclaus_etal2024,
author="Jungclaus, A.
and Doornenbal, P.
and Acosta, J.
and Vaquero, V.
and Browne, F.
and Cortes, M. L.
and Gargano, A.
and Koiwai, T.
and Naidja, H.
and Taniuchi, R.
and Tostevin, J. A.
and Wimmer, K.
and Algora, A.
and Baba, H.
and Fernandez, A.
and Lalovic, N.
and Nacher, E.
and Rubio, B.
and Sakurai, H.",
title="Position of the single-particle 3/2- state in 135Sn and the N = 90 subshell closure",
journal="Physics Letters B",
year="2024",
publisher="Elsevier",
volume="851",
pages="138561--5pp",
abstract="The decay of excited states of the nucleus Sn-135, with three neutrons outside the doubly-magic Sn-132 core, was studied in an experiment performed at the Radioactive Isotope Beam Factory at RIKEN. Several gamma rays emitted from excited Sn-135 ions were observed following one-neutron and one-neutron-one-proton removal from Sn-136 and Sb-137 beams, respectively, on a beryllium target at relativistic energies. Based on the analogy to 133Sn populated via one-neutron removal from Sn-134, an excitation energy of 695(15) keV is assigned to the 3/2(-) state with strongest single-particle character in 135Sn. This result provides the first direct information about the evolution of the neutron shell structure beyond N = 82 and thus allows for a crucial test of shellmodel calculations in this region. The experimental findings are in full agreement with calculations performed employing microscopic effective two-body interactions derived from CD-Bonn and N3LO nucleon-nucleon potentials, which do not predict a pronounced subshell gap at neutron number N=90. The occurrence of such a gap in Sn-140, i.e., when the 1f(7/2) orbital is completely filled, had been proposed in the past, in analogy to the magicity of Ca-48, featuring a completely filled 0f(7/2) orbital one harmonic oscillator shell below.",
optnote="WOS:001208129000001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=6114), last updated on Mon, 06 May 2024 12:56:35 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2024.138561",
opturl="https://doi.org/10.1016/j.physletb.2024.138561",
language="English"
}