@Article{Simpson+Montaner-Piza2014,
author="Simpson, G. S. et al
and Montaner-Piza, A.",
title="Yrast 6(+) Seniority Isomers of Sn-136,Sn-138",
journal="Physical Review Letters",
year="2014",
publisher="Amer Physical Soc",
volume="113",
number="13",
pages="132502--6pp",
abstract="Delayed gamma-ray cascades, originating from the decay of (6(+)) isomeric states, in the very neutron-rich, semimagic isotopes Sn-136,Sn-138 have been observed following the projectile fission of a U-238 beam at RIBF, RIKEN. The wave functions of these isomeric states are proposed to be predominantly a fully aligned pair of f(7/2) neutrons. Shell-model calculations, performed using a realistic effective interaction, reproduce well the energies of the excited states of these nuclei and the measured transition rates, with the exception of the B(E2; 6(+) -> 4(+)) rate of Sn-136, which deviates from a simple seniority scheme. Empirically reducing the nu f(7/2)(2) orbit matrix elements produces a 4(1)(+) state with almost equal seniority 2 and 4 components, correctly reproducing the experimental B(E2; 6(+) -> 4(+)) rate of Sn-136. These data provide a key benchmark for shell-model interactions far from stability.",
optnote="WOS:000342666500001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1957), last updated on Thu, 30 Oct 2014 10:34:44 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.113.132502",
opturl="https://doi.org/10.1103/PhysRevLett.113.132502",
language="English"
}