Investigation of thei13/2neutron orbital in theSn132region: New excited levels in

A. Korgul¹,

P. Bączyk²,

W. Urban

³

et al.

Detailed spectroscopy of doubly magic Sn132

“…The contribution of random coincidences to the time spectra in this range had to be carefully taken into account. Our analysis yields T 1/2 = 2.108 (14) μs for the 4848-keV level in agreement with the value of 2.080 (17) μs reported in the latest evaluation [3].…”

“…In particular, the neutron single-particle orbits above the N = 82 shell gap have been taken from low-lying states in 133 Sn: the ν f 7/2 ground state and the ν p 3/2 , ν p 1/2 , νh 9/2 , and ν f 5/2 states at 854-, 1367-, 1561-, and 2005-keV excitation energy [4,[11][12][13][14][15][16]. The νi 13/2 single-particle state has not been experimentally identified to date [17]. These single-particle states are not only relevant for 132 Sn but also for neutron-rich nuclei in its vicinity.…”

β decay of In133 : γ emission from neutron-unbound states in SnKorgul1, Fraile2, Benito3 et al. 2019Phys. Rev. CSelf Cite148312View full textAdd to dashboardCite

“…The knowledge about neutron s. p. states above N = 82 is almost complete. The only still unobserved s. p. state in this region, 13/2 + (νi 13/2 ), has been hypothesized to be neutron unbound in 133 Sn as it is expected at excitation energy about 2.5 MeV [33]. This state would be populated in the second-forbidden decay of the (9/2 + ) 133g In, making it a rather hindered transition; it is not observed in this study.…”

High- j neutron excitations outside Xe136

“…The shaded and hatched areas represent calculations based on the tensor interaction [9], anchored to estimates of the 0i 13/2 single-particle energy in 133 Sn, based on two different predictions. The shaded region is anchored to the gray circle at Z = 50, which is based on the average value of i 13/2 from Urban et al [38] and Korgul et al [39], 2.682 MeV. The location of the h 9/2 is taken as 1.561 MeV, the location of the observed 9/2 − 1 state [37].…”