First observation of rays emitted from excited states south-east of Sn; The g multiplet of In

Jungclaus, A.*; Gargano, A.*; Grawe, H.*; Taprogge, J.*; 西村 俊二*; Doornenbal, P.*; Lorusso, G.*; Shimizu, Y.*; Simpson, G. S.*; Sderstrm, P.-A.*; et al.

Physical Review C, 93(4), p.041301_1 - 041301_6, 2016/04

https://doi.org/10.1103/PhysRevC.93.041301

For the first time, the decay of excited states in a nucleus situated "south-east" of Sn have been observed, in a region where experimental information is limited to ground-state properties. Six rays from Cd, produced in the fragmentation of a U beam at RIBF at RIKEN. The rays were studied using the EURICA array of Ge detectors. The new experimental information is compared to results from realistic shell-model calculations, which are the first in this region far from stability. Comparison with calculations suggests that at least four out of six new transitions can be attributed to the particle-hole configuration of one neutron in the and one proton hole in the orbits, respectively. This work constitutes an important first step towards the exploration of nuclear structure in this unknown region of the nuclear chart.