First observation of gamma rays emitted from excited states south-east of Sn-132: The pi g(9/2)(-1) circle times nu f(7/2) multiplet of In-132(83)

Jungclaus, A; Gargano, A; Grawe, H; Taprogge, J; Nishimura, S; Doornenbal, P; Lorusso, G; Shimizu, Y; Simpson, GS; Soederstroem, P-A; Sumikama, T; Xu, ZY; Baba, H; Browne, F; Fukuda, N; Gernhaeuser, R; Gey, G; Inabe, N; Isobe, T; Jung, HS; Kameda, D; Kim, GD; Kim, Y-K; Kojouharov, I; Kubo, T; Kurz, N; Kwon, YK; Li, Z; Sakurai, H; Schaffner, H; Steiger, K; Suzuki, H; Takeda, H; Vajta, Zs; Watanabe, H; Wu, J; Yagi, A; Yoshinaga, K; Boenig, S; Coraggio, L; Daugas, J-M; Drouet, F; Gadea, A; Ilieva, S; Itaco, N; Kroell, T; Montaner-Piza, A; Moschner, K; Muecher, D; Nishibata, H; Odahara, A; Orlandi, Riccardo; Wendt, A

doi:10.1103/PhysRevC.93.041301

First observation of gamma rays emitted from excited states south-east of Sn-132: The pi g(9/2)(-1) circle times nu f(7/2) multiplet of In-132(83)

Author:

Jungclaus, A

Gargano, A ; Grawe, H ; Taprogge, J ; Nishimura, S ; Doornenbal, P ; Lorusso, G ; Shimizu, Y ; Simpson, GS ; Soederstroem, P-A ; Sumikama, T ; Xu, ZY ; Baba, H ; Browne, F ; Fukuda, N ; Gernhaeuser, R ; Gey, G ; Inabe, N ; Isobe, T ; Jung, HS ; Kameda, D ; Kim, GD ; Kim, Y-K ; Kojouharov, I ; Kubo, T ; Kurz, N ; Kwon, YK ; Li, Z ; Sakurai, H ; Schaffner, H ; Steiger, K ; Suzuki, H ; Takeda, H ; Vajta, Zs ; Watanabe, H ; Wu, J ; Yagi, A ; Yoshinaga, K ; Boenig, S ; Coraggio, L ; Daugas, J-M ; Drouet, F ; Gadea, A ; Ilieva, S ; Itaco, N ; Kroell, T ; Montaner-Piza, A ; Moschner, K ; Muecher, D ; Nishibata, H ; Odahara, A ; Orlandi, Riccardo ; Wendt, A

Keywords:

Science & Technology, Physical Sciences, Physics, Nuclear, Physics, NEUTRON, ISOTOPES, REGION, DECAY, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, 5106 Nuclear and plasma physics

Abstract:

For the first time, the γ decay of excited states has been observed in a nucleus situated in the quadrant south-east of doubly magic 132Sn, a region in which experimental information so far is limited to ground-state properties. Six γ rays with energies of 50, 86, 103, 227, 357, and 602 keV were observed following the β-delayed neutron emission from 133Cd85, populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN within the EURICA project. The new experimental information is compared to the results of a modern realistic shell-model calculation, the first one in this region very far from stability, focusing in particular on the π0g−19/2⊗ ν1f7/2 particle-hole multiplet in 132In83. In addition, theoretical estimates based on a scaling of the two-body matrix elements for the πh11/2⊗ νg9/2 analog multiplet in 208Tl127, one major proton and one major neutron shell above, are presented.