Magic nucleus Sn-132 and its one-neutron-hole neighbor Sn-131 - art. no. 062502

Bhattacharyya, P Daly, PJ Zhang, CT Grabowski, ZW Saha, SK Broda, R Fornal, B Ahmad, I Seweryniak, D Wiedenhover, I Carpenter, MP Janssens, RVF Khoo, TL Lauritsen, T Lister, CJ Reiter, P Blomqvist, J

P. Bhattacharyya et al., Magic nucleus Sn-132 and its one-neutron-hole neighbor Sn-131 - art. no. 062502, PHYS REV L, 8706(6), 2001, pp. 2502

11

INGLESE

Article

Physics

PHYSICAL REVIEW LETTERS

0031-9007 → ACNP

8706

6

2001

ISI

0031-9007(20010806)8706:6<2502:MNSAIO>2.0.ZU;2-I

Prompt and delayed gamma -ray cascades in doubly magic Sn-132 and its neigh bor Sn-131 have been studied at Gammasphere using a Cm-248 fission source. Isotopic assignments of unknown gamma rays were based on coincidences with known transitions in A = 112-116 Pd fission partners. The yrast level spect ra of both tin nuclei are interpreted using empirical nucleon-nucleon inter actions from the Sn-132 and Pb-208 regions. Results include identification of the (nuf(7/2) h(11/2)(-1))9(+) aligned state in Sn-132 and of extensive (nuf(7/2)h(11/2)(-2)) (nuf(7/2)d(3/2)(-1)h(11/2)(-1)) and (nuh(11/2)(-1) x 3(-)) multiplets in Sn-131. The previously reported beta (-) decay of an un usual In-131 high-spin isomer to levels in Sn-131 is also elucidated.