학술논문
Observation of a γ-decaying millisecond isomeric state in 128Cd80
Document Type
article
Author
A. Jungclaus; H. Grawe; S. Nishimura; P. Doornenbal; G. Lorusso; G.S. Simpson; P.-A. Söderström; T. Sumikama; J. Taprogge; Z.Y. Xu; H. Baba; F. Browne; N. Fukuda; R. Gernhäuser; G. Gey; N. Inabe; T. Isobe; H.S. Jung; D. Kameda; G.D. Kim; Y.-K. Kim; I. Kojouharov; T. Kubo; N. Kurz; Y.K. Kwon; Z. Li; H. Sakurai; H. Schaffner; Y. Shimizu; K. Steiger; H. Suzuki; H. Takeda; Zs. Vajta; H. Watanabe; J. Wu; A. Yagi; K. Yoshinaga; G. Benzoni; S. Bönig; K.Y. Chae; L. Coraggio; J.-M. Daugas; F. Drouet; A. Gadea; A. Gargano; S. Ilieva; N. Itaco; F.G. Kondev; T. Kröll; G.J. Lane; A. Montaner-Pizá; K. Moschner; D. Mücher; F. Naqvi; M. Niikura; H. Nishibata; A. Odahara; R. Orlandi; Z. Patel; Zs. Podolyák; A. Wendt
Source
Physics Letters B, Vol 772, Iss C, Pp 483-488 (2017)
Subject
Language
English
ISSN
0370-2693
1873-2445
1873-2445
Abstract
A new high-spin isomer in the neutron-rich nucleus 128Cd was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T1/2=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15−). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus 129Cd. In the present experiment no evidence was found for the decay of a 18+ E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h11/2 and the 0g9/2 orbit, respectively, which is predicted to exist by the shell model.