Isomers in Pd128 and Pd126: Evidence for a Robust Shell Closure at the Neutron Magic Number 82 in Exotic Palladium Isotopes

Watanabe, Hiroshi; Lorusso, G; Nishimura, S; Xu, Z.Y.; Sumikama, T; Soderstrom, P.-A.; Doornenbal, P.; Browne, F; Gey, G; Jung, H. S.; Taprogge, J; Vajta, Zs.; Wu, J.; Yagi, A.; Baba, H.; Benzoni, G; Chae, K.Y.; Crespi, F.C.L.; Fukuda, N.; Gernhauser, R.; Inabe, N.; Isobe, T.; Jungclaus, A.; Kameda, D; Kim, G.D.; Kim, Y.K.; Kojouharov, I; Kondev, Filip G; Kubo, T; Kurz, N.; Kwon, Y.K.; Lane, Gregory; Li, Z.; Moon, C-B; Montaner-Piza, A.; Moschner, K.; Naqvi, F.; Niikura, M.; Nishibata, H.; Nishimura, D.; Odahara, A.; Orlandi, R.; Patel, Z.; Podolyak, Zs.; Sakurai, H.; Schaffner, H.; Simpson, G.S.; Steiger, K.; Suzuki, H.; Takeda, H.; Wendt, A.; Yoshinaga, K.

Isomers in Pd128 and Pd126: Evidence for a Robust Shell Closure at the Neutron Magic Number 82 in Exotic Palladium Isotopes

Date

2013

Authors

Watanabe, Hiroshi

Lorusso, G

Nishimura, S

Xu, Z.Y.

Sumikama, T

Soderstrom, P.-A.

Doornenbal, P.

Browne, F

Gey, G

Jung, H. S.

Publisher

American Physical Society

Abstract

The level structures of the very neutron-rich nuclei Pd128 and Pd126 have been investigated for the first time. In the r-process waiting-point nucleus Pd128, a new isomer with a half-life of 5.8(8) μs is proposed to have a spin and parity of 8+ and is as