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Search for spin-orbit-force reduction at 106,108Zr around r-process path

Sumikama, T, Yoshinaga, K, Watanabe, H, Nishimura, S, Miyashita, Y, Yamaguchi, K, Sugimoto, K, Chiba, J, Li, Z, Baba, H, Berryman, JS, Blasi, N, Bracco, A, Camera, F, Doornenbal, P, Go, S, Hashimoto, T, Hayakawa, S, Hinke, C, Ideguchi, E, Isobe, T, Ito, Y, Jenkins, DG, Kawada, Y, Kobayashi, N, Kondo, Y, Krücken, R, Kubono, S, Lorusso, G, Nakano, T, Kurata-Nishimura, M, Odahara, A, Ong, HJ, Ota, S, Podolyák, Z, Sakurai, H, Scheit, H, Steiger, K, Steppenbeck, D, Takano, S, Takashima, A, Tajiri, K, Teranishi, T, Wakabayashi, Y, Walker, PM, Wieland, O and Yamaguchi, H (2012) Search for spin-orbit-force reduction at 106,108Zr around r-process path AIP Conference Proceedings, 1484. pp. 156-160.

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Abstract

Shell gap at the magic number N = 82 is important to reproduce the 2nd peak of r-process abundance. If a spin-orbit force is reduced in a very neutron-rich region, a shell quenching at N = 82 and a new shell closure at N = 70 are predicted. A shell evolution by the spin-orbit-force reduction can be searched for through the shape evolution of Zr isotopes around an expected double magic nuclei, 110Zr(Z=40,N=70). We performed β-γ and isomer spectroscopy at RIBF to observe low-lying states in 106,108Zr. The present results indicate a well deformed shape for 106,108Zr. The drastic reduction of the spin-orbit force most likely does not occur around 110Zr on an r-process path. © 2012 American Institute of Physics.

Item Type: Article
Authors :
NameEmailORCID
Sumikama, TUNSPECIFIEDUNSPECIFIED
Yoshinaga, KUNSPECIFIEDUNSPECIFIED
Watanabe, HUNSPECIFIEDUNSPECIFIED
Nishimura, SUNSPECIFIEDUNSPECIFIED
Miyashita, YUNSPECIFIEDUNSPECIFIED
Yamaguchi, KUNSPECIFIEDUNSPECIFIED
Sugimoto, KUNSPECIFIEDUNSPECIFIED
Chiba, JUNSPECIFIEDUNSPECIFIED
Li, ZUNSPECIFIEDUNSPECIFIED
Baba, HUNSPECIFIEDUNSPECIFIED
Berryman, JSUNSPECIFIEDUNSPECIFIED
Blasi, NUNSPECIFIEDUNSPECIFIED
Bracco, AUNSPECIFIEDUNSPECIFIED
Camera, FUNSPECIFIEDUNSPECIFIED
Doornenbal, PUNSPECIFIEDUNSPECIFIED
Go, SUNSPECIFIEDUNSPECIFIED
Hashimoto, TUNSPECIFIEDUNSPECIFIED
Hayakawa, SUNSPECIFIEDUNSPECIFIED
Hinke, CUNSPECIFIEDUNSPECIFIED
Ideguchi, EUNSPECIFIEDUNSPECIFIED
Isobe, TUNSPECIFIEDUNSPECIFIED
Ito, YUNSPECIFIEDUNSPECIFIED
Jenkins, DGUNSPECIFIEDUNSPECIFIED
Kawada, YUNSPECIFIEDUNSPECIFIED
Kobayashi, NUNSPECIFIEDUNSPECIFIED
Kondo, YUNSPECIFIEDUNSPECIFIED
Krücken, RUNSPECIFIEDUNSPECIFIED
Kubono, SUNSPECIFIEDUNSPECIFIED
Lorusso, GUNSPECIFIEDUNSPECIFIED
Nakano, TUNSPECIFIEDUNSPECIFIED
Kurata-Nishimura, MUNSPECIFIEDUNSPECIFIED
Odahara, AUNSPECIFIEDUNSPECIFIED
Ong, HJUNSPECIFIEDUNSPECIFIED
Ota, SUNSPECIFIEDUNSPECIFIED
Podolyák, ZUNSPECIFIEDUNSPECIFIED
Sakurai, HUNSPECIFIEDUNSPECIFIED
Scheit, HUNSPECIFIEDUNSPECIFIED
Steiger, KUNSPECIFIEDUNSPECIFIED
Steppenbeck, DUNSPECIFIEDUNSPECIFIED
Takano, SUNSPECIFIEDUNSPECIFIED
Takashima, AUNSPECIFIEDUNSPECIFIED
Tajiri, KUNSPECIFIEDUNSPECIFIED
Teranishi, TUNSPECIFIEDUNSPECIFIED
Wakabayashi, YUNSPECIFIEDUNSPECIFIED
Walker, PMp.walker@surrey.ac.ukUNSPECIFIED
Wieland, OUNSPECIFIEDUNSPECIFIED
Yamaguchi, HUNSPECIFIEDUNSPECIFIED
Date : 1 December 2012
Identification Number : https://doi.org/10.1063/1.4763389
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:46
Last Modified : 17 May 2017 15:05
URI: http://epubs.surrey.ac.uk/id/eprint/836659

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