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

T. Sumikama; K. Yoshinaga; Y. Miyashita; K. Sugimoto; J. Chiba; S. Takano; H. Watanabe; S. Nishimura; Z. Li; H. Baba; P. Doornenbal; T. Isobe; G. Lorusso; T. Nakano; M. Kurata-Nishimura; H. Sakurai; D. Steppenbeck; K. Yamaguchi; Y. Ito; A. Odahara; A. Takashima; K. Tajiri; J.S. Berryman; N. Blasi; A. Bracco; F. Camera; O. Wieland; S. Go; S. Hayakawa; E. Ideguchi; S. Kubono; S. Ota; H. Yamaguchi; T. Hashimoto; H.J. Ong; C. Hinke; K. Steiger; D.G. Jenkins; Y. Kawada; N. Kobayashi; Y. Kondo; R. Krücken; Zs. Podolyák; P.M. Walker; H. Scheit; T. Teranishi; Y. Wakabayashi

doi:10.1063/1.4763389

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

T. Sumikama, K. Yoshinaga, Y. Miyashita, K. Sugimoto, J. Chiba, S. Takano, H. Watanabe, S. Nishimura, Z. Li, H. Baba, P. Doornenbal, T. Isobe, G. Lorusso, T. Nakano, M. Kurata-Nishimura, H. Sakurai, D. Steppenbeck, K. Yamaguchi, Y. Ito, A. OdaharaA. Takashima, K. Tajiri, J.S. Berryman, N. Blasi, A. Bracco, F. Camera, O. Wieland, S. Go, S. Hayakawa, E. Ideguchi, S. Kubono, S. Ota, H. Yamaguchi, T. Hashimoto, H.J. Ong, C. Hinke, K. Steiger, D.G. Jenkins, Y. Kawada, N. Kobayashi, Y. Kondo, R. Krücken, Zs. Podolyák, P.M. Walker, H. Scheit, T. Teranishi, Y. Wakabayashi

Physics

Research output: Chapter in Book/Report/Conference proceeding › Chapter

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, Zr(Z=40,N=70). We performed β-γ and isomer spectroscopy at RIBF to observe low-lying states in Zr. The present results indicate a well deformed shape for Zr. The drastic reduction of the spin-orbit force most likely does not occur around Zr on an r-process path.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	156-160
Volume	1484
DOIs	https://doi.org/10.1063/1.4763389
Publication status	Published - 1 Jan 2012
Event	AIP Conference Proceedings 2011 - Wako, Japan Duration: 14 Nov 2011 → 17 Nov 2011

Conference

Conference	AIP Conference Proceedings 2011
Country/Territory	Japan
City	Wako
Period	14/11/11 → 17/11/11

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10.1063/1.4763389

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Sumikama, T., Yoshinaga, K., Miyashita, Y., Sugimoto, K., Chiba, J., Takano, S., Watanabe, H., Nishimura, S., Li, Z., Baba, H., Doornenbal, P., Isobe, T., Lorusso, G., Nakano, T., Kurata-Nishimura, M., Sakurai, H., Steppenbeck, D., Yamaguchi, K., Ito, Y., ... Wakabayashi, Y. (2012). Search for spin-orbit-force reduction at 106,108 Zr around r-process path. In AIP Conference Proceedings (Vol. 1484, pp. 156-160) https://doi.org/10.1063/1.4763389

@inbook{e4c0162baf754346a08d5b3dab1e0780,

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

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, Zr(Z=40,N=70). We performed β-γ and isomer spectroscopy at RIBF to observe low-lying states in Zr. The present results indicate a well deformed shape for Zr. The drastic reduction of the spin-orbit force most likely does not occur around Zr on an r-process path.",

author = "T. Sumikama and K. Yoshinaga and Y. Miyashita and K. Sugimoto and J. Chiba and S. Takano and H. Watanabe and S. Nishimura and Z. Li and H. Baba and P. Doornenbal and T. Isobe and G. Lorusso and T. Nakano and M. Kurata-Nishimura and H. Sakurai and D. Steppenbeck and K. Yamaguchi and Y. Ito and A. Odahara and A. Takashima and K. Tajiri and J.S. Berryman and N. Blasi and A. Bracco and F. Camera and O. Wieland and S. Go and S. Hayakawa and E. Ideguchi and S. Kubono and S. Ota and H. Yamaguchi and T. Hashimoto and H.J. Ong and C. Hinke and K. Steiger and D.G. Jenkins and Y. Kawada and N. Kobayashi and Y. Kondo and R. Kr{\"u}cken and Zs. Podoly{\'a}k and P.M. Walker and H. Scheit and T. Teranishi and Y. Wakabayashi",

year = "2012",

month = jan,

day = "1",

doi = "10.1063/1.4763389",

language = "English",

isbn = "9780735410961",

volume = "1484",

pages = "156--160",

booktitle = "AIP Conference Proceedings",

note = "AIP Conference Proceedings 2011 ; Conference date: 14-11-2011 Through 17-11-2011",

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Sumikama, T, Yoshinaga, K, Miyashita, Y, Sugimoto, K, Chiba, J, Takano, S, Watanabe, H, Nishimura, S, Li, Z, Baba, H, Doornenbal, P, Isobe, T, Lorusso, G, Nakano, T, Kurata-Nishimura, M, Sakurai, H, Steppenbeck, D, Yamaguchi, K, Ito, Y, Odahara, A, Takashima, A, Tajiri, K, Berryman, JS, Blasi, N, Bracco, A, Camera, F, Wieland, O, Go, S, Hayakawa, S, Ideguchi, E, Kubono, S, Ota, S, Yamaguchi, H, Hashimoto, T, Ong, HJ, Hinke, C, Steiger, K, Jenkins, DG, Kawada, Y, Kobayashi, N, Kondo, Y, Krücken, R, Podolyák, Z, Walker, PM, Scheit, H, Teranishi, T & Wakabayashi, Y 2012, Search for spin-orbit-force reduction at 106,108 Zr around r-process path. in AIP Conference Proceedings. vol. 1484, pp. 156-160, AIP Conference Proceedings 2011, Wako, Japan, 14/11/11. https://doi.org/10.1063/1.4763389

TY - CHAP

T1 - Search for spin-orbit-force reduction at 106,108 Zr around r-process path

AU - Sumikama, T.

AU - Yoshinaga, K.

AU - Miyashita, Y.

AU - Sugimoto, K.

AU - Chiba, J.

AU - Takano, S.

AU - Watanabe, H.

AU - Nishimura, S.

AU - Li, Z.

AU - Baba, H.

AU - Doornenbal, P.

AU - Isobe, T.

AU - Lorusso, G.

AU - Nakano, T.

AU - Kurata-Nishimura, M.

AU - Sakurai, H.

AU - Steppenbeck, D.

AU - Yamaguchi, K.

AU - Ito, Y.

AU - Odahara, A.

AU - Takashima, A.

AU - Tajiri, K.

AU - Berryman, J.S.

AU - Blasi, N.

AU - Bracco, A.

AU - Camera, F.

AU - Wieland, O.

AU - Go, S.

AU - Hayakawa, S.

AU - Ideguchi, E.

AU - Kubono, S.

AU - Ota, S.

AU - Yamaguchi, H.

AU - Hashimoto, T.

AU - Ong, H.J.

AU - Hinke, C.

AU - Steiger, K.

AU - Jenkins, D.G.

AU - Kawada, Y.

AU - Kobayashi, N.

AU - Kondo, Y.

AU - Krücken, R.

AU - Podolyák, Zs.

AU - Walker, P.M.

AU - Scheit, H.

AU - Teranishi, T.

AU - Wakabayashi, Y.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - 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, Zr(Z=40,N=70). We performed β-γ and isomer spectroscopy at RIBF to observe low-lying states in Zr. The present results indicate a well deformed shape for Zr. The drastic reduction of the spin-orbit force most likely does not occur around Zr on an r-process path.

AB - 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, Zr(Z=40,N=70). We performed β-γ and isomer spectroscopy at RIBF to observe low-lying states in Zr. The present results indicate a well deformed shape for Zr. The drastic reduction of the spin-orbit force most likely does not occur around Zr on an r-process path.

UR - http://www.scopus.com/inward/record.url?scp=84874529994&partnerID=8YFLogxK

U2 - 10.1063/1.4763389

DO - 10.1063/1.4763389

M3 - Chapter

AN - SCOPUS:84874529994

SN - 9780735410961

VL - 1484

SP - 156

EP - 160

BT - AIP Conference Proceedings

T2 - AIP Conference Proceedings 2011

Y2 - 14 November 2011 through 17 November 2011

ER -

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

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