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

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

doi:10.1063/1.4763389

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

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

Experimental Particle Physics

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

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.

Original language	English
Title of host publication	Origin of Matter and Evolution of Galaxies 2011
Pages	156-160
Number of pages	5
DOIs	https://doi.org/10.1063/1.4763389
Publication status	Published - 2012
Event	International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011 - Wako, Japan Duration: Nov 14 2011 → Nov 17 2011

Publication series

Name	AIP Conference Proceedings
Volume	1484
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011
Country/Territory	Japan
City	Wako
Period	11/14/11 → 11/17/11

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.4763389

Cite this

Sumikama, T., Yoshinaga, K., Watanabe, H., Nishimura, S., Miyashita, Y., Yamaguchi, K., Sugimoto, K., Chiba, J., Li, Z., Baba, H., Berryman, J. S., Blasi, N., Bracco, A., Camera, F., Doornenbal, P., Go, S., Hashimoto, T., Hayakawa, S., Hinke, C., ... Yamaguchi, H. (2012). Search for spin-orbit-force reduction at ^106,108Zr around r-process path. In Origin of Matter and Evolution of Galaxies 2011 (pp. 156-160). (AIP Conference Proceedings; Vol. 1484). https://doi.org/10.1063/1.4763389

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 & Yamaguchi, H 2012, Search for spin-orbit-force reduction at ^106,108Zr around r-process path. in Origin of Matter and Evolution of Galaxies 2011. AIP Conference Proceedings, vol. 1484, pp. 156-160, International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011, Wako, Japan, 11/14/11. https://doi.org/10.1063/1.4763389

@inproceedings{9618e74757c84748a6f342209a4510bc,

title = "Search for spin-orbit-force reduction at 106,108Zr 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, 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.",

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

year = "2012",

doi = "10.1063/1.4763389",

language = "English",

isbn = "9780735410961",

series = "AIP Conference Proceedings",

pages = "156--160",

booktitle = "Origin of Matter and Evolution of Galaxies 2011",

note = "International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011 ; Conference date: 14-11-2011 Through 17-11-2011",

}

TY - GEN

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

AU - Sumikama, T.

AU - Yoshinaga, K.

AU - Watanabe, H.

AU - Nishimura, S.

AU - Miyashita, Y.

AU - Yamaguchi, K.

AU - Sugimoto, K.

AU - Chiba, J.

AU - Li, Z.

AU - Baba, H.

AU - Berryman, J. S.

AU - Blasi, N.

AU - Bracco, A.

AU - Camera, F.

AU - Doornenbal, P.

AU - Go, S.

AU - Hashimoto, T.

AU - Hayakawa, S.

AU - Hinke, C.

AU - Ideguchi, E.

AU - Isobe, T.

AU - Ito, Y.

AU - Jenkins, D. G.

AU - Kawada, Y.

AU - Kobayashi, N.

AU - Kondo, Y.

AU - Krücken, R.

AU - Kubono, S.

AU - Lorusso, G.

AU - Nakano, T.

AU - Kurata-Nishimura, M.

AU - Odahara, A.

AU - Ong, H. J.

AU - Ota, S.

AU - Podolyák, Zs

AU - Sakurai, H.

AU - Scheit, H.

AU - Steiger, K.

AU - Steppenbeck, D.

AU - Takano, S.

AU - Takashima, A.

AU - Tajiri, K.

AU - Teranishi, T.

AU - Wakabayashi, Y.

AU - Walker, P. M.

AU - Wieland, O.

AU - Yamaguchi, H.

PY - 2012

Y1 - 2012

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, 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.

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, 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.

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

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

U2 - 10.1063/1.4763389

DO - 10.1063/1.4763389

M3 - Conference contribution

AN - SCOPUS:84874529994

SN - 9780735410961

T3 - AIP Conference Proceedings

SP - 156

EP - 160

BT - Origin of Matter and Evolution of Galaxies 2011

T2 - International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011

Y2 - 14 November 2011 through 17 November 2011

ER -