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001-es BibID:	BIBFORM065175
035-os BibID:	(Scopus)84959506962 (WoS)000370799800005 (cikkazonosító)024320
Első szerző:	Shiga, Yoshiaki
Cím:	Investigating nuclear shell structure in the vicinity of 78Ni: Low-lying excited states in the neutron-rich isotopes 80,82Zn / Y. Shiga, K. Yoneda, D. Steppenbeck, N. Aoi, P. Doornenbal, J. Lee, H. Liu, M. Matsushita, S. Takeuchi, H. Wang, H. Baba, P. Bednarczyk, Zs. Dombradi, Zs. Fulop, S. Go, T. Hashimoto, M. Honma, E. Ideguchi, K. Ieki, K. Kobayashi, Y. Kondo, R. Minakata, T. Motobayashi, D. Nishimura, T. Otsuka, H. Otsu, H. Sakurai, N. Shimizu, D. Sohler, Y. Sun, A. Tamii, R. Tanaka, Z. Tian, Y. Tsunoda, Zs. Vajta, T. Yamamoto, X. Yang, Z. Yang, Y. Ye, R. Yokoyama, J. Zenihiro
Dátum:	2016
ISSN:	2469-9985 0556-2813 2469-9993
Megjegyzések:	The low-lying level structures of nuclei in the vicinity of 78Ni were investigated using in-beam ?-ray spectroscopy to clarify the nature of the nuclear magic numbers Z=28 and N=50 in systems close to the neutron drip line. Nucleon knockout reactions were employed to populate excited states in 80Zn and 82Zn. A candidate for the 4+1 level in 80Zn was identified at 1979(30) keV, and the lifetime of this state was estimated to be 136+92?67 ps from a line-shape analysis. Moreover, the energy of the 2+1 state in 82Zn is reported to lie at 621(11) keV. The large drop in the 2+1 energy at 82Zn indicates the presence of a significant peak in the E(2+1) systematics at N=50. Furthermore, the E(4+1)/E(2+1) and B(E2;4+1?2+1)/B(E2;2+1?0+g.s.) ratios in 80Zn were deduced to be 1.32(3) and 1.12+80?60, respectively. These results imply that 80Zn can be described in terms of two-proton configurations with a 78Ni core and are consistent with a robust N=50 magic number along the Zn isotopic chain. These observations, therefore, indicate a persistent N=50 shell closure in nuclei far from the line of ? stability, which in turn suggests a doubly magic structure for 78Ni.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Physical Review C. - 93 : 2 (2016), p. 1-6. -
További szerzők:	Yoneda, K. Steppenbeck, David Aoi, Nori Doornenbal, Pieter Lee, J. Liu, H. Matsushita, Masafumi Takeuchi, Satoshi Wang, H. Baba, H. Bednarczyk, Piotr Dombrádi Zsolt Fülöp Zs. Go, Shintaro Hashimoto, Takashi Honma, M. Ideguchi, Eiji Ieki, Kazuo Kobayashi, K. Kondo, Yosuke Minakata, Ryogo Motobayashi, Tohru Nishimura, Daiki Otsuka, T. Otsu, Hideaki Sakurai, H. Shimizu, N. Sohler Dóra Sun, Y. Tamii, Atsushi Tanaka, Ryuki Tian, Z. Tsunoda, Y. Vajta Zsolt (1985-) (informatikus fizikus) Yamamoto, Tetsuya Yang, X. Yang, Z. Ye, Y. Yokoyama, Rin Zenihiro, Juzo
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