β-spectroscopy of 11Li and 14Be - With a β-n-γ triple coincidence method

N. Aoi, K. Yoneda, H. Miyatake, H. Ogawa, Y. Yamamoto, E. Ideguchi, T. Kishida, T. Nakamura, M. Notani, H. Sakurai, T. Teranishi, H. Wu, S. S. Yamamoto, Y. Watanabe, A. Yoshida, M. Ishihara

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Abstract

Experimental studies of β-decay measurements of the neutron drip line nuclei 11Li and 14Be are presented. β-decay schemes of these nuclei are determined by measuring β-rays, delayed neutrons and γ-rays in triple coincidence. The decay schemes of both 11Li and 14Be associated with single neutron emission are unambiguously determined. New levels in their daughter nuclei, 11Be and 14B, are found. In addition, the deduced level scheme of 14B indicates the lowering of 2s1/2 single neutron orbital with respect to 1p1/2 orbital in the N=9 isotones. Such behavior is known to exist in N=7.

Original languageEnglish
Pages (from-to)181-188
Number of pages8
JournalNuclear Physics A
Volume616
Issue number1-2
Publication statusPublished - Apr 14 1997
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Aoi, N., Yoneda, K., Miyatake, H., Ogawa, H., Yamamoto, Y., Ideguchi, E., ... Ishihara, M. (1997). β-spectroscopy of 11Li and 14Be - With a β-n-γ triple coincidence method. Nuclear Physics A, 616(1-2), 181-188.