Excited states in neutron rich boron isotopes

R. Kanungo, Z. Elekes, H. Baba, Zs Dombrádi, Zs Fülöp, J. Gibelin, Á Horváth, Y. Ichikawa, E. Ideguchi, N. Iwasa, H. Iwasaki, S. Kawai, Y. Kondo, T. Motobayashi, M. Notani, T. Ohnishi, A. Ozawa, H. Sakurai, S. Shimoura, E. TakeshitaS. Takeuchi, I. Tanihata, Y. Togano, C. Wu, Y. Yamaguchi, Y. Yanagisawa, A. Yoshida, K. Yoshida

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New experimental results on in-beam gamma spectroscopy of neutron rich boron isotopes are presented for 17B and its neutron removal fragments 14,15B, after scattering with a H2 target. A gamma transition for 17B is observed at 1089±15 keV. The fragment 15B is observed abundantly associated with a gamma transition of 1336±10 keV. This suggests for the first time a core-excited structure for 17B thereby providing a new insight into its structure. Observations for 12,14B are also presented. The data set provides a useful systematic study of first excited states of neutron rich boron isotopes showing the dramatic drop in excitation energy beyond N = 8.

Original languageEnglish
Pages (from-to)206-214
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - Feb 24 2005


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Kanungo, R., Elekes, Z., Baba, H., Dombrádi, Z., Fülöp, Z., Gibelin, J., Horváth, Á., Ichikawa, Y., Ideguchi, E., Iwasa, N., Iwasaki, H., Kawai, S., Kondo, Y., Motobayashi, T., Notani, M., Ohnishi, T., Ozawa, A., Sakurai, H., Shimoura, S., ... Yoshida, K. (2005). Excited states in neutron rich boron isotopes. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 608(3-4), 206-214. https://doi.org/10.1016/j.physletb.2005.01.022