Bound excited states in 27F

Z. Elekes, Zs Dombrádi, A. Saito, N. Aoi, H. Baba, K. Demichi, Zs Fülöp, J. Gibelin, T. Gomi, H. Hasegawa, N. Imai, M. Ishihara, H. Iwasaki, S. Kanno, S. Kawai, T. Kishida, T. Kubo, K. Kurita, Y. Matsuyama, S. MichimasaT. Minemura, T. Motobayashi, M. Notani, T. K. Ohnishi, H. J. Ong, S. Ota, A. Ozawa, H. K. Sakai, H. Sakurai, S. Shimoura, E. Takeshita, S. Takeuchi, M. Tamaki, Y. Togano, K. Yamada, Y. Yanagisawa, K. Yoneda

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The 1H(27F,25,26,27F) reactions have been studied at 40 MeV/nucleon average energy using a liquid hydrogen target. For 25F, 26F and 27F nuclei, we have observed two γ-ray peaks each originating from the decay of two bound excited states. This is the first sign of the existence of bound excited states in 26,27F. The presence of a single bound excited state in 27F is a clear indication of a substantial change in the structure of the fluorine isotopes approaching the neutron dripline. The proposed second excited states in 25,26,27F nuclei have no counterparts in either the psd or the sdpf shell model calculations suggesting the appearance of nucler structure effects lying out of these model spaces.

Original languageEnglish
Subtitle of host publication12th International Symposium
Number of pages3
Publication statusPublished - Mar 13 2006
Event12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics - Notre Dame, IN, United States
Duration: Sep 4 2005Sep 9 2005

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics
CountryUnited States
CityNotre Dame, IN


  • F excited states
  • Proton scattering
  • Radioactive beam
  • γ-spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Elekes, Z., Dombrádi, Z., Saito, A., Aoi, N., Baba, H., Demichi, K., Fülöp, Z., Gibelin, J., Gomi, T., Hasegawa, H., Imai, N., Ishihara, M., Iwasaki, H., Kanno, S., Kawai, S., Kishida, T., Kubo, T., Kurita, K., Matsuyama, Y., ... Yoneda, K. (2006). Bound excited states in 27F. In CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: 12th International Symposium (pp. 383-385). (AIP Conference Proceedings; Vol. 819).