Bound excited states in 27F

Z. Elekes, Zs. S. Dombrádi, A. Saito, N. Aoi, H. Baba, K. Demichi, Zs. S. 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. Michimasa & 17 others T. Minemura, T. Motobayashi, M. Notani, T. 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: Contribution to journalArticle

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Abstract

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 nuclear structure effects lying out of these model spaces.

Original languageEnglish
Pages (from-to)17-22
Number of pages6
JournalPhysics Letters B
Volume599
Issue number1-2
DOIs
Publication statusPublished - Oct 7 2004

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fluorine isotopes
excitation
nuclei
liquid hydrogen
nuclear structure
rays
indication
neutrons
decay
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Elekes, Z., Dombrádi, Z. S., Saito, A., Aoi, N., Baba, H., Demichi, K., ... Yoneda, K. (2004). Bound excited states in 27F. Physics Letters B, 599(1-2), 17-22. https://doi.org/10.1016/j.physletb.2004.08.028

Bound excited states in 27F. / Elekes, Z.; Dombrádi, Zs. S.; Saito, A.; Aoi, N.; Baba, H.; Demichi, K.; Fülöp, Zs. S.; Gibelin, J.; Gomi, T.; Hasegawa, H.; Imai, N.; Ishihara, M.; Iwasaki, H.; Kanno, S.; Kawai, S.; Kishida, T.; Kubo, T.; Kurita, K.; Matsuyama, Y.; Michimasa, S.; Minemura, T.; Motobayashi, T.; Notani, M.; Ohnishi, T.; Ong, H. J.; Ota, S.; Ozawa, A.; Sakai, H. K.; Sakurai, H.; Shimoura, S.; Takeshita, E.; Takeuchi, S.; Tamaki, M.; Togano, Y.; Yamada, K.; Yanagisawa, Y.; Yoneda, K.

In: Physics Letters B, Vol. 599, No. 1-2, 07.10.2004, p. 17-22.

Research output: Contribution to journalArticle

Elekes, Z, Dombrádi, ZS, Saito, A, Aoi, N, Baba, H, Demichi, K, Fülöp, ZS, Gibelin, J, Gomi, T, Hasegawa, H, Imai, N, Ishihara, M, Iwasaki, H, Kanno, S, Kawai, S, Kishida, T, Kubo, T, Kurita, K, Matsuyama, Y, Michimasa, S, Minemura, T, Motobayashi, T, Notani, M, Ohnishi, T, Ong, HJ, Ota, S, Ozawa, A, Sakai, HK, Sakurai, H, Shimoura, S, Takeshita, E, Takeuchi, S, Tamaki, M, Togano, Y, Yamada, K, Yanagisawa, Y & Yoneda, K 2004, 'Bound excited states in 27F', Physics Letters B, vol. 599, no. 1-2, pp. 17-22. https://doi.org/10.1016/j.physletb.2004.08.028
Elekes, Z. ; Dombrádi, Zs. S. ; Saito, A. ; Aoi, N. ; Baba, H. ; Demichi, K. ; Fülöp, Zs. S. ; Gibelin, J. ; Gomi, T. ; Hasegawa, H. ; Imai, N. ; Ishihara, M. ; Iwasaki, H. ; Kanno, S. ; Kawai, S. ; Kishida, T. ; Kubo, T. ; Kurita, K. ; Matsuyama, Y. ; Michimasa, S. ; Minemura, T. ; Motobayashi, T. ; Notani, M. ; Ohnishi, T. ; Ong, H. J. ; Ota, S. ; Ozawa, A. ; Sakai, H. K. ; Sakurai, H. ; Shimoura, S. ; Takeshita, E. ; Takeuchi, S. ; Tamaki, M. ; Togano, Y. ; Yamada, K. ; Yanagisawa, Y. ; Yoneda, K. / Bound excited states in 27F. In: Physics Letters B. 2004 ; Vol. 599, No. 1-2. pp. 17-22.
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abstract = "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 nuclear structure effects lying out of these model spaces.",
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AU - Elekes, Z.

AU - Dombrádi, Zs. S.

AU - Saito, A.

AU - Aoi, N.

AU - Baba, H.

AU - Demichi, K.

AU - Fülöp, Zs. S.

AU - Gibelin, J.

AU - Gomi, T.

AU - Hasegawa, H.

AU - Imai, N.

AU - Ishihara, M.

AU - Iwasaki, H.

AU - Kanno, S.

AU - Kawai, S.

AU - Kishida, T.

AU - Kubo, T.

AU - Kurita, K.

AU - Matsuyama, Y.

AU - Michimasa, S.

AU - Minemura, T.

AU - Motobayashi, T.

AU - Notani, M.

AU - Ohnishi, T.

AU - Ong, H. J.

AU - Ota, S.

AU - Ozawa, A.

AU - Sakai, H. K.

AU - Sakurai, H.

AU - Shimoura, S.

AU - Takeshita, E.

AU - Takeuchi, S.

AU - Tamaki, M.

AU - Togano, Y.

AU - Yamada, K.

AU - Yanagisawa, Y.

AU - Yoneda, K.

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N2 - 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 nuclear structure effects lying out of these model spaces.

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