Isomeric 0+ state in 12Be

S. Shimoura, A. Saito, T. Minemura, Y. U. Matsuyama, H. Baba, H. Akiyoshi, N. Aoi, T. Gomi, Y. Higurashi, K. Ieki, N. Imai, N. Iwasa, H. Iwasaki, S. Kanno, S. Kubono, M. Kunibu, S. Michimasa, T. Motobayashi, T. Nakamura, H. SakuraiM. Serata, E. Takeshita, S. Takeuchi, T. Teranishi, K. Ue, K. Yamada, Y. Yanagisawa, M. Ishihara, N. Itagaki

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Abstract

An isomeric 0+ state in 12Be was found at Ex = 2.24 MeV. The isomer was identified by measuring coincident two γ-rays from in-flight 12Be nuclei, 12mBe → 12Be* (21+) → 12Beg.s., produced by the projectile fragmentation of 18O at 100 A MeV on a beryllium target. Its spin was determined to be 0+ by the angular correlation of the two γ-rays. The low excitation energy of the 0+ state is a strong evidence of the break of the N = 8 shell closure in the 12Be nucleus.

Original languageEnglish
Pages (from-to)31-36
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume560
Issue number1-2
DOIs
Publication statusPublished - May 8 2003

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rays
nuclei
beryllium
angular correlation
closures
projectiles
fragmentation
isomers
flight
excitation
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Shimoura, S., Saito, A., Minemura, T., Matsuyama, Y. U., Baba, H., Akiyoshi, H., ... Itagaki, N. (2003). Isomeric 0+ state in 12Be. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 560(1-2), 31-36. https://doi.org/10.1016/S0370-2693(03)00341-1

Isomeric 0+ state in 12Be. / Shimoura, S.; Saito, A.; Minemura, T.; Matsuyama, Y. U.; Baba, H.; Akiyoshi, H.; Aoi, N.; Gomi, T.; Higurashi, Y.; Ieki, K.; Imai, N.; Iwasa, N.; Iwasaki, H.; Kanno, S.; Kubono, S.; Kunibu, M.; Michimasa, S.; Motobayashi, T.; Nakamura, T.; Sakurai, H.; Serata, M.; Takeshita, E.; Takeuchi, S.; Teranishi, T.; Ue, K.; Yamada, K.; Yanagisawa, Y.; Ishihara, M.; Itagaki, N.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 560, No. 1-2, 08.05.2003, p. 31-36.

Research output: Contribution to journalArticle

Shimoura, S, Saito, A, Minemura, T, Matsuyama, YU, Baba, H, Akiyoshi, H, Aoi, N, Gomi, T, Higurashi, Y, Ieki, K, Imai, N, Iwasa, N, Iwasaki, H, Kanno, S, Kubono, S, Kunibu, M, Michimasa, S, Motobayashi, T, Nakamura, T, Sakurai, H, Serata, M, Takeshita, E, Takeuchi, S, Teranishi, T, Ue, K, Yamada, K, Yanagisawa, Y, Ishihara, M & Itagaki, N 2003, 'Isomeric 0+ state in 12Be', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 560, no. 1-2, pp. 31-36. https://doi.org/10.1016/S0370-2693(03)00341-1
Shimoura S, Saito A, Minemura T, Matsuyama YU, Baba H, Akiyoshi H et al. Isomeric 0+ state in 12Be. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2003 May 8;560(1-2):31-36. https://doi.org/10.1016/S0370-2693(03)00341-1
Shimoura, S. ; Saito, A. ; Minemura, T. ; Matsuyama, Y. U. ; Baba, H. ; Akiyoshi, H. ; Aoi, N. ; Gomi, T. ; Higurashi, Y. ; Ieki, K. ; Imai, N. ; Iwasa, N. ; Iwasaki, H. ; Kanno, S. ; Kubono, S. ; Kunibu, M. ; Michimasa, S. ; Motobayashi, T. ; Nakamura, T. ; Sakurai, H. ; Serata, M. ; Takeshita, E. ; Takeuchi, S. ; Teranishi, T. ; Ue, K. ; Yamada, K. ; Yanagisawa, Y. ; Ishihara, M. ; Itagaki, N. / Isomeric 0+ state in 12Be. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2003 ; Vol. 560, No. 1-2. pp. 31-36.
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AU - Shimoura, S.

AU - Saito, A.

AU - Minemura, T.

AU - Matsuyama, Y. U.

AU - Baba, H.

AU - Akiyoshi, H.

AU - Aoi, N.

AU - Gomi, T.

AU - Higurashi, Y.

AU - Ieki, K.

AU - Imai, N.

AU - Iwasa, N.

AU - Iwasaki, H.

AU - Kanno, S.

AU - Kubono, S.

AU - Kunibu, M.

AU - Michimasa, S.

AU - Motobayashi, T.

AU - Nakamura, T.

AU - Sakurai, H.

AU - Serata, M.

AU - Takeshita, E.

AU - Takeuchi, S.

AU - Teranishi, T.

AU - Ue, K.

AU - Yamada, K.

AU - Yanagisawa, Y.

AU - Ishihara, M.

AU - Itagaki, N.

PY - 2003/5/8

Y1 - 2003/5/8

N2 - An isomeric 0+ state in 12Be was found at Ex = 2.24 MeV. The isomer was identified by measuring coincident two γ-rays from in-flight 12Be nuclei, 12mBe → 12Be* (21+) → 12Beg.s., produced by the projectile fragmentation of 18O at 100 A MeV on a beryllium target. Its spin was determined to be 0+ by the angular correlation of the two γ-rays. The low excitation energy of the 0+ state is a strong evidence of the break of the N = 8 shell closure in the 12Be nucleus.

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