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. Sakurai; M. Serata; E. Takeshita; S. Takeuchi; T. Teranishi; K. Ue; K. Yamada; Y. Yanagisawa; M. Ishihara; N. Itagaki

doi:10.1016/S0370-2693(03)00341-1

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

SCI - Physics

Research output: Contribution to journal › Article › peer-review

113 Citations (Scopus)

Abstract

An isomeric 0⁺ state in ¹²Be was found at E_x = 2.24 MeV. The isomer was identified by measuring coincident two γ-rays from in-flight ¹²Be nuclei, ^12mBe → ¹²Be* (2₁⁺) → ¹²Be_g.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 language	English
Pages (from-to)	31-36
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	560
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(03)00341-1
Publication status	Published - 2003 May 8

Keywords

Isomeric state
Radioactive beam experiment
γ-γ correlation

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/S0370-2693(03)00341-1

Cite this

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., ... 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

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

@article{d8d5180015c1421b9510be5301f22057,

title = "Isomeric 0+ state in 12Be",

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.",

keywords = "Isomeric state, Radioactive beam experiment, γ-γ correlation",

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

note = "Funding Information: We would like to thank the RIKEN Ring Cyclotron staff members for their operation during the experiment. We acknowledge valuable discussions on shell-model calculations with T. Otsuka. The present work was partially supported by the Grant-in-Aid for Scientific Research (No. 11440081) by the Ministry of Education, Culture, Sports, Science and Technology.",

year = "2003",

month = may,

day = "8",

doi = "10.1016/S0370-2693(03)00341-1",

language = "English",

volume = "560",

pages = "31--36",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Isomeric 0+ state in 12Be

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.

N1 - Funding Information: We would like to thank the RIKEN Ring Cyclotron staff members for their operation during the experiment. We acknowledge valuable discussions on shell-model calculations with T. Otsuka. The present work was partially supported by the Grant-in-Aid for Scientific Research (No. 11440081) by the Ministry of Education, Culture, Sports, Science and Technology.

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.

AB - 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.

KW - Isomeric state

KW - Radioactive beam experiment

KW - γ-γ correlation

UR - http://www.scopus.com/inward/record.url?scp=0038748359&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038748359&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(03)00341-1

DO - 10.1016/S0370-2693(03)00341-1

M3 - Article

AN - SCOPUS:0038748359

SN - 0370-2693

VL - 560

SP - 31

EP - 36

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -