Candidate for the 2+ excited Hoyle state at Ex∼10 MeV in 12C

M. Itoh, H. Akimune, M. Fujiwara, U. Garg, N. Hashimoto, T. Kawabata, K. Kawase, S. Kishi, T. Murakami, K. Nakanishi, Y. Nakatsugawa, B. K. Nayak, S. Okumura, H. Sakaguchi, H. Takeda, S. Terashima, M. Uchida, Y. Yasuda, M. Yosoi, J. Zenihiro

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195 Citations (Scopus)


Inelastic scattering from 12C has been measured at extremely forward angles including 0 using 386 MeV α particles to study the α-cluster states around Ex ∼ 10 MeV, especially the 2 + state predicted by the α-cluster model. We have analyzed (α,α) cross-section data using both peak-fitting and multipole decomposition techniques. A 2+ state at Ex= 9.84 ± 0.06 MeV with a width of 1.01 ± 0.15 MeV is found to be submerged in the broad 0+ state at Ex= 9.93 ± 0.03 MeV with a width of 2.71 ± 0.08 MeV. This 2+ state may be interpreted as the 2+ excitation of the Hoyle state and the α-condensate state.

Original languageEnglish
Article number054308
JournalPhysical Review C - Nuclear Physics
Issue number5
Publication statusPublished - 2011 Nov 14


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