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

Research output: Contribution to journalArticlepeer-review

175 Citations (Scopus)

Abstract

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
Volume84
Issue number5
DOIs
Publication statusPublished - 2011 Nov 14

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Candidate for the 2<sup>+</sup> excited Hoyle state at E<sub>x</sub>∼10 MeV in <sup>12</sup>C'. Together they form a unique fingerprint.

Cite this