Rotational band in 12C based on the Hoyle state
1 NRC “Kurchatov Institute”, Moscow, Russia
2 Universidad Autonoma del Estado de Mexico, Mexico
3 Lomonosov State university, Moscow Russia,
4 JINR, Moscow region, Russia
5 JYFL, Jyvaskyla, Finland
6 Khlopin Radium Institute, St.-Petersburg, Russia
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Published online: 20 March 2014
α + 12C inelastic differential cross-sections were measured at the energies 65 and 110 MeV. A new broad state at 13.75 MeV was observed. Its spin-parity has been determined as 4+ and the diffraction radius of the corresponding L = 4 transition is ~ 0.8 fm larger than that of the excitation of the 4+, 14.8 MeV level. The 13.75 MeV state was considered to be the third member of the rotational band based on the Hoyle state.
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