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Rotational excitation of the Hoyle state in 12C

AuthorsGarg, R.; Barton, C.; Aa Diget, C.; Courtin, S.; Fruet, G.; Fynbo, H. U.; Howard, A.; Illana, A. ; Jenkins, D. G.; Marroquín, I. ; Kirsebom, S.; Lund, M. V.; Moore, I.; Perea, Ángel ; Refsgaard, J.; Riley, J.E.; Rinta-Antila, S.; Sinclair, L.; Tengblad, Olof
Issue Date2018
PublisherInstitute of Physics Publishing
CitationJournal of Physics: Conference Series 940: 01204 (2018)
AbstractC-12 is synthesised in stars by fusion of three a particles. This process occurs through a resonance in the C-12 nucleus, famously known as the Hoyle state. In this state, the C-12 nucleus exists as a cluster of a particles. The state is the band-head for a rotational band with the 2(+) rotational excitation predicted in the energy region 9 - 11 MeV. This rotational excitation can affect the triple-alpha process reaction rate by more than an order of magnitude at high temperatures (10(9) K). Depending on the energy of the resonance, the knowledge of the state can also help determine the structure of the Hoyle state. In the work presented here, the state of interest is populated by beta decay of radioactive N-12 ion beam delivered by the IGISOL facility at JYFL, Jyvaskyla.
Description4 pags., 4 figs. -- Open Access funded by Creative Commons Atribution Licence 3.0
Publisher version (URL)https://doi.org/10.1088/1742-6596/940/1/012043
Identifiersdoi: 10.1088/1742-6596/940/1/012043
issn: 1742-6588
Appears in Collections:(CFMAC-IEM) Artículos
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