Investigation of the Hoyle state in12C with a new hodoscope detector

• Published in: Journal of physics. Conference series Vol. 876; no. 1
• Main Authors: Dell'Aquila, D, Lombardo, I, Vigilante, M, De Luca, M, Acosta, L, Agodi, C, Cappuzzello, F, Carbone, D, Cavallaro, M, Cherubini, S, Cvetinovic, A, D'Agata, G, Francalanza, L, Guardo, G L, Gulino, M, Indelicato, I, La Cognata, M, Lamia, L, Ordine, A, Pizzone, R, Puglia, S, Rapisarda, G, Romano, S, Santagati, G, Spartà, R, Spitaleri, C, Tumino, A, Verde, G
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.07.2017
• Subjects: Clustering; Physics
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/876/1/012006

The 02+ state in12C (7.654MeV, the Hoyle state) is important for the understanding of clustering phenomena in nuclei. The pronounced cluster nature of this state allows the triple-α process in stars with a reaction rate regulated by its structure properties. To precisely estimate the direct component in the 3α decay mechanism of the Hoyle state, we developed a new experiment using the14N(d,α)12C reaction at 10.5MeV. An anti-coincidence telescope was used to identify the α ejectiles leading the residual12C in the Hoyle state, while its decays in 3α were studied by means of a new hodoscope of silicon detectors, superOSCAR, placed in kinematical coincidence to fully reconstruct the events. Details of the experiment and preliminary results are discussed in the text.