12C+12C fusion in a multichannel folding model. Issue 1 (January 2016)

• Record Type: Journal Article
• Authors: Assunção, M; Descouvemont, P
• Is Part Of: Journal of physics. Volume 665:Issue 1(2016)
• Publication Date: 2016-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/665/1/012010
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The 12 C+ 12 C fusion reaction is investigated using a folding potential in a multichannel approach involving the 12 C(0 + 1, 2 +, 0 + 2, 3 - ) states. The 12 C densities (including transition densities) are taken from the RGM calculation of Kamimura. For the nucleon-nucleon interaction, we use the DDM3Y density-dependent interaction. Owing to the explicit presence of inelastic channels, the imaginary part of the optical potential only contains a short-range fusion contribution. The S -factor is then virtually insensitive to the precise value, and the model is free of any fitting parameter. From the coupled-channel system, we determine the elastic and fusion cross sections simultaneously. As elastic data are available around the Coulomb barrier, this simultaneous treatment offers a good test for the reliability of the model. In the fusion cross section, the role of the inelastic channels and, in particular of the 12 C(0 + 1 )+ 12 C(0 + 2 ) channel involving the Hoyle state, is discussed.