Role of the Hoyle state in the 12C+12C fusion at low energies
1 Physique Nucléaire Théorique et Physique Mathématique, C.P. 229, Université Libre de Bruxelles (ULB), B 1050 Brussels, Belgium
2 Instituto de Estudos Avançados da Universidade de São Paulo, Caixa Postal 72012, 05508-970, São Paulo, Brazil
3 Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, 09972-270, Campus Diadema, São Paulo, Brazil
Published online: 1 April 2014
The 12C+12C fusion reaction is investigated in a multichannel folding model, using the density-dependent DDM3Y nucleon-nucleon interaction. The 12C(01+, 2+, 02+, 3−) states are included, and their densities are taken from a microscopic cluster calculation. Absorption to fusion channels is simulated by a short-range imaginary potential and the model does not contain any fitting parameter. We compute elastic and fusion cross sections simultaneously. The role of 12C+12C inelastic channels and, in particular, of the 12C(01+)+12C(02+) channel involving the Hoyle state is important even at low energies.
© Owned by the authors, published by EDP Sciences, 2014
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