Article révisé par les pairs
Résumé : The α + α bremsstrahlung is studied in a microscopic cluster approach with the Generator Coordinate Method associated with the Microscopic R-matrix Method. Two effective nucleon-nucleon interactions are considered: the Minnesota potential and a potential derived from the realistic Argonne AV18 potential by the Unitary Correlation Operator Method. The influence of the nucleon-nucleon interactions are discussed and the results are compared with experimental data.