Abstract
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.
Highlights
For a long time, microscopic approaches have been used to describe nuclear collisions [1, 2]
Following the principle of the Microscopic R-matrix Method [13], the configuration space is divided in two regions at the channel radius a: an internal region (ρ < a) where the wave function is described by the Generator Coordinate Method [14, 2] and an external region (ρ > a) where the antisymmetrization between nuclei is neglected and the αα interaction is considered purely Coulombic
The wave functions are evaluated by solving the Schrodinger equation (2) on the internal region requiring the continuity of the wave function at the channel radius a
Summary
Microscopic approaches have been used to describe nuclear collisions [1, 2]. Microscopic descriptions of the α + α bremsstrahlung were previously performed [7, 8]. The scattering wave functions were obtained from a Schrodinger equation based on effective NN potentials: the Volkov [9] and Minnesota potentials [10].
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