Microscopic calculation of the total photoabsorption cross section of A=6 nuclei

Sonia Bacca


The total photoabsorption cross section of 6He and 6Li is calculated considering the full final state interaction of the final A=6 system via the Lorentz Integral Transform method. Semi-realistic NN potential models are employed. Ground and Lorentz states are calculated applying the recently developed effective interaction method for the hyperspherical formalism. Because of its astrophysical interest the 6He + $\gamma$ reaction has been considered in cluster model approaches in the past. Compared to these results the maximum of the 6He cross section is shifted by about 5 MeV to higher energies similar as also found in a recent experiment.