Neutron capture cross sections of Ga-69 and Ga-71 at 25 keV and E-peak=90 keV

We measured the neutron capture cross sections of Ga-69 and Ga-71 for a quasi-stellar spectrum at k(B)T = 25 keV and a spectrum with a peak energy at 90 keV by the activation technique at the Joint Research Centre (JRC) in Geel, Belgium. Protons were provided by an electrostatic Van de Graaff accelerator to produce neutrons via the reaction Li-7(p,n). The produced activity was measured via the gamma emission of the product nuclei by high-purity germanium detectors. We present preliminary results.