DIRECT NEUTRON-CAPTURE FOR MAGIC-SHELL NUCLEI

In neutron capture for magic-shell nuclei the direct reaction mechanis m can be important and may even dominate. As an example we investigate d the reaction Ca-48(n, gamma)Ca-49 for projectile energies below 250 keV in a direct capture model using the folding procedure for optical and bound state potentials. The obtained theoretical cross sections ar e in agreement with the experimental data showing the dominance of the direct reaction mechanism in this case. The above method was also use d to calculate the cross section for Ca-50(n,gamma)Ca-51.