Experimental and theoretical neutron cross sections at 14 MeV

Abstract
Activation techniques have been used to measure the neutron cross sections for 27Al(n,p)27Mg, 58Ni(n,2n)57Ni, 93Nb(n,2n)92mNb, 93Nb(n, alpha )90mY and 197Au(n,2n)196mAu at a neutron energy of 14.2+or-0.1 MeV. The absolute cross sections were measured using the associated-particle technique to determine the neutron flux from the 3H(d,n)4He reaction and a Ge(Li) gamma-ray spectrometer to determine the activity of the neutron-irradiated samples. These experimental cross sections are compared with theoretical calculations based on the statistical model with corrections for pre-equilibrium and direct-reaction effects.