Recent Neutron Activation Cross Section Measurements

Recently cross sections have been measured with the activation technique for selected (n, xn), (n, xp) and (n, xα) reactions on isotopically enriched and natural samples of V, Cr, Co, Ni, Cu, Zn, Se, Zr, Mo, Tc, I, and Pb. Here results are presented for the measured cross sections of the 92Mo(n, p)92mNb, 95Mo(n, p)95mNb, natMo(n, xp)94Nb, 98Mo(n, np) 98mNb, 96Mo(n, np)95mNb, 96Mo(n, p)96Nb, 97Mo(n, p)97mNb, 97Mo(n, p) 97m+9Nb, 97Mo(n, np)96Nb, 98Mo(n, np)97mNb, 98Mo(n, np)97m+9Nb, 92Mo(n, 2n)91mMo, 94Mo(n, 2n)93mMo, 100Mo(n, 2n)99Mo, 92Mo(n, a)89mZr, 100Mo(n, a)97Zr, 208Pb(n, p)208Tl, 206Pb(n, a)203Hg, 206Pb(n, 3n)204mPb, 204Pb(n, n’)204mPb, 204Pb(n, 2n)20SPb, 204Pb(n, 2n)203mPb, 204Pb(n, 3n)202m lPb, 129I(n, 2n)128I, 58Ni(n, np)57Co, reactions and for the isomeric ratio of the 59Co(n, 2n)58m, gCo and S8Ni(n, p)58m, 9Ni reactions. Cross section measurements focussed on the energy range from 16 to 20.5 MeV with few exceptions. Half-lives of the reactions studied vary from 6.3 s to 20300 years. Isotopically enriched samples and high purity natural samples were used to separate reactions leading to the same activity. The measurement results are compared with work by other authors, current evaluated data files and new model calculations. The ongoing and planned work is indicated.