Some neutron activation cross sections in the heavy mass region at 14 MeV

Neutron activation cross sections were measured for the reactions, 158Gd(n,α)155Sm, 176Yb(n,2n)175Yb, 174Hf(n,2n)173Hf, 181Ta(n,α)sup(178m)Lu and 208Pb(n,p)208Tl, at 14.2 +- 0.2 MeV, using the mixed-powder technique and high-resolution Ge(Li) detection. The measured (n,2n) cross sections were compared with the predictions based on statistical and pre-equilibrium theories. The (n,α) and (n,p) cross sections were compared with the recent empirical estimates. (author)