Activation Cross Sections for the F19(n,2n)F18, Na23(n,2n)Na22, Mn55(n,2n)Mn54, In115(n,2n)In114m, Ho165(n,2n)Ho164m, In115(n,n')In115m, and Al27(n,α)Na24 Reactions

The (n,2n) activation cross sections of F¹⁹, Na²³, Mn⁵⁵, In¹¹⁵, and Ho¹⁶⁵ have been measured in the neutron energy range from 12.7 to 19.4 MeV. In addition, the activation cross sections for the In¹¹⁵(n,n')In^115m and Al²⁷(n,α)Na²⁴ reactions have been measured in the energy range from 1.0 to 19.4 MeV and from 6.1 to 19.4 MeV, respectively. Most of the measurements were made relative to the fission cross section of U²³⁵. The experimental (n,2n) cross sections have been compared with the predictions of the semiempirical cross-section theories of Pearlstein and of Gardner.