Activation Cross Sections for (n, 2n) Reaction on Neodymium, Samarium, Gadolinium and Ytterbium at 14.6 MeV

抄録

Activation cross sections for the (n, 2n) reaction on Nd, Sm, Gd and Yb have been measured at 14.6 MeV by using a Ge(Li) r-ray detector. The following cross sections (mb) have been obtained : ¹⁴²Nd 1, 675±160, ¹⁴⁸Nd 1, 789±147, ¹⁵⁰Nd 1, 720±128, ¹⁵⁴Sm 2, 010±137, ¹⁶⁰Gd 2, 173±152, ¹⁷⁶Yb 2, 226±152. These (n, 2n) cross sections are compared with the theoretical calculations performed by a new model including pre-equilibrium and statistical models. A good agreement between the experimental and calculated cross sections is obtained.