Evaluation of the D(n,2n)p reaction cross-section

D(n,2n)p is one of the simplest three nucleons reactions without Coulomb interaction, it is very significant for searching after nuclear force and nuclear theory. Deuterium is one of the important fusion fuels, therefore D(n,2n)p reaction cross-sections are useful for nuclear power development. It is difficult to measure the D(n,2n)p reaction cross-sections, up to now all the measured data of 13 sets have been collected from threshold to 25 MeV. The original data and errors of all the experiments were analyzed. The recommended values of D(n,2n)p reaction cross-sections were obtained on basis of least-squares fit with orthogonal polynomial, and were compared with the theoretical calculation and the ENDF/B-VII.1, JEFF-3.2, JENDL-4.0 and CENDL-3.1. (author)