Angle-integrated neutron emission spectra at 14 MeV for Be, C, F, Mg, Al, Si, V, Fe, Cr, Cu, Pb and Bi

Using measured double differential neutron emission cross sections at 14.1 MeV for 15 to 16 angle-points, angle-integrated neutron emission spectra in the center-of-mass system were deduced for Be, C, F, Mg, Al, Si, V, Fe, Cr, Cu, Pb and Bi. These angle-integrated data are useful to assess partial emission cross sections of elastic, discrete inelastic, continuum inelastic scattering and other reaction channels like (n,2n) given in evaluated nuclear data libraries, e.g., JENDL-3 and ENDF/B-IV. Through comparison between experimental and evaluated emission data, status of JENDL-3T or ENDF/B-IV at 14 MeV has been made clear in this report. Significant improvement has been made by JENDL-3T for most elements except Be and Pb. For Be and Pb, further investigation is needed to improve JENDL-3T. Generally, improvement is needed to reproduce the forward-enhancement of neutron emission in double differential data. (author)