DOUBLE DIFFERENTIAL NEUTRON EMISSION CROSS SECTIONS AT 14.1 MEV FOR BE, V AND FE
Department of Nuclear Engineering, Osaka University
Yamadaoka 2-1, Suita, Osaka 565, Japan
Double differential neutron emission cross sections for Be, V and Fe have been measured with incident neutrons of 14.1 MeV, based on the pulsed neutron and TOF technique with an 8.3 m long flight path. From these data, angle-integrated neutron emission spectra were reduced. Results were compared with the latest JENDL-3T and the ENDF/B-IV data. Disagreements were consequently significant for Be and V. The analysis of the 9Be(n,2n) reaction considering the direct multibody breakup process revealed good agreement with the measured data. For V, the treatment of the precompound and compound processes by the GNASH86 code gave much better emission spectra than the ENDF/B-IV data.
KEYWORDS: 14.1 MeV, neutron emission, double differential, Be, direct breakup, V, Fe, JENDL-3T