Measurement of differential cross sections of neutron-induced alpha production reactions on carbon from 6.3 to 102.3 MeV

The angle-differential cross sections of neutron-induced alpha production from carbon were measured at 122 neutron energies from 6.3 to 102.3 MeV at China Spallation Neutron Source (CSNS) Back-n white neutron source. By employing the dE-E telescopes of the Light-charged Particle Detector Array (LPDA) system at 24.5 degree to 155.5 degree in the laboratory system, the angle-differential cross sections of the 12C(n,a)x reactions were measured. The experimental results are in good agreement with the previous ones,and compared with the ones calculated by the talys and Geant4.The structures were found for the first time at neutron energies 13.7 MeV, 22.4 MeV, 29.5 MeV and 61.8 MeV.The present work can provide a reference to the data library considering the lack of experimental data.