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Since 1987 the measurements of angular distribution of discrete gamma-ray spectra for the interactions of 14.9 MeV neutrons with some elements of struc-ture materials of fusion reactor,for example,C,Al,U,Fe,Co and Nb,havebeen completed using a pulsed 400 kV Cockcroft walton accelerator and a gam-ma-ray spectrometer in Beijing Normal University,For every sample gamma-ray spectra at 30°,40°,55°,90°,110°,125°,and 140°relative to the incide-nt neutron direction were measured,and the differential cross sections for everygamma lines were determined,where the results at 90°are new independentmeasurements,The angular distributions of the differential cross sections of
Since 1987 the measurements of angular distribution of discrete gamma-ray spectra for the interactions of 14.9 MeV neutrons with some elements of struc-ture materials of fusion reactor, for example,C,Al,U,Fe,Co and Nb,havebeen completed using a pulsed 400 kV Cockcroft walton accelerator and a gam-ma-ray spectrometer in Beijing Normal University,For every sample gamma-ray spectra at 30°,40°,55°,90°,110°,125°,and 140°relative To the incide-nt neutron direction measured, and the differential cross sections for every gamma lines were determined, where the results at 90°are new independentmeasurements, The angular distributions of the differential cross sections of