采用组合叠层CR-39固体径迹探测器实验方法测量了加速器D(d,n)反应产生的5MeV与2MeV准单能中子能谱。进而测量了入射氘离子能量为3MeV时加速器厚铍靶9Be(d,n)反应的中子能谱,与已有的飞行时间法的测量结果基本相符。在此基础上,用该法又测量了入射氘离子能量为1.5MeV时加速器厚铍靶9Be(d,n)反应的中子能谱,结果符合较低能量氘离子与厚铍靶发生9Be(d,n)的核反应的物理过程。
Using the CR-39 track detector stack, the mono-energetic neutron spectra for En= 5 MeV and 2 MeV from accelerator D(d,n) reaction were measured. The spectrum measurement of neutrons emitted from thick beryllium target irradiated by 3 MeV or 1.5 MeV d beams from the 4.5 MV accelerator at Peking University was performed. The results agree with that of the time-of-flight method.