The multiple group cross sections are indispensable when we want to obtain the neutron spectrum by multiple foilactivation method.
在利用活化法进行中子能谱测量中，活化箔的多群截面是必须的输入参数之一。
2
The calculating results of activation energy show that the diffusibility of nanometer Ni is better than Ni foil in diffusion layer at joints.
通过计算接头处扩散层的激活能可知纳米镍的扩散性能比镍箔的好。
3
Yields of neutron generators have been measured by the iron foil neutron activation method and a long counter separately. The methods and results are given.