用能量为60keV的Ar~+束轰击纯度为99.999％的多晶Au靶。Ar~+束入射方向与靶面方向夹角为60°。为了测量被溅射的Au原子的角分布,设计了一种封闭式的捕集器,利用薄碳膜作为收集膜,收集入射平面内的溅射原子。然后把收集膜与标准样品Au箔叠加在一起,经中子发生器的14MeV快中子在同一几何下辐照后,用Ge(Li)γ谱仪、多道分析器和电子计算机 A polycrystalline Au target having a purity of 99.999% was bombarded with an Ar ~ + beam having an energy of 60 keV. The angle between the incident direction of Ar ~ + beam and the direction of the target surface is 60 °. In order to measure the angular distribution of sputtered Au atoms, a closed trap was designed using a thin carbon film as a collecting membrane to collect sputtered atoms in the incident plane. The collection membrane was then superimposed on a standard sample of Au foil. After the 14 MeV neutrons from the neutron generator were irradiated under the same geometry, the Ge (Li) gamma spectrometer, multichannel analyzer and computer