不同动能的^(129)Xe^(26+)与Au表面作用产生的X射线谱

X-ray spectrum emitted by the impact of (129)~Xe^(26+)of the different kinetic energies on Au surface

测量了动能为350—600 keV和1.8—3.9 MeV的129Xe26+入射Au表面产生的X射线谱.结果表明,350—600 keV的Xe26+仅激发出了Au的Mα特征X射线,而1.8—3.9 MeV的Xe26+可激发出Au的Mζ,Mα,Mγ和Mδ特征X射线.分析了X射线强度和产额比与入射离子动能的关系,并估计了Xe26+激发Xe的L-X射线的动能阈值.

The characteristic X-ray spectra produced by the impact of 129Xe26＋ with kinetic energies from 350 to 600 keV and from 1.8 to 3.9 MeV on Au surface are measured. It is found that 129Xe26＋ with kinetic energies from 350 to 600 keV can excite only the characteristic X-ray spectra of Mαof Au, but 129Xe26＋ with kinetic energies from 1.8 to 3.9 MeV can excite the characteristic X-ray spectra of Mζ, Mα, Mγand Mδ. The relation between the characteristic X-ray intensity, the ratio of X-ray yield and the ion kinetic energy is analyzed. The kinetic energy threshold of L-X-ray of Xe emitted by Xe26＋ is estimated.