近Bohr速度的^(152)Eu^(20+)入射Au表面产生的X射线谱

X-ray spectrum emitted by the impact of ^(152)Eu^(20+) of near Bohn velocity on Au surface

测量了动能为2.0—6.0MeV的高电荷态离子152Eu20+入射Au表面产生的特征X射线谱,结果表明,相互作用不仅激发出了Au的Mζ,Mα和Mδ特征X射线,还激发出了Eu的MαX射线,且X射线总产额随入射离子动能的增加而增加.计算了Au的M壳层总的X射线产生截面,并与理论模型的计算结果做了比较分析.

The characteristic X-ray spectra produced by the impact of highly charged ions of 152Eu20＋ with energies from 2.0 to 6.0 MeV on Au surface are measured. It is found that highly charged ions could excite both the characteristic X-ray spectra of Mζ, Mα and Mδ of Au and the characteristic X-ray spectra of Mα of Eu. The total X-ray yield increases with the ion kinetic energy increasing. The total production cross section of Au induced by Eu20＋ is measured and compared with those obtained from the binary encounter approximation, plane-wave-Born approximation, and the energy-loss Coulomb deflection perturbed stationary state relativistic theoretical models.