关键词: 
高电荷态离子 /
X射线 /
动能阈值

摘要: 测量了动能为2.0 MeV 的高电荷态离子¹⁵²Eu²⁰⁺入射Au 表面产生的Au 的M_ζ，M_α 和M_β 特征X射线和Eu 的M -X 射线。对X射线产生的微观机制进行了初步分析，并通过半经典两体碰撞近似，估算了Eu²⁰⁺与Au 作用产生的Au 的M-X 射线和Eu 的M-X 射线的动能阈值。此结果对高电荷态离子与固体表面相互作用的动力学过程的研究以及在辐射能量转换效率研究中如何选取合适的弹靶组合具有重要的参考价值。It is measured that the characteristic X-ray spectra of M_ζ，M_α and M_β of Au and the characteristic X-ray spectra of M of Eu produced by the interaction of highly charged ions of ¹⁵²Eu²⁰⁺ with kinetic energy 2.0 MeV on Au surface. The micro-mechanism of X-ray excitation is preliminary analyzed. The kinetic energy threshold of M-X ray of Au and M-X ray of Eu emitted by Eu²⁰⁺ with Au is estimated by semiclassical approximation theory of binary collision. The threshold has important referenced value in the study on dynamics of the interaction of highly charged ions with solid surface and on how to choose better target and projectile combination in the conversion efficiency of radiation energy.