摘要
用速度不同的(动能EK=272和357keV,速度v=1.14×106和1.72×106m/s)的高电荷态离子40Ar17+分别入射金属Be表面,同时测量这种相互作用过程中产生的近红外光谱线和X射线谱。实验结果表明,在低速范围内(速度小于玻尔速度vBohr=2.19×106m/s),速度较小的40Ar17+离子在到达金属的表面临界距离Rc到进入表面(2—3原子层)的进程中,形成了较多的高激发态Ar原子,其退激辐射较强的光谱线,进而验证了经典过垒模型。
The highly charged ion 40Ar17+(kinetic energy EK=272 keV,velocity v=1.14×106 m/s and EK=357 keV,v=1.72×106 m/s)impacts on the surface of metal Be,and the atomic infrared light line and X-ray spectrum are simultaneously measured.The experimental results show that in the low velocity region(less than vBohr),the highly charged ion with smaller velocity from a critical distance Rc to penetrate into the bulk formed more multiple-excited Ar atoms and the spectrum intensities of decay radiation are greater,which verifies the classical over-the-barrier model.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2010年第3期357-362,共6页
Nuclear Physics Review
基金
国家自然科学基金资助项目(10574132)
陕西省自然科学基金资助项目(2007A05)~~