129Xe30+轰击Ni表面激发靶原子偶极跃迁和禁戒 (M1和E2)跃迁的特征光谱线

报道了用高电荷态离子129Xe30+(150keV) 轰击金属Ni表面，激发的200—1000nm NiⅠ和NiⅡ的特征光谱线的实验结果.实验结果表明：用电荷态足够高的离子作光谱 激发源，无需很强的束流强度（nA量级），便可有效地产生原子和离子的复杂组态间跃迁所 形成的可见光波段的特征谱线，特别是NiⅠ和NiⅡ偶极禁戒的电四极跃迁E2和磁偶极跃迁M1 的特征光谱线.通过分析发现，在禁戒跃迁的谱线中，有些是电子组态相同而原子态不同的 偶极禁戒跃迁光谱线而且NiⅡ的684.84nm谱线较强. 关键词： 光谱 禁戒跃迁 电子组态 高电荷态离子

Atomic and ionic light emission spectra of dipole transition and forbidden transition induced by the impact of 126Xe30+ on Ni solid surface

The measurement of light spectrum of NiⅠand NiⅡwith wavelengths from 200 to 1 000nm emitted from the solid surface of Ni, which is excited by slow highly char ged ions 126Xe30+，is reported. The result shows that the chara cteristic spectral lines from transitions between complex configurations of atom s and ions can be effectively excited by the impact of highly charged ions on a solid surface even though the ionic beam is very weak. The result shows especia lly that the characteristic spectral lines from forbidden transition (M1and E2) of NiⅠand NiⅡcan be effectively excited.