氧离子激发光谱的精密测量  

Precision measurement of excited spectra of oxygen ions

作　　者：杨治虎[1] 张小安[1,2] 赵永涛[1] 殷纬纬[1] 李宁溪[1] 

机构地区：[1]中国科学院近代物理研究所 [2]咸阳师范学院物理系,咸阳712000

出　　处：《物理学报》2006年第9期4520-4527,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10375080;10574132);等离子体物理国家级科技重点实验基金(批准号:5148002010ZK5101)资助的课题.~~

摘　　要：在2×1.7串列加速器上利用束-箔方法和装有CCD的Spectrapro-500i光谱单色仪的测量装置,在2MeV束能下研究了250nm—350nm波长范围离化态氧原子光谱.在250nm—350nm范围已确定的201条光谱线,确定的跃迁大部分属于OⅡ到OⅣ原子的n,l能级间的跃迁,一些实验结果与现有理论一致.实验发现,在这个范围的光谱大都属于弱跃迁谱线,并且许多谱线是以前没有观测到的.Spectra of the ionized oxygen atom were researched with the Pro-500i monochromator equipped with CCD. The beam foil method was used at energy of 2 MeV in a 2 × 1.7 Tandem accelerator. In this work, we report 201 spectral lines determined in the region 250-350 nm, and most spectral lines were attributed to n, l energy level transitions from O Ⅱ to OⅣ atoms. Our experimental results are in good agreement with existing theoretical calculations. Many lines reported in this paper have not been measured in past experiments, and a majority of them are week transitional lines.

关 键 词：串列加速器 氧离子 CCD 光谱 

分 类 号：O562.3[理学—原子与分子物理]