双原子分子高振转激发态跃迁谱线间的相互关系研究

Studies on the Relationship Among Spectral Lines of Rovibrational Transitions of Diatomic System

从双原子分子跃迁谱线的普遍表达式出发,建立了预言双原子分子P、R、Q线系高激发振转跃迁谱线的新代数方法,并给出了1组解析的物理公式。本文从这些公式出发,以TiF(4Γ5/2-4φ3/2)的(0,0)振动带的Q支跃迁谱线为例,进一步分析了高激发振转跃迁谱线的相互依赖关系,定义了表征实验测定谱线对新谱线的贡献度C(contribution)参数。结果表明,新代数方法提出的物理公式不仅很好地复现已知的实验数据,正确地预言了实验未能测定的很多高激发振转跃迁谱线,而且还能了解不同实验谱线对新谱线的贡献程度,使人们能深入地了解给定跃迁体系中各条谱线之间的相互关系。

A group of analytical formulae are obtained resently by Sun and coworkers to predict the accurate P, R, Q -branch spec- tral lines of rovibrational transitions for diatomic systems respectively. This study defines a contribution degree C to measure the contri- butions of known experimental spectral lines to the predicted line. The analyses on the predicted Q - branch emission lines of the （0, 0 ） band of the systems of TiF molecule show that these new formulae produce accurate values for the unknown lines of high - lying rota- tional states, and that the contribution degree C makes it easier for one to understand the relationships and influences among the transi- tion lines of the given system.