$D_2$发射光谱可见部分旋振谱线精细结构的观测
Observation of the fine structure for rovibronic spectral lines in visible part of emission spectra of $D_2$
摘要：
首次在$D_2$发射光谱的可见光部分观察到代表部分分辨的旋振电子线精细结构的赝二重峰。它们的特征在于约0.2 cm $^{-1}$的分裂值和接近2.0的双峰组分的相对强度。结果表明，它们是由各种$^3Λ_g^\pm \to c^3Π_u^-$电子跃迁的较低振子能级的三重态分裂决定的。建议使用存在的这种部分解决的精细结构模式，用于识别的$D_2$分子的许多未分配的谱线来自各种各样的三重态“gerade”电子状态的振动旋转水平的$c^3Π_u^-$状态。
英文摘要：
For the first time in visible part of the $D_2$ emission spectrum the pseudo doublets representing partly resolved fine structure of rovibronic lines have been observed. They are characterized by splitting values about 0.2 cm$^{-1}$ and relative intensity of the doublet components close to 2.0. It is shown that they are determined by triplet splitting in lower rovibronic levels of various $^3Λ_g^\pm \to c^3Π_u^-$ electronic transitions. It is proposed to use an existence of such partly resolved fine structure patterns for identification of numerous unassigned spectral lines of the $D_2$ molecule coming from great variety of triplet "gerade" electronic states to vibro-rotational levels of the $c^3Π_u^-$ state.
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