首页> 外文期刊>Journal of Molecular Spectroscopy >Doppler-limited spectroscopy of the A~3Π_1 ← X~1Σ~+ system of ICl in the 0.8 μm region using a Ti:sapphire ring laser
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Doppler-limited spectroscopy of the A~3Π_1 ← X~1Σ~+ system of ICl in the 0.8 μm region using a Ti:sapphire ring laser

机译:使用Ti:蓝宝石环形激光在0.8μm范围内的ICl的A〜3Π_1←X〜1Σ〜+系统的多普勒光谱

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摘要

Doppler-limited vib-rotational absorption spectra of the A ← X electronic transition of I~(35/37)Cl are measured in the range 11,352-13,507 cm~(-1) using a Ti:sapphire ring laser. The P-, Q-, and R-branch lines belonging to the v ← v″ = (0-7) ← (0-7) transition in I~(35)Cl and the v ← v″ = (0-6) ← (2-6) transition in I~(37)Cl are assigned. Under Doppler-limited conditions, the P- and R-branch lines are split into doublets by the nuclear quadrupole coupling effect of the I atom. The unperturbed positions of these lines are correctly calculated, whereas splitting in the Q-branch lines was not observed. The mass-reduced Dunham expansion coefficients U_(l,m) of the A and X states and the spectroscopic constants Tv′,Bv′e/f, D~(v′), and Hv′ of the A state are determined using a global least-squares fitting procedure.
机译:使用Ti:蓝宝石环形激光在11,352-13,507 cm〜(-1)范围内测量了I〜(35/37)Cl的A←X电子跃迁的多普勒极限振动旋转吸收光谱。在I〜(35)Cl中属于v←v''=(0-7)←(0-7)的P-,Q-和R分支线,v←v''=(0-6 )分配了I〜(37)Cl中的←(2-6)跃迁。在多普勒限制条件下,P分支线和R分支线通过I原子的核四极偶合效应分裂为双峰。正确计算了这些线的未扰动位置,而未观察到Q分支线的分裂。使用a确定A和X状态的质量降低的Dunham膨胀系数U_(l,m)以及A状态的光谱常数Tv',Bv'e / f,D〜(v')和Hv'全局最小二乘拟合程序。

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