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WF_6分子伸缩振动能谱的非线性模型计算(英文)

Stretching vibrational spectra of WF_6 molecule from a nonlinear model
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摘要 利用一个四参数非线性模型对处于电子基态下的XY6型分子的X -Y键的伸缩振动进行了描述 ,并将其应用于计算WF6分子中W -F键的伸缩振动能级。计算中引入的模型Hamilton算符所包含的描述WF键非谐振动的参数λ和描述WF键之间的偶极 -偶极相互作用参数ε1,ε2 由实验值得出 ,波函数 |ψn〉按形式为 |n ,α〉 =|n1〉|n2 2〉|n3 〉|n4〉|n5〉|n6〉的基函数集展开 ,从而把复杂的Hamilton方程转化为简单的矩阵代数方程。结果显示该非线性模型能够较好地描述了WF6分子的振动 (计算误差在 0 .6cm-1之内 ) ,同时合理地预测了一些至今还未观测到的能级值。 A four-parameter nonlinear model is introduced to the description of the X-Y stretching modes of XY_6 octahedral molecules in the electronic ground state, and applied to the calculations of vibrational energy spectra of WF_6 molecule. We demonstrate that the model calculations appear to describe the experimental data well with the corresponding accuracy within 0.6 cm^(-1).
出处 《原子与分子物理学报》 CAS CSCD 北大核心 2004年第1期139-142,共4页 Journal of Atomic and Molecular Physics
基金 ResearchsupportedbytheNationalNaturalScienceFoundationofChinaUuderGrantNO .10 2 740 5 5 theEducationalFoundationofSichuanProvinceunderGrantNo .2 0 0 3A0 77andSRFforROCS SEM .
关键词 WF6 伸缩振动 能谱 非线性模型 WF_6 Stretching vibration Energy spectra Nonlinear model
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