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Vibrational spectra and intramolecular vibrational redistribution in methane and its isotopomers

ISSN号：1674-1056
期刊名称：Chinese Physics B
时间：2012.10
页码：-
分类：O561.5[理学—原子与分子物理;理学—物理] O561.3[理学—原子与分子物理;理学—物理]
作者机构：[1]Department of Physics, Huazhong Normal University, Wuhan 430079, China, [2]School of Natural Science, Wuhan University of Technology, Wuhan 430079, China, [3]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
相关基金：Project supported by the National Natural Science Foundation of China （Grant No. 11174099）Acknowledgments The authors gratefully acknowledge Xie Mi for valuable discussions.
相关项目：多原子分子的高激发振动和量子关联研究

作者： Hou Xi-Wen|Wan Ming-Fang|Ma Zhong-Qi|

关键词：同位素替代, 振动光谱, 振动能量, 再分配, 分子内, 甲烷, FERMI共振, 代数模型, algebraic methods, vibrational spectra, intramolecular vibrational redistribution

中文摘要：

An improved U(2) algebraic model is introduced to study the stretching and bending vibrational spectra of methane and its isotopomers.The algebraic model with fewer parameters reproduces the experimental spectra with good precision.Moreover,the obtained parameters describe well the correct behavior of isotopic substitution.It is shown that the Fermi resonance leads to a very fast intramolecular vibrational redistribution among stretches and bends.

英文摘要：

An improved U（2） algebraic model is introduced to study the stretching and bending vibrational spectra of methane and its isotopomers.The algebraic model with fewer parameters reproduces the experimental spectra with good precision.Moreover,the obtained parameters describe well the correct behavior of isotopic substitution.It is shown that the Fermi resonance leads to a very fast intramolecular vibrational redistribution among stretches and bends.

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