| Spectroscopic analysis of asymmetric top free radicals——Application to pure rotational spectra of NO_2 in the ground vibronic state |
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| 引用本文： | 刘煜炎
,刘效庸
,刘红平
,郭远清
,黄光明
,林洁丽
,高晖
,段传喜.Spectroscopic analysis of asymmetric top free radicals——Application to pure rotational spectra of NO_2 in the ground vibronic state[J].中国科学B辑(英文版),2001,44(1). |
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| 作者姓名： | 刘煜炎 刘效庸 刘红平 郭远清 黄光明 林洁丽 高晖 段传喜 |
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| 作者单位： | LIU Yuyan LIU Xiaoyong LIU HongpingGUO Yuanqing HUANG Guangming LIN JieliGAO Hui DUAN ChuanxiState Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics and Mathematics，Chinese Academy of Sciences，Wuhan 430071，China |
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| 基金项目： | the National Natural Science Foundation of China (Grant No. 19704016). |
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| 摘 要： | Several key problems involved in the analyses of spectra of asymmetric top molecules, i.e., the effective Hamiltonian, the representation and basis vector, identification of energy levels, the selection rules, the relative intensity, and Zeeman tuning rate, were elucidated systematically. Introducing the high-order centrifugal distortion terms into the effective Hamiltonian, the precision for calculation has been improved substantially, which allows us to analyze the high-lying rotational transitions. A global analysis of all available spectra of 14N16O2 in the ground vibronic state has been made to obtain a set of molecular constants of 14N16O2 in the ground vibronic state which is the most precise and extensive so far. Using the improved parameters, some FIR LMR lines left unassigned hitherto have been identified successfully.
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Spectroscopic analysis of asymmetric top free radicals--Application to pure rotational spectra of NO_2 in the ground vibronic state |
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| LIU Yuyan,Liu Xiaoyong,Liu Hongping,GUO Yuanqing,HUANG Guangming,LIN Jieli,GAO Hui,DUAN Chuanxi.Spectroscopic analysis of asymmetric top free radicals--Application to pure rotational spectra of NO_2 in the ground vibronic state[J].Science in China(Chemistry),2001,44(1). |
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| Authors: | LIU Yuyan Liu Xiaoyong Liu Hongping GUO Yuanqing HUANG Guangming LIN Jieli GAO Hui DUAN Chuanxi |
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| Institution: | State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | Several key problems involved in the analyses of spectra of asymmetric top molecules, i.e., the effective Hamiltonian, the representation and basis vector, identification of energy levels, the selection rules, the relative intensity, and Zeeman tuning rate, were elucidated systematically. Introducing the high-order centrifugal distortion terms into the effective Hamiltonian, the precision for calculation has been improved substantially, which allows us to analyze the high-lying rotational transitions. A global analysis of all available spectra of 14N16O2 in the ground vibronic state has been made to obtain a set of molecular constants of 14N16O2 in the ground vibronic state which is the most precise and extensive so far. Using the improved parameters, some FIR LMR lines left unassigned hitherto have been identified successfully. |
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| Keywords: | asymmetric top free radical high-order centrifugal distortion spectroscopic analysis of NO2 |
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