Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function
文献类型：期刊论文
| 作者 | Jie BM(解伯民) ; Wei X
|
| 刊名 | Journal of Chemical Physics
 |
| 出版日期 | 1986 |
| 卷号 | 84期号:1页码:114-121 |
| ISSN号 | 0021-9606 |
| 通讯作者 | XIE, BM (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING,PEOPLES R CHINA. |
| 中文摘要 | This paper is aimed at establishing a statistical theory of rotational and vibrational excitation of polyatomic molecules by an intense IR laser. Starting from the Wigner function of quantum statistical mechanics, we treat the rotational motion in the classical approximation; the vibrational modes are classified into active ones which are coupled directly with the laser and the background modes which are not coupled with the laser. The reduced Wigner function, i.e., the Wigner function integrated over all background coordinates should satisfy an integro-differential equation. We introduce the idea of ``viscous damping'' to handle the interaction between the active modes and the background. The damping coefficient can be calculated with the aid of the well-known Schwartz–Slawsky–Herzfeld theory. The resulting equation is solved by the method of moment equations. There is only one adjustable parameter in our scheme; it is introduced due to the lack of precise knowledge about the molecular potential. The theory developed in this paper explains satisfactorily the recent absorption experiments of SF6 irradiated by a short pulse CO2 laser, which are in sharp contradiction with the prevailing quasi-continuum theory. We also refined the density of energy levels which is responsible for the muliphoton excitation of polyatomic molecules. |
| 类目[WOS] | Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Physics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1986AWP4700016 |
| 公开日期 | 2009-08-03 ; 2010-08-20 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/39750]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Jie BM,Wei X. Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function[J]. Journal of Chemical Physics,1986,84(1):114-121. |
| APA | 解伯民,&Wei X.(1986).Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function.Journal of Chemical Physics,84(1),114-121. |
| MLA | 解伯民,et al."Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function".Journal of Chemical Physics 84.1(1986):114-121. |
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来源：力学研究所
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