Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function

IMECH-IR > 力学所知识产出(1956-2008)

	Statistical-theory of multiphoton excitation of polyatomic-molecules based on the wigner function
	Jie BM(解伯民); Wei X; XIE, BM (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING,PEOPLES R CHINA.
发表期刊	Journal of Chemical Physics
	1986
卷号	84 期号:1 页码:114-121
ISSN	0021-9606
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.
收录类别	SCI
语种	英语
WOS记录号	WOS:A1986AWP4700016
WOS研究方向	Physics
WOS类目	Physics, Atomic, Molecular & Chemical
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/39750
专题	力学所知识产出(1956-2008)
通讯作者	XIE, BM (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	Jie BM,Wei X,XIE, BM . 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,&XIE, BM .(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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