Calculations of nonlinear spectra of liquid Xe. II. Fifth-order Raman response

被引:47
作者
Cao, JS [1 ]
Yang, SL [1 ]
Wu, JL [1 ]
机构
[1] MIT, Dept Chem, Cambridge, MA 02139 USA
关键词
D O I
10.1063/1.1445746
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The polarization dependence and temporal profile of the fifth-order Raman response function and corresponding correlation function in liquid Xe are studied both analytically and numerically. Based on the symmetry of an isotropic sample, the fifth-order Raman response function has twelve distinct tensor elements, ten of which are independent, and the corresponding correlation function has twelve distinct tensor elements, seven of which are independent. The coefficients for decomposition into independent components are calculated explicitly based on the tensor property of an isotropic sample and are used to identify different coupling mechanisms in liquid Xe. The two-dimensional profile of the fifth-order Raman response function is evaluated by a simple hydrodynamic expression derived using the Gaussian factorization scheme. An alternative approach reduces the fifth-order Raman response function to time correlation functions that are easy to compute. (C) 2002 American Institute of Physics.
引用
收藏
页码:3760 / 3776
页数:17
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