Vector Correlations and Product Rotational Alignments of Reactions Ca+RBr→CaBr+R(R=CH_(3),C_(2) H_(5) and n-C_(3) H_(7))  

作　　者：马建军[1] 丛书林[1] 张志红[1] 王艳秋[1] 

机构地区：[1]大连理工大学物理系,大连116024

出　　处：《Chinese Journal of Chemical Physics》2006年第2期117-122,共6页化学物理学报（英文）

基　　金：This work is supported by the National Natural Science Foundation of China （No.10374012）.

摘　　要：The quasiclassical trajectory method is used to study the vector correlations of the reactions Ca＋RBr （R=CH3, C2H5 and n-C3H7Br） and the rotational alignment of product CaBr. The product rotational alignment parameters at different collision energies and the vector correlations between the reagent and product are numerically calculated. The vector correlations are described by using the angle distribution functions P（θr）, P（φr）, P（θr, φr） and the polarization-dependent differential cross sections （PDDCSs）. The peak values of P（θr） of the product CaBr from Ca＋CH3Br are larger than those from Ca＋C2H5Br and Ca＋n-C3H7Br. The peak of P（θr） at φr= 3π/2 is apparently stronger than that at φr= x/2 for the three reactions Ca＋RBr. The calculation results show that the rotational angular momentum of the product CaBr is not only aligned, but also oriented along the direction which is perpendicular to the scattering plane.The product CaBr molecules are strongly scattered forward. The orientation and alignment of the product angular momentum will affect the scattering direction of the product molecules to varying degrees.

关 键 词：Quasiclassical trajectory Vector correlation Orientation and alignment 

分 类 号：O643.1[理学—物理化学] TN241[理学—化学]