HYPERPOLARIZABILITIES MEASURED FOR INTERACTING MOLECULAR PAIRS

被引：27

作者：

DONLEY, EA

SHELTON, DP

机构：

[1] Physics Department, University of Nevada, Las Vegas, Las Vegas

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 215卷 / 1-3期

关键词：

D O I：

10.1016/0009-2614(93)89280-U

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：

Hyperpolarizability ratios for molecules have been measured with 0.1% accuracy, at lambda=514.5 nm, in the gas phase as a function of density. These measurements yield gamma(H-2)/gamma(He)=19.55+/-0.03, gamma(Ar)/gamma(H-2)=1.668+/-0.002 and gamma(N2)/gamma(H-2)=1.283+/-0.001 in the zero density limit. Pair interaction contributions, determined from the density dependence of gamma, are larger than predicted assuming classical multipolar interactions, and of the opposite sign. Extrapolated to liquid density, the pair interaction contributions to gamma are about as large as the isolated molecule contributions to gamma for Ar and N2.

引用

页码：156 / 162

页数：7

共 34 条

[1] REFRACTIVITY VIRIAL-COEFFICIENTS OF GASEOUS CH4, C2H4, C2H6, CO2, SF6, H2, N2, HE, AND AR [J].