Kerr effect and polarizability tensor of gaseous ethene
Kerr effect and polarizability tensor of gaseous ethene
复制标题
气态乙烯的克尔效应和极化张量
DOI：
10.1080/00268979400101441
复制
发表时间：
1994
影响因子：
1.7
通讯作者：
W. Hüttner
中科院分区：
文献类型：
--
作者：
R. Tammer;W. Hüttner
在波长为632·8 nm的条件下，测量了不同温度下乙烯的电场双折射随压力的变化关系。外推到零密度后的摩尔克尔常数的计算结果表明，对于超极化率各向异性，γK = 5·62（28）× 10-61 C4 m4 J-3，δ 2KE = 3/2（α1α0 1 + 2α2α0 2）= 3·058（52）× 10-80 C4 m4 J-2，其中αi，α0 i，i = 1，2分别为标准光学和静态极化率各向异性。将δ2 KE与其他实验方法的数据以及理论色散关系相结合，得到自由乙烯分子的完整极化率张量：在λ = 632·8 nm处，α xx = 4·41（4），α yy = 3·79（3），α zz = 5·94（2），α0 xx = 4·30（4），α0 yy = 4·09（3），α0 zz = 5·81（2）（均为10-40 C2 m2 J-1; z沿着双键，y垂直于分子平面）。
The pressure dependence of the electric field induced birefringence of ethene has been measured for λ = 632·8 nm, at different temperatures. Evaluation of the molar Kerr constants after extrapolation to zero density yielded γK = 5·62(28) × 10-61 C4 m4 J-3 for the hyperpolarizability anisotropy and δ2 KE = 3/2(α1α0 1 + 2α2α0 2) = 3·058(52) × 10-80 C4 m4 J-2, where αi, α0 i, i = 1, 2, are the standard optic and static polarizability anisotropies, respectively. Combining δ2 KE with data of other experimental methods as well as a theoretical dispersion relation leads to the complete polarizability tensor of the free ethene molecule: α xx = 4·41(4), α yy = 3·79(3), and α zz = 5·94(2) at λ = 632·8 nm, and α0 xx = 4·30(4), α0 yy = 4·09(3), α0 zz = 5·81(2) (all in 10-40 C2 m2 J-1; z along the double bond, y perpendicular to the molecular plane).