Elastic light scattering by randomly oriented macromolecules: Computation of the complete set of observables
Elastic light scattering by randomly oriented macromolecules: Computation of the complete set of observables
复制标题
随机取向大分子的弹性光散射：完整可观测量集的计算
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
W. Ghoul
中科院分区：
文献类型：
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作者：
W. M. McClain;W. Ghoul
我们提出了一个计算的所有角度依赖的观测值，完全表征的弹性散射的光从解决方案的任意大小和形状的大分子。该算法体现了在大分子的所有取向上的精确分析平均的结果，其与散射波长相比可能是大的。我们的结果可以直接与实验相比较;它们被表示为一个4 × 4的Perrin矩阵，将入射光的四个斯托克斯参数与散射光的四个斯托克斯参数联系起来。我们先前确定为延迟元件的佩兰元件表现出它们应有的行为：当我们假设大分子亚基之间的瞬时电磁相互作用时，它们消失了;当相互作用以光速进行时，它们是有限的，并且可能具有容易测量的大小。我们的算法捕获了Mie解决方案中存在的所有物理效应，用于球体散射;但与...
We present a calculation of all of the angle dependent observables that characterize completely the elastic scattering of light from solutions of macromolecules of arbitrary size and shape. The algorithm embodies the result of an exact analytic average over all orientations of the macromolecule, which may be large compared to the scattered wavelength. Our results are directly comparable to experiment; they are presented as a four‐by‐four Perrin matrix linking the four Stokes parameters of the incident light to the four Stokes parameters of the scattered light. The Perrin elements which we previously identified as retardation elements behave as they should: When we assume instantaneous electromagnetic interaction among the subunits of the macromolecule, they vanish; when the interaction is assumed to proceed at the speed of light, they are finite and may have easily measurable magnitude. Our algorithm captures all of the physical effects present in the Mie solution for scattering by spheres; but unlike the...