Monte Carlo simulations of increased/decreased scattering inclusions inside a turbid slab.
Monte Carlo simulations of increased/decreased scattering inclusions inside a turbid slab.
复制标题
浑浊板片内散射夹杂物增加/减少的蒙特卡罗模拟。
DOI：
10.1088/0031-9155/50/23/011
复制
发表时间：
2005
影响因子：
3.5
通讯作者：
Gandjbakhche,AmirH
中科院分区：
文献类型：
--
作者：
Dagdug,Leonardo;Chernomordik,Victor;Weiss,GeorgeH;Gandjbakhche,AmirH
我们分析了混浊平板中反常光学夹杂对散射光子的影响。我们这样做的动机是，夹杂物影响用于量化透射光实验中测量的透射光强度的光学特性的散射对比度。该分析基于晶格随机游走理论，它同时考虑了散射系数与体散射系数的正偏差和负偏差的影响。我们的模拟表明，这两类扰动的影响之间存在质的差异。在正扰动的情况下，时滞与夹杂大小的平方成正比，而在负扰动的情况下，时滞是其体积的线性函数。
We analyse the effect on scattered photons of anomalous optical inclusions in a turbid slab with otherwise uniform properties. Our motivation for doing so is that inclusions affect scattering contrast used to quantify optical properties found from transmitted light intensity measured in transillumination experiments. The analysis is based on a lattice random walk formalism which takes into account effects of both positive and negative deviations of the scattering coefficient from that of the bulk. Our simulations indicate the existence of a qualitative difference between the effects of these two types of perturbations. In the case of positive perturbations the time delay is found to be proportional to the square of the size of the inclusion while for negative perturbations the time delay is a linear function of its volume.