Farone W A, Robinson M J
R&D Division, Lever Brothers Company, Edgewater, New Jersey 07020, USA.
Appl Opt. 1968 Apr 1;7(4):643-5. doi: 10.1364/AO.7.000643.
The ranges of refractive index and particle size over which the anomalous diffraction approximation is valid to within 15%, 50%O, and 100% are mapped. The approximation is found to have a broader range of applicability for the extinction efficiency than the Rayleigh-Gans approximation. The large range of validity explains the success of schemes for determining particle size distributions of spheres from extinction measurements based on analytic inversions of formulas containing the approximation.
绘制了反常衍射近似在15%、50%和100%范围内有效时的折射率和粒径范围。结果发现，与瑞利 - 甘斯近似相比，该近似在消光效率方面具有更广泛的适用范围。较大的有效范围解释了基于包含该近似公式的解析反演从消光测量确定球体粒径分布的方案的成功之处。
