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| ITA | |||
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The program performs computation of
light-scattering characteristics for media formed of polydispersed spherical
isotropic homogeneous particles. The computations are carried out in two
approximations. One of them is the interference approximation (ITA), which is
often used to calculate light fields in dispersive media with high particle
concentration. ITA is based on the assumption that at a high particle
concentration the determining role is played by the interference effects caused
by the correlation in the disposition of individual scatterers. The other
approximation is the independent scattering approximation (INA) widely used to
calculate light fields in dispersive media with a small concentration of
scatterers. |
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| ITA advantages | |||
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Computation of the following light-scattering characteristics: | ||
| - | the single-scattering intensity for unpolarized incident light, | ||
| - | scattering coefficient normalized to the wave number of the background medium, | ||
| - | extinction coefficient normalized to the wave number of the background medium, | ||
| - | extinction coefficient in the ITA normalized to the extinction coefficient in the INA, | ||
| - | phase function for unpolarized incident light, | ||
| - | asymmetry parameter of the phase function, | ||
| - | size-averaged scattering cross section of a particle, | ||
| - | size-averaged extinction cross section of a particle, | ||
| - | energy of light single-scattered in angles from 0 to theta, in parts of total single-scattered energy. | ||
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Comfortable and friendly Microsoft Excel®-family interface, | ||
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Graphic representation of table data for quick and easy-to-interpret analysis of computation results, | ||
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| ITA applications | |||
| ITA program was used in the following articles: | |||
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V. P.Dick, V. A. Loiko ,
"Model for coherent transmittance calculation for polymer dispersed liquid
crystal films," Liquid Crystals, vol.28, No.8, p.1193-1198(2001),
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V. P. Dick, A. P. Ivanov ,
"Extinction of light in dispersion media with a high particle concentration:
applicability limits of the interference approximation," J. Opt. Soc. Am.
A., vol.16, No.5, p.1034-1039(1999). |
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Free demo version of ITA is
available. The demo version is restricted to relative refractive index of
particles m=1.2+i0. |
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| Download demo version | Purchase | |||
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