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Grain size measuring method

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专利汇可以提供Grain size measuring method专利检索,专利查询,专利分析的服务。并且PURPOSE: To measure grain size in short time series with high accuracy by calculating an autoregression coefficient, a root, and the grain size according to the fact that a photon probability process and an autoregression probability process are considered to be equivalent.
CONSTITUTION: Laser light from an Ar laser 1 is guided to a cell 6 through a mirror 2, a shutter 3, a mirror 4, and a condenser system 5. Then scattered light from a cell 6 is guided to a photon counter 9 such as a photoelectron multiplier tube through a polarizing plate 7 and a filter 8. Further, the light is amplified by a preamplifier discriminator 10 and then supplied to a counter 11, whose counter signal is supplied to a microcomputer 12, which calculates the autoregression coefficient and root Zm and calculates the grain size dm from an equation. Further, the cell 6 is dipped in a thermostatic chamber 13 and driven to rotate. In this equation, (m) is 1, 2,..., M, (a) 16πkTn
2 sin
2 (θ/2)/3ηλ
2 , (k) is Boltzman's constant, T absolute temperature, (n) the refractive index of a solvent, θ a scattering angle, η viscosity, λ the wavelength of laser light, and dm the Stokes grain size.
COPYRIGHT: (C)1988,JPO&Japio,下面是Grain size measuring method专利的具体信息内容。

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