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Statistical Fluctuation of Intensity in Debye-Scherrer Lines Due to Random Orientation of Crystal Grains

Hans Ekstein

出版	National Advisory Committee for Aeronautics, 1951
URL	http://books.google.com.hk/books?id=mKjZSgAACAAJ&hl=&source=gbs_api

註釋

Fluctuations of intensity are discussed for the case of line width caused by only the natural spectral width of the primary radiation and the finite size of the grains (that is, pure Fraunhofer diffraction). Mean deviation of the centroid of the intensity curve from the Bragg angle for the strongest wave length is considered as the error in measuring the line and is theoretically estimated. For a typical case (grains of 0.0002 cm length and 1-sq-mm irradiated area), the error was found to be about 10 times smaller than that previously reported.