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Absorption Factor in Crystal Spectroscopy

Albrecht, Gustav (1939) Absorption Factor in Crystal Spectroscopy. Review of Scientific Instruments, 10 (8). pp. 221-222. ISSN 0034-6748. doi:10.1063/1.1751537.

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In the determination of the structure of a crystal with x-rays, it is essential that a reliable set of diffraction intensity data be obtained. During its passage through the crystal, the x-ray beam suffers a diminution in intensity due to absorption by the crystal itself, and the extent of this absorption will in general be different for different crystal planes. This variable factor has long been troublesome in crystal work, since its estimation presents a difficult problem even in simple special cases. The case of a cylindrical powder sample has been treated by various investigators, notably A. Claassen and A. J. Bradley. The latter also treats the case of equatorial reflections from a single crystal ground to a cylinder. O. P. Hendershot has recently published a method applicable to a crystal of any shape but restricted to crystals of high absorbing power. Absorption effects in Weissenberg photographs have been treated by A. F. Wells and M. J. Buerger. In all these methods the computational labor is great, and the general case has not, to the author's knowledge, been treated. In view of these difficulties the usual procedure is to use a crystal so small as to make absorption negligible (necessitating long exposure) or to hold this unknown factor responsible for poor intensity agreement. A graphical method for treating absorption in a crystal of any size, shape and absorbing power, which has proved useful in the author's work, is here presented.

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Additional Information:© 1939 American Institute of Physics. Received April 11, 1939.
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Gates and Crellin Laboratories of Chemistry707
Issue or Number:8
Record Number:CaltechAUTHORS:20200409-145420220
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Official Citation:The Absorption Factor in Crystal Spectroscopy. Gustav Albrecht. Review of Scientific Instruments 10:8, 221-222; doi: 10.1063/1.1751537
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102467
Deposited By: Tony Diaz
Deposited On:09 Apr 2020 22:13
Last Modified:16 Nov 2021 18:12

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