The Absorption Displacement in X-Ray Diffraction by Cylindrical Samples
- 1 October 1945
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 16 (10) , 614-620
- https://doi.org/10.1063/1.1707511
Abstract
In the precision determination of lattice constants from back reflection Debye‐Scherrer patterns, one of the systematic errors arises from the effect of absorption in the sample. The magnitude and form of the error is calculated for a cylindrical sample, for both parallel and diverging primary beams, and for a representative variety of values of the absorption coefficient. Calling 2φ the back scattering angle (φ=90−θ), it is found that the error in φ caused by absorption can be set proportional to φ. The form of the absorption correction allows it to be lumped in with the other systematic errors for a linear extrapolation according to either Δd/d =Kφ tan φ or Δd/d=K sin2 φ. There is some preference for the former.This publication has 2 references indexed in Scilit:
- Precision Lattice Constants from X-Ray Powder PhotographsReview of Scientific Instruments, 1935
- A method for deducing accurate values of the lattice spacing from X-ray powder photographs taken by the Debye-Scherrer methodProceedings of the Physical Society, 1932