Papers appear in date order, starting with the most recent. Within a single year, papers are ordered on the first-named member of department and title. Bibliography 1 R. C. Clark and J. S. Reid. The program uses a mathematically exact method for calculating these quantities from given crystal data. Although written for x-ray scattering, the programme is relevant to other scattering provided the underlying assumptions are valid.
Excellent accuracy is obtained for a very wide range of absorption coefficients.
An option within the program permits storing of the calculated geometrical factors for any one orientation of the crystal and scattering vector, so that the absorption can be rapidly recalculated for different values of the absorption constant. This is particularly relevant for energy dispersive scattering. The program can also calculate the absorption in crystals that are only partly illuminated by the X-ray beam.