International
Tables for
Crystallography
Volume H
Powder diffraction
Edited by C. J. Gilmore, J. A. Kaduk and H. Schenk

International Tables for Crystallography (2018). Vol. H, ch. 3.6, p. 301
https://doi.org/10.1107/97809553602060000951

## Appendix A3.6.1. Functions for profile shapes

M. Leonia*

aDepartment of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123 Trento, Italy
Correspondence e-mail: Matteo.Leoni@unitn.it

The unit-area Gaussian G(x, ω) and Lorentzian L(x, ω) functions are defined aswhere x is the running variable and ω is the full-width at half-maximum. Based on these definitions, the Voigt and pseudo-Voigt areand respectively, where η is the mixing parameter (ranging between 0 and 1) and wL and wG are the width of the Lorentzian and Gaussian components, respectively.