|
International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_atom_type_scat.Gaussian_c
Name:_atom_type_scat.Gaussian_c
Definition:
The Gaussian constant coefficient for generating X-ray scattering factors:
c.
f(s; Z) = c + Sum[a~i~ * exp(-b~i~ * s^2^), i=1:N]
where s = sin(θ)/λ, θ is the diffraction angle and λ is the wavelength
of the incident radiation in angstroms.
See also: _atom_type_scat.gaussian_as
_atom_type_scat.gaussian_bs
Type: Real
Units: none
Category:
atom_type_scat