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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_bs
Name:_atom_type_scat.Gaussian_bs
Definition:
The set of Gaussian exponent coefficients for generating X-ray scattering
factors:
[ b_1, b_2, ... , b_N ].
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_c
Type: Real
Values appear in List context.
Dimension: []
Units: angstrom_squared
Category:
atom_type_scat
