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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
_refine_ls.weighting_details
Name:_refine_ls.weighting_details
Aliases:
_refine_ls_weighting_details
_refine.ls_weighting_details
Definition:
Description of special aspects of the weighting scheme used in the
least-squares refinement. Used to describe the weighting when the
value of _refine_ls.weighting_scheme is specified as 'calc'.
Example:;
Sigdel model of Konnert-Hendrickson:
Sigdel = Afsig + Bfsig*(sin(θ)/λ - 1/6)
Afsig = 22.0, Bfsig = 150.0 at the beginning of refinement.
Afsig = 16.0, Bfsig = 60.0 at the end of refinement.
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Type: Text
Category:
refine_ls
