Definition:
This item gives the scattering factor for the core electrons
of the atom specified in _atom_rho_multipole_atom_label as a
function of sin(theta)/lambda. The text should contain only a
table of two columns, the first giving the value of
sin(theta)/lambda, the second giving the X-ray scattering factor
at this point in reciprocal space.
The atomic core scattering factors are used in least-squares
fitting of the items in _atom_rho_multipole_coeff_* and
_atom_rho_multipole_kappa_* to experimental X-ray structure
factors [see for example Coppens (1997)]. This item enables
them to be supplied in the form of a numerical table. Normally
they originate from atomic orbital analytic wavefunctions
such as those tabulated by Clementi & Roetti (1974).
Ref: Clementi, E. & Roetti, C. (1974). At. Data Nucl. Data
Tables, 14, 177-478.
Coppens, P. (1997). X-ray charge densities and
chemical bonding. Oxford University Press.
Appears in list containing _atom_rho_multipole_atom_label
Type: char
Category: atom_rho_multipole
Copyright © 2005 International Union of Crystallography