ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The elastic electron scattering factors and phases for eleven alkali and halide ionized atoms, Li+, Li2+, Li3+, Na+, K+, Rb+, Cs+, F-, CI-, Br- and I-, have been calculated by the partial wave method for impact energies of 10, 40, 70 and 100 keV. Clementi analytic Hartree-Fock wavefunctions were used except for Li2+ whose wavefunction was hydrogen-like, Li3+ whose potential was purely Coulombic, and Rb+, Cs+, Br- and I- for which potential functions estimated from the X-ray scattering factors were used. The calculated scattering factors and phases for the ionized atoms have been compared with those for neutral atoms in International Tables for X-ray Crystallography [(1974). Vol. IV, pp. 176-269. Birmingham: Kynoch Press]. It has been found that the difference in the scattering phase between the neutral and ionized atom is almost constant except for small s and that the magnitude of the difference for a given valence of the ionized atom and a particular impact energy is nearly independent of the atomic number.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739480000605
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