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DIRAC–FOCK ATOMIC ELECTRONIC STRUCTURE CALCULATIONS USING DIFFERENT NUCLEAR CHARGE DISTRIBUTIONS

✍ Scribed by L. Visscher; K.G. Dyall


Book ID
102965530
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
682 KB
Volume
67
Category
Article
ISSN
0092-640X

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✦ Synopsis


Numerical Hartree-Fock calculations based on the Dirac-Coulomb Hamiltonian for the first 109 elements of the periodic table are presented. The results give the total electronic energy, as a function of the nuclear model that is used, for four different models of the nuclear charge distribution. The main purpose of the calculations is to provide a set of benchmark results for basis set calculations that use a finite size nuclear model.


📜 SIMILAR VOLUMES


The use of gaussian nuclear charge distr
✍ O. Visser; P.J.C. Aerts; D. Hegarty; W.C. Nieuwpoort 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 416 KB

It is demonstrated that the use of a Gaussian charge distribution to represent the nucleus is advantageous in relativistic quantum chemical basis set expansion calculations. It removes the singularity at the origin of the Dirac wavefunction, leading to a more rapid convergence of the ground-state en