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Robert F. Stewart
Researcher at Carnegie Mellon University
Publications - 39
Citations - 8604
Robert F. Stewart is an academic researcher from Carnegie Mellon University. The author has contributed to research in topics: Scattering & Charge density. The author has an hindex of 23, co-authored 39 publications receiving 8397 citations.
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Self‐Consistent Molecular‐Orbital Methods. I. Use of Gaussian Expansions of Slater‐Type Atomic Orbitals
TL;DR: In this article, a least square representation of Slater-type atomic orbitals as a sum of Gaussian-type orbitals is presented, where common Gaussian exponents are shared between Slater−type 2s and 2p functions.
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Coherent X‐Ray Scattering for the Hydrogen Atom in the Hydrogen Molecule
TL;DR: In this paper, the x-ray form factors for a bonded hydrogen in the hydrogen molecule have been calculated for a spherical approximation to the bonded atom, and the corresponding complex scattering factors have also been calculated.
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Self‐Consistent Molecular Orbital Methods. IV. Use of Gaussian Expansions of Slater‐Type Orbitals. Extension to Second‐Row Molecules
TL;DR: In this paper, the 3s and 3p Slater-type atomic orbitals are represented by a small number of Gaussian functions and the use of these Gaussian representations in self-consistent molecular orbital calculations is presented.
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Small Gaussian Expansions of Slater‐Type Orbitals
TL;DR: In this article, small Gaussian expansions of Slater-type orbitals by the method of least squares are presented and the least square equations are solved by a full-matrix method.
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Generalized X-Ray Scattering Factors
TL;DR: In this article, generalized x-ray scattering factors from the evaluation of Fourier transforms of atomic-orbital products have been determined from the analysis of X-ray diffraction data.