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Ian P. Grant
Researcher at University of Oxford
Publications - 130
Citations - 9775
Ian P. Grant is an academic researcher from University of Oxford. The author has contributed to research in topics: Electron & Dirac (software). The author has an hindex of 39, co-authored 126 publications receiving 9112 citations. Previous affiliations of Ian P. Grant include University of Cambridge & Atlas Computer Laboratory.
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GRASP: A general-purpose relativistic atomic structure program
TL;DR: The Oxford MCP/MCDF and MCBP/BENA packages have been rewritten in FORTRAN 77 and combined in the new code, GRASP, which is more versatile than its predecessors, contains more stable and accurate numerical procedures and a simplified but more flexible interface.
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GRASP92: a package for large-scale relativistic atomic structure calculations
TL;DR: In this paper, a suite of programs for multiconfiguration or configuration-interaction relativistic atomic structure calculations with large configuration state function lists is described, where atomic orbitals are taken to be four-component spinors.
Journal ArticleDOI
Relativistic calculation of atomic structures.
TL;DR: In this article, the state of the art in relativistic calculation of atomic structures is surveyed and the theory is modelled on the practice in non-relativistic calculations, using many-particle wave functions built from Dirac central field spinors.
Journal ArticleDOI
An atomic multiconfigurational Dirac-Fock package
Book
Relativistic quantum theory of atoms and molecules
TL;DR: Relativity in atomic and molecular physics is discussed in detail in this article, where the Dirac Equation is used to describe the wave equations for free particles in the quantum electrodynamics.