Visualization of electron correlation in a series of helium S states

On the eigenfunctions of many‐particle systems in quantum mechanics

Tosio Kato · Communications on Pure and Applied Mathematics · 1957 · 2K citations

Natural Sciences, Physics, Mathematical Physics +13

Ground State of Two-Electron Atoms

C. L. Pekeris · Physical Review · 1958 · 1.1K citations

Natural Sciences, Physics, Computational Physics +9

Comparison of doubly-excited helium energy levels, isoelectronic series, autoionization lifetimes, and group-theoretical configuration-mixing predictions with large-configuration-interaction calculations and experimental spectra

David R. Herrick, Oktay Si̇nanoğlu · Physical review. A, General physics · 1975 · 447 citations

Natural Sciences, Physics, Atomic Physics +16

Classification of Two-Electron Excitation Levels of Helium

J. Cooper, U. Fano, F. Prats · Physical Review Letters · 1963 · 393 citations

Natural Sciences, Astronomy, Physics +14

Fundamental properties of Hamiltonian operators of Schrödinger type

Tosio Kato · Transactions of the American Mathematical Society · 1951 · 371 citations · Full text

Natural Sciences, Mathematics, Physics +16