1971/11/01 by C. S. Lam, Y. P. Varshni · 1 citation
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Nuclear physics research studies
paper · doi:10.1103/physreva.4.1875
openalex publication_date 1971/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Energies of the 1s, 2s, 3s, and 4s states are obtained by a perturbation calculation and by a one-parameter variational calculation for a two-particle system interacting through a static screened Coulomb potential. The variational results are practically identical with those recently obtained by Rogers, Graboske, and Harwood by the numerical integration of the wave equation, except in the region very close to the critical screening.