1998/11/19 by Matthew D. Jones, Gerardo Ortiz, Gerardo Ortíz +1 · 49 citations
Mathematics · Physics and Astronomy · #Adiabatic process #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Atomic physics #Basis (linear algebra) #Cold Atom Physics and Bose-Einstein Condensates #Dipole #Electron #Excitation #Excited state #Helium #Magnetic dipole #Magnetic field #Mathematics #Physics #Quantum mechanics #Truncation (statistics) #physics.atom-ph #physics.comp-ph
paper · pdf · doi:10.1103/physreva.59.2875
published in Physical Review A 59(4), 2875-2885 (American Physical Society) · 19 pages, 7 figures, 10 tables
arxiv created 1998/11/19 · openalex publication_date 1999/04/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present extensive and accurate calculations for the excited-state spectrum of spin-polarized neutral helium in a range of magnetic field strengths up to 1012 G. Of considerable interest to models of magnetic white dwarf stellar atmospheres, we also present results for the dipole strengths of the low-lying transitions among these states. Our methods rely on a systematically saturated basis set approach to solving the Hartree-Fock self-consistent field equations, combined with an ``exact'' stochastic method to estimate the residual basis set truncation error and electron correlation effects. We also discuss the applicability of the adiabatic approximation to strongly magnetized multielectron atoms.