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Spectrum of Neutral Helium in Strong Magnetic Fields

Matthew D. Jones·Gerardo Ortiz·David M. Ceperley
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Abstract

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 $10^{12}$ 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 multi-electron atoms.

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Matthew D. Jones, Gerardo Ortiz, David M. Ceperley. 1998-11-19. Spectrum of Neutral Helium in Strong Magnetic Fields. https://doi.org/10.1103/physreva.59.2875

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