888 citations · 3.7k across the 44 of their papers we have counts for
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physics.atom-ph2007★ 12 cited
A study of the breakdown of the quasi-static approximation at high densities and its effect on the helium-like K ALPHA complex of nickel, iron, and calcium
Justin Oelgoetz, Christopher J. Fontes, Hong Lin Zhang +1
The General Spectral Modeling (GSM) code employs the quasi-static approximation, a standard, low-density methodology that assumes the ionization balance is separable from a determi…
astro-ph2007★ 6 cited
High-temperature behaviour of the helium-like K ALPHA G ratio: the effect of improved recombination rate coefficients for calcium, iron, and nickel
J. Oelgoetz, C. J. Fontes, H. L. Zhang +3
It is shown that above the temperature of maximum abundance, recombination rates into the excited states of He-like ions that are calculated using earlier, more approximate methods…