activity
20022016
most citedX-ray absorption via K-alpha resonance complexes in oxygen ions

34 citations · 84 across the 6 of their papers we have counts for

collaborators

6 papers

cond-mat.mtrl-sci2016★ 18 cited

Structural characterisation of tin fluorophosphate glasses doped with Er2O3

J. Trimble, R. Golovchak, J. Oelgoetz +2

EXAFS and confocal Raman microscopy have been used to study 50SnF2.(20-x)SnO.30P2O5.xEr2O3 (x=0, 0.1, 0.25) glasses. EXAFS data reveal an average coordination of Sn to O of 1.5 in…

astro-ph2008★ 13 cited

On the importance of satellite lines to the He-like K ALPHA complex and the G ratio for calcium, iron, and nickel

J. Oelgoetz, C. J. Fontes, H. L. Zhang +2

New, more detailed calculations of the emission spectra of the He-like K ALPHA complex of calcium, iron and nickel have been carried out using data from both distorted-wave and R-m…

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…

astro-ph2003★ 34 cited

X-ray absorption via K-alpha resonance complexes in oxygen ions

Anil K. Pradhan, Guo Xin Chen, Franck Delahaye +2

The K-alpha resonance complexes in oxygen ions O I - O VI are theoretically computed and resonance oscillator strengths and wavelengths are presented. The highly resolved photoioni…

astro-ph2002★ 1 cited

X-Ray Resonance Opacity of Oxygen and Iron in AGN MCG--6-30-15

Anil K. Pradhan, Guo-Xin Chen, Franck Delahaye +2

Theoretical differential oscillator strengths related to monochromatic opacity due to K- and L-shell absorption from oxygen and iron ions are directly compared with the Chandra and…