Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

On the importance of inner-shell transitions for opacity calculations

Badnell, N.R. and Seaton, M.J. (2003) On the importance of inner-shell transitions for opacity calculations. Journal of Physics B: Atomic, Molecular and Optical Physics, 36 (21). pp. 4367-4385. ISSN 0953-4075

[img]
Preview
PDF (strathprints002986.pdf)
strathprints002986.pdf - Accepted Author Manuscript

Download (265kB) | Preview

Abstract

For high temperatures and densities, stellar opacities obtained from the Opacity Project (OP) were smaller than those obtained from the OPAL project. Iglesias and Rogers (1995 Astrophys. J. 443 469) suggested that the discrepancy was due to the omission by OP of important atomic inner-shell processes, and considered in detail results for a mixture of six elements: H, He, C, O, S and Fe. Extensive new inner-shell data have now been computed using the code AUTOSTRUCTURE. It is shown that the inclusion of these data in the OP work gives opacities for the six-element mix which are in much closer agreement with those from OPAL. We also discuss a number of problems relating to the calculation of opacities and of equations of state for dense plasmas.