@article{420a233a296240f89b5253b6ccdb001a,
title = "All-Order Full-Coulomb Quantum Spectral Line-Shape Calculations",
abstract = "Understanding how atoms interact with hot dense matter is essential for astrophysical and laboratory plasmas. Interactions in high-density plasmas broaden spectral lines, providing a rare window into interactions that govern, for example, radiation transport in stars. However, up to now, spectral line-shape theories employed at least one of three common approximations: second-order Taylor treatment of broadening operator, dipole-only interactions between atom and plasma, and classical treatment of perturbing electrons. In this Letter, we remove all three approximations simultaneously for the first time and test the importance for two applications: neutral hydrogen and highly ionized magnesium and oxygen. We found 15%-50% change in the spectral line widths, which are sufficient to impact applications including white-dwarf mass determination, stellar-opacity research, and laboratory plasma diagnostics.",
author = "Gomez, {T. A.} and T. Nagayama and Cho, {P. B.} and Zammit, {M. C.} and Fontes, {C. J.} and Kilcrease, {D. P.} and I. Bray and I. Hubeny and Dunlap, {B. H.} and Montgomery, {M. H.} and Winget, {D. E.}",
note = "Funding Information: We would like to thank S. B. Hansen and J. E. Bailey and K. Beckwith and C. Iglesias for comments on the Letter. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy{\textquoteright}s National Nuclear Security Administration under Award No. DE-NA-0003525. The work of T. G. and T. N. was performed under a Laboratory Directed Research and Development program at Sandia National Laboratories. The work of M. Z., C. F., and D. K. was carried out under the auspices of the U.S. Department of Energy by Los Alamos National Laboratory under Award No. 89233218CNA000001. P. C., B. D., M. H. M., and D. E. W. acknowledge support from the U.S. Department of Energy under Award No. DR-SC0010623 and the Wootton Center for Astrophysical Plasma Properties under the U.S. Department of Energy collaborative agreement DE-NA0003843. I. B. acknowledges the Australian Research Council and the support of the National Computer Infrastructure and the Pawsey Supercomputer Centre. The views expressed in the article do not necessarily represent the views of the U.S. Department of Energy or the U.S. Government. Publisher Copyright: {\textcopyright} 2021 American Physical Society. ",
year = "2021",
month = dec,
day = "3",
doi = "10.1103/PhysRevLett.127.235001",
language = "English (US)",
volume = "127",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "23",
}