Completeness of the configuration interaction / close coupling expansion versus the relativistic formalism in R-matrix calculations

Fernández-Menchero, L. and Del Zanna, G. and Badnell, N. R. (2015) Completeness of the configuration interaction / close coupling expansion versus the relativistic formalism in R-matrix calculations. Journal of Physics: Conference Series, 635 (5). 052034. ISSN 1742-6588 (https://doi.org/10.1088/1742-6596/635/5/052034)

[thumbnail of Fernández-Menchero-etal-JPCS2015-configuration-interaction-close-coupling-expansion-versus-the-relativistic-formalism]
Preview
 Text. Filename: Fern_ndez_Menchero_etal_JPCS2015_configuration_interaction_close_coupling_expansion_versus_the_relativistic_formalism.pdf
Final Published Version
License: Creative Commons Attribution 3.0 logo
Download (222kB)| Preview

Abstract

R-matrix calculations have different sources of inaccuracy. We analyze the differences in the final results caused by differences in three aspects of the calculation: the atomic structure of the target, the completeness of the close coupling expansion, and the method used to include relativistic effects in the Hamiltonian. We present the electron-impact excitation of the ion Be-like Al9+ as a case study. We conclude that the completeness of the CI/CC expansion plays the most important role for the reliability of the results, mainly for the most highly-excited levels.

CORE (COnnecting REpositories)