A new set of relativistic screening constants for the screened hydrogenic model

Mendoza, M.A. and Garcia Rubiano, Jesus and Gil, J.M. and Rodríguez, Rafael and Florido, Ricardo and Martel, Pablo and Mínguez Torres, Emilio (2011). A new set of relativistic screening constants for the screened hydrogenic model. "High Energy Density Physics", v. 7 (n. 3); pp. 169-179. ISSN 1574-1818. https://doi.org/10.1016/j.hedp.2011.04.006.

Description

Title: A new set of relativistic screening constants for the screened hydrogenic model
Author/s:
  • Mendoza, M.A.
  • Garcia Rubiano, Jesus
  • Gil, J.M.
  • Rodríguez, Rafael
  • Florido, Ricardo
  • Martel, Pablo
  • Mínguez Torres, Emilio
Item Type: Article
Título de Revista/Publicación: High Energy Density Physics
Date: September 2011
ISSN: 1574-1818
Volume: 7
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

AnewRelativisticScreenedHydrogenicModel has been developed to calculate atomic data needed to compute the optical and thermodynamic properties of high energy density plasmas. The model is based on anewset of universal screeningconstants, including nlj-splitting that has been obtained by fitting to a large database of ionization potentials and excitation energies. This database was built with energies compiled from the National Institute of Standards and Technology (NIST) database of experimental atomic energy levels, and energies calculated with the Flexible Atomic Code (FAC). The screeningconstants have been computed up to the 5p3/2 subshell using a Genetic Algorithm technique with an objective function designed to minimize both the relative error and the maximum error. To select the best set of screeningconstants some additional physical criteria has been applied, which are based on the reproduction of the filling order of the shells and on obtaining the best ground state configuration. A statistical error analysis has been performed to test the model, which indicated that approximately 88% of the data lie within a ±10% error interval. We validate the model by comparing the results with ionization energies, transition energies, and wave functions computed using sophisticated self-consistent codes and experimental data.

More information

Item ID: 11165
DC Identifier: http://oa.upm.es/11165/
OAI Identifier: oai:oa.upm.es:11165
DOI: 10.1016/j.hedp.2011.04.006
Deposited by: Memoria Investigacion
Deposited on: 26 Jun 2012 09:54
Last Modified: 20 Apr 2016 19:19
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM