Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
A new set of relativistic screening constants for the screened hydrogenic model
Year:2011
Research Areas
  • Engineering
Information
Abstract
A new Relativistic Screened Hydrogenic Model 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 a new set of universal screening constants, 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 screening constants 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 screening constants 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.
International
Si
JCR
Si
Title
High Energy Density Physics
ISBN
1574-1818
Impact factor JCR
0
Impact info
Volume
7
Journal number
From page
169
To page
179
Month
SIN MES
Ranking
Participants
  • Autor: M.A. Mendoza (Universidad de Las Palmas de Gran Canarias)
  • Autor: J.G. Rubiano (Universidad de Las Palmas de Gran Canarias)
  • Autor: J.M. Gil (Universidad de Las Palmas de Gran Canarias)
  • Autor: R. Rodríguez (Universidad de Las Palmas de Gran Canarias)
  • Autor: R. Florido (Universidad de Las Palmas de Gran Canarias)
  • Autor: P. Martel (Universidad de Las Palmas de Gran Canarias)
  • Autor: Emilio Minguez Torres (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)