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Title: Influence of the plasma environment on atomic structure using an ion-sphere model

Abstract

Plasma environment effects on atomic structure are analyzed using various atomic structure codes. To monitor the effect of high free-electron density or low temperatures, Fermi-Dirac and Maxwell-Boltzmann statistics are compared. After a discussion of the implementation of the Fermi-Dirac approach within the ion-sphere model, several applications are considered. In order to check the consistency of the modifications brought here to extant codes, calculations have been performed using the Los Alamos Cowan Atomic Structure (cats) code in its Hartree-Fock or Hartree-Fock-Slater form and the parametric potential Flexible Atomic Code (fac). The ground-state energy shifts due to the plasma effects for the six most ionized aluminum ions have been calculated using the fac and cats codes and fairly agree. For the intercombination resonance line in Fe 22+, the plasma effect within the uniform electron gas model results in a positive shift that agrees with the MCDF value of B. Saha et al.

Authors:
 [1];  [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Centre d'Etudes de Saclay, Cedex (France)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1221808
Alternate Identifier(s):
OSTI ID: 1213945
Report Number(s):
LA-UR-15-23708
Journal ID: ISSN 1050-2947; PLRAAN; TRN: US1600414
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 92; Journal Issue: 3; Journal ID: ISSN 1050-2947
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; atomic structure; ion-sphere; plasma potential; Fermi-Dirac; FAC; CATS

Citation Formats

Belkhiri, Madeny Jean, Fontes, Christopher John, and Poirier, Michel. Influence of the plasma environment on atomic structure using an ion-sphere model. United States: N. p., 2015. Web. doi:10.1103/PhysRevA.92.032501.
Belkhiri, Madeny Jean, Fontes, Christopher John, & Poirier, Michel. Influence of the plasma environment on atomic structure using an ion-sphere model. United States. doi:10.1103/PhysRevA.92.032501.
Belkhiri, Madeny Jean, Fontes, Christopher John, and Poirier, Michel. Thu . "Influence of the plasma environment on atomic structure using an ion-sphere model". United States. doi:10.1103/PhysRevA.92.032501. https://www.osti.gov/servlets/purl/1221808.
@article{osti_1221808,
title = {Influence of the plasma environment on atomic structure using an ion-sphere model},
author = {Belkhiri, Madeny Jean and Fontes, Christopher John and Poirier, Michel},
abstractNote = {Plasma environment effects on atomic structure are analyzed using various atomic structure codes. To monitor the effect of high free-electron density or low temperatures, Fermi-Dirac and Maxwell-Boltzmann statistics are compared. After a discussion of the implementation of the Fermi-Dirac approach within the ion-sphere model, several applications are considered. In order to check the consistency of the modifications brought here to extant codes, calculations have been performed using the Los Alamos Cowan Atomic Structure (cats) code in its Hartree-Fock or Hartree-Fock-Slater form and the parametric potential Flexible Atomic Code (fac). The ground-state energy shifts due to the plasma effects for the six most ionized aluminum ions have been calculated using the fac and cats codes and fairly agree. For the intercombination resonance line in Fe22+, the plasma effect within the uniform electron gas model results in a positive shift that agrees with the MCDF value of B. Saha et al.},
doi = {10.1103/PhysRevA.92.032501},
journal = {Physical Review. A},
number = 3,
volume = 92,
place = {United States},
year = {2015},
month = {9}
}

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Cited by: 4 works
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