60 citations · 342 across the 26 of their papers we have counts for
15 papers · 1 filter
Electron broadening operator including penetrating collisions for hydrogen
Jean-Christophe Pain, Franck Gilleron
The expression of the electron broadening operator including the effect of penetrating collisions, i.e. for which the incoming electron enters the extent of bound-electron wavefunc…
Modeling penetrating collisions in the standard line broadening impact theory for hydrogen
Jean-Christophe Pain, Franck Gilleron
Spectral lines emitted by plasmas provide information about the thermodynamic conditions, the degree of randomness or the interactions prevailing in the medium. Collisions by plasm…
A project based on Multi-Configuration Dirac-Fock calculations for plasma spectroscopy
Maxime Comet, Jean-Christophe Pain, Franck Gilleron +1
We present a project dedicated to hot plasma spectroscopy based on a Multi-Configuration Dirac-Fock (MCDF) code, initially developed by J. Bruneau. The code is briefly described an…
Statistical properties of levels and lines in complex spectra
Jean-Christophe Pain, Franck Gilleron
We review recent developments of the statistical properties of complex atomic spectra, based on the pioneering work of Claire Bauche-Arnoult and Jacques Bauche. We discuss several…
Comment on "Large enhancement in high-energy photoionization of Fe XVII and missing continuum plasma opacity"
C. Blancard, J. Colgan, Ph. Cossé +12
Recent R-matrix calculations claim to produce a significant enhancement in the opacity of Fe XVII due to atomic core excitations [S. N. Nahar & A.K. Pradhan, Phys. Rev. Letters 116…
K-shell spectroscopy in hot plasmas: Stark effect, Breit interaction and QED corrections
Jean-Christophe Pain, Franck Gilleron, Maxime Comet +1
The broadening of lines by Stark effect is widely used for inferring electron density and temperature in plasmas. Stark-effect calculations often rely on atomic data (transition ra…
Accounting for highly excited states in detailed opacity calculations
Jean-Christophe Pain, Franck Gilleron
In multiply-charged ion plasmas, a significant number of electrons may occupy high-energy orbitals. These "Rydberg" electrons, when they act as spectators, are responsible for a nu…
The Hybrid Detailed / Statistical Opacity Code SCO-RCG: New Developments and Applications
Jean-Christophe Pain, Franck Gilleron, Quentin Porcherot +1
We present the hybrid opacity code SCO-RCG which combines statistical approaches with fine-structure calculations. Radial integrals needed for the computation of detailed transitio…
The hybrid opacity code SCO-RCG: recent developments
Jean-Christophe Pain, Franck Gilleron, Quentin Porcherot +1
Absorption and emission spectra of multicharged-ion plasmas contain a huge number of electron configurations and electric-dipolar lines, which can be handled by global methods. How…
Description of anomalous Zeeman patterns in stellar astrophysics
Jean-Christophe Pain, Franck Gilleron
The influence of a magnetic field on the broadening of spectral lines and transition arrays in complex spectra is investigated. The anomalous absorption or emission Zeeman pattern…
Statistics of electric-quadrupole lines in atomic spectra
Jean-Christophe Pain, Franck Gilleron, Jacques Bauche +1
In hot plasmas, a temperature of a few tens of eV is sufficient for producing highly stripped ions where multipole transitions become important. At low density, the transitions fro…
Characterization of anomalous Zeeman patterns in complex atomic spectra
Jean-Christophe Pain, Franck Gilleron
The modeling of complex atomic spectra is a difficult task, due to the huge number of levels and lines involved. In the presence of a magnetic field, the computation becomes even m…
Generating functions for canonical systems of fermions
Jean-Christophe Pain, Franck Gilleron, Quentin Porcherot
The method proposed by Pratt to derive recursion relations for systems of degenerate fermions [Phys. Rev. Lett. 84, 4255 (2000), arXiv:nucl-th/9905055] relies on diagrammatic techn…
A consistent approach for mixed detailed and statistical calculation of opacities in hot plasmas
Quentin Porcherot, Jean-Christophe Pain, Franck Gilleron +1
Absorption and emission spectra of plasmas with multicharged-ions contain transition arrays with a huge number of coalescent electric-dipole (E1) lines, which are well suited for t…
Jensen-Feynman approach to the statistics of interacting electrons
Jean-Christophe Pain, Franck Gilleron, Gerald Faussurier
Faussurier et al. [Phys. Rev. E 65, 016403 (2001)] proposed to use a variational principle relying on Jensen-Feynman (or Gibbs-Bogoliubov) inequality in order to optimize the accou…