60 citations · 677 across the 102 of their papers we have counts for
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Some properties of Wigner coefficients: non-trivial zeros and connections to hypergeometric functions
Jean-Christophe Pain
The contribution of Jacques Raynal to angular-momentum theory is highly valuable. In the present article, I intend to recall the main aspects of his work related to Wigner sym…
Optimized recursion relation for the computation of partition functions in the superconfiguration approach
Jean-Christophe Pain, Franck Gilleron, Brian G. Wilson
Partition functions of a canonical ensemble of non-interacting bound electrons are a key ingredient of the super-transition-array approach to the computation of radiative opacity.…
Analytical and numerical expressions for the number of atomic configurations contained in a supershell
Jean-Christophe Pain, Michel Poirier
We present three explicit formulas for the number of electronic configurations in an atom, i.e. the number of ways to distribute electrons in subshells of respective degene…
Expression of relativistic expectation values of powers of in terms of Clebsch-Gordan coefficients
Jean-Christophe Pain
It is shown that, in the relativistic hydrogenic approximation, expectation values of the type can be expressed in terms of Clebsch-Gordan coef…
Super-transition-array calculations for synthetic spectra and opacity of high-density, high-temperature germanium plasmas
Teck-Ghee Lee, W. Jarrah, D. Benredjem +6
The synthetic emission spectra and opacity of high-density, high-temperature germanium (Z=32) plasma from super-transition-array (STA) calculations are presented. The viability of…
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…