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What does FAC stand for?

FAC stands for Flexible Atomic Code


This definition appears somewhat frequently

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Samples in periodicals archive:

Electron impact collision strengths, energy levels, oscillator strengths and spontaneous radiative decay rates are calculated for Fe vii using the Flexible Atomic Code.
the 2S(2) 2p(,)(6) 2S(2) 2P(5) 3l, 2s(2)p(6) 3l, 2s(2) 2p(5) 4l, and 2s(2)p(6) 2l configurations of Ni XIX, for which flexible atomic code (FAC) has been adopted.
Fe XVI are computed, over an electron energy range below 570 Ryd, using the Dirac atomic R-matrix code (DARC) and the flexible atomic code (FAC).
Theoretical extreme ultraviolet emission spectra of gadolinium and terbium ions calculated with the Cowan suite of codes and the flexible atomic code (FAC...
necessary atomic data had been calculated by relativistic configuration interaction method with the implementation of Flexible Atomic Code.
pumping of neonlike Fe xvii have been calculated and modeled under free-electron laser excitation conditions using the Flexible Atomic Code.
additional accuracy assessments, particularly for energy levels, analogous calculations have been performed with the Flexible Atomic Code (FAC)...
and flexible atomic code (FAC) have also been employed for comparison purposes. No radiative rates are available in the literature to compare with our results...
The Flexible Atomic Code: Authors: Gu, Ming Feng: Affiliation: AA(382 Via Pueblo Mall, Varian, Stanford University, CA 94305) Publication...
The Flexible Atomic Code Authors. Gu, Ming Feng Abstract. We describe an integrated software package for the calculation of various atomic radiative and...
(Flexible Atomic Code) Data A complete set of collisional and radiative data of atoms from Z=2 (Helium) to Z=14(Silicon)...
FAC (the Flexible Atomic Code) and cFAC; MCDFGME; ChiantyPyis a Python interface to the CHIANTI atomic database for astrophysical spectroscopy;