http://hdl.handle.net/10362/2468 Wed, 19 Jun 2013 01:39:42 GMT 2013-06-19T01:39:42Z http://hdl.handle.net/10362/2506 Title: Production and decay of Sulphur excited species in a ECRIS plasma Authors: Martins, Maria Conceição; Marques, José Pires; Costa, Ana Maria; Santos, José Paulo; Parente, Fernando; Schlesser, Sophie; Le Bigot, Eric-Olivier; Indelicato, Paul Abstract: The most important processes for the creation of S12+ to S14+ ions excited states from the ground configurations of S9+ to S14+ ions in an electron cyclotron resonance ion source, leading to the emission of K X-ray lines, are studied. Theoretical values for inner-shell excitation and ionization cross sections, including double KL and triple KLL ionization, transition probabilities and energies for the deexcitation processes, are calculated in the framework of the multi-configuration Dirac-Fock method. With reasonable assumptions about the electron energy distribution, a theoretical K$\alpha$ X-ray spectrum is obtained, which is compared to recent experimental data. Thu, 01 Jan 2009 00:00:00 GMT http://hdl.handle.net/10362/2506 2009-01-01T00:00:00Z http://hdl.handle.net/10362/2478 Title: QED and relativistic corrections in superheavy elements Authors: Indelicato, Paul; Santos, José Paulo; Boucard, Stephan; Desclaux, Jean-Paul Abstract: In this paper we review the different relativistic and QED contributions to energies, ionic radii, transition probabilities and Landé g-factors in super-heavy elements, with the help of the MultiConfiguration Dirac-Fock method (MCDF). The effects of taking into account the Breit interaction to all orders by including it in the self-consistent field process are demonstrated. State of the art radiative corrections are included in the calculation and discussed. We also study the non-relativistic limit of MCDF calculation and find that the non-relativistic offset can be unexpectedly large. Mon, 01 Jan 2007 00:00:00 GMT http://hdl.handle.net/10362/2478 2007-01-01T00:00:00Z