Relativistic radiatively damped R-matrix calculation of the electron-impact excitation of W46+

C P Ballance, D C Griffin

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81 Citations (Scopus)


The current design plans for the International Thermonuclear\nExperimental Reactor ( ITER) call for tungsten to be employed for\ncertain plasma facing components in the divertor region. Thus, accurate\natomic collision data are needed for emission modelling of tungsten.\nElectron-impact excitation and radiative rates are of particular\nimportance for Ni-like W, since this ion emits some of the most intense\nspectral lines of all ionization stages. We report on a fully\nrelativistic 115-level R-matrix calculations of W46+, which includes the\neffects of radiation damping. Although radiation damping is very\nimportant in most highly ionized species, its effects are reduced in\nthis case because of the closed-shell Ni-like ground state. The rates\nfrom these relativistic atomic calculations will be employed for\ncollisional-radiative modelling of this ion.
Original languageEnglish
Pages (from-to)3617-3628
Number of pages12
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Issue number17
Publication statusPublished - Sep 2006

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