Dielectronic recombination of lanthanide and low ionization state tungsten ions : W13+ - W+
Preval, S. P. and Badnell, N. R. and O'Mullane, M. G. (2018) Dielectronic recombination of lanthanide and low ionization state tungsten ions : W13+ - W+. Journal of Physics B: Atomic, Molecular and Optical Physics, 52 (2). 025201. ISSN 0953-4075 (https://doi.org/10.1088/1361-6455/aaf3f4)
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Abstract
The experimental thermonuclear reactor, ITER, is currently being constructed in Cadarache, France. The reactor vessel will be constructred with a beryllium coated wall, and a tungsten coated divertor. As a plasma-facing component, the divertor will be under conditions of extreme temperature, resulting in the sputtering of tungsten impurities into the main body plasma. Modelling and understanding the potential cooling effects of these impurities requires detailed collisional-radiative modelling. These models require a wealth of atomic data for the various atomic species in the plasma. In particular, partial, final-state resolved dielectronic/radiative recombination (DR/RR) rate coefficients for tungsten are required. In this manuscript, we present our calculations of detailed DR/RR rate coefficients for the lanthanide-like, and low ionization stages of tungsten, spanning charge states W$^{13+}$ to W$^{1+}$. The calculations presented here constitutes the first detailed exploration of such low ionization state tungsten ions. We are able to reproduce the general trend of calculations performed by other authors, but find significant differences ours and their DR rate coefficients, especially at the lowest temperatures considered.
ORCID iDs
Preval, S. P., Badnell, N. R. ORCID: https://orcid.org/0000-0001-7418-7996 and O'Mullane, M. G. ORCID: https://orcid.org/0000-0002-2160-4546;-
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Item type: Article ID code: 66230 Dates: DateEvent14 December 2018Published26 November 2018AcceptedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 27 Nov 2018 15:31 Last modified: 30 Nov 2024 14:10 URI: https://strathprints.strath.ac.uk/id/eprint/66230