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oai:figshare.com:article/32631912 2026-10-01T17:15:41Z portal_1172 item_type_8 month_year_10_2026

Dirac R-matrix scattering calculations in support of plasma diagnostics Nicole Dunleavy (24164706) PUREID: 252228325 Scattering data plasma opacity collisional scattering R-Matrix atomic structure The atomic structure of singly ionised nickel (Ni II), singly ionised tungsten (W II) and doubly ionised germanium (Ge III) are thoroughly analysed and subsequently incorporated into scattering calculations. W II is needed to ensure reliable erosion diagnostics when investigating the influx of impurities into magnetically confined fusion plasmas. The atomic data for Ni II and Ge III provide more interest for astrophysical plasmas. In order to accurately represent the collisional processes for these species, scattering calculations are carried out using the relativistic Dirac R-matrix (DARC) and the semi-relativistic Breit-Pauli (BP) R-matrix codes. The results from these calculations, along with the atomic structure data, are incorporated into collisional-radiative model programs. These collisional-radiative models provide great insight for plasma diagnostics and spectral line identification.<br><br><br> 2026-10-01T17:15:41Z Text Thesis 10.17034/32631912.v1 https://figshare.com/articles/thesis/Dirac_R-matrix_scattering_calculations_in_support_of_plasma_diagnostics/32631912 All Rights Reserved