Dirac R-matrix scattering calculations in support of plasma diagnostics

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/>

Name dc:type.qualificationname

Doctor of Philosophy

Level dc:type.qualificationlevel

Doctoral Thesis

Grantor dc:publisher.institution

Queen's University Belfast

Year dc:date.issued

2021

Author dc:creator

• Dunleavy, Nicole

Advisor dc:contributor.advisor

• Ballance, Connor

• Scattering data
• plasma
• opacity
• collisional
• scattering
• R-Matrix
• atomic structure

Language dc:language

eng

Identifier

oai:pure.qub.ac.uk/portal:studenttheses/4143b054-7ed7-4938-af5d-c4a5c33f31c4

OAI identifier oai:identifier

oai:pure.qub.ac.uk/portal:studenttheses/4143b054-7ed7-4938-af5d-c4a5c33f31c4