{"id":{"repo_id":"qu-belfast","oai_identifier":"oai:pure.qub.ac.uk/portal:studenttheses/1197d51e-8cc8-47fc-9481-ab8296339bb1"},"canonical_url":"https://search.dev.ndltd.org/etd/qu-belfast/oai:pure.qub.ac.uk/portal:studenttheses/1197d51e-8cc8-47fc-9481-ab8296339bb1","repository":{"repo_id":"qu-belfast","name":"Queen's University Belfast","base_url":"https://pureadmin.qub.ac.uk/ws/oai"},"display":{"title":"Electronic structure of warm dense matter","abstract":"The electronic structure of warm dense matter has been investigated using absorption spectroscopy by looking at shifts in the K-edge position of shocked compressed parylene-C and potassium chloride. The Vulcan laser facility was used to drive double sided shocks into the embedded chlorine samples creating a warm dense matter state with compressions greater than four times solid density and temperatures of around 10 eV. This resulted in red-shifts of the K-edge energy on the order of 10 eV. Also measured are differences in the edge energy with increasing density between the two types of chlorine samples, demonstrating how the embedded environment can effect the electronic structure of the plasma under warm dense conditions.<br/><br/>The experimental results have been reproduced well by a reformulated version of the Stewart-Pyatt model that takes into consideration dynamical processes by including an additional relaxation energy exchange between the atom and its surrounding plasma when an electron is photo-ionised from the K-shell. In addition to this good agreement with the experimental results is also observed with simulations carried out using density functional theory.","abstract_html":"The electronic structure of warm dense matter has been investigated using absorption spectroscopy by looking at shifts in the K-edge position of shocked compressed parylene-C and potassium chloride. The Vulcan laser facility was used to drive double sided shocks into the embedded chlorine samples creating a warm dense matter state with compressions greater than four times solid density and temperatures of around 10 eV. This resulted in red-shifts of the K-edge energy on the order of 10 eV. Also measured are differences in the edge energy with increasing density between the two types of chlorine samples, demonstrating how the embedded environment can effect the electronic structure of the plasma under warm dense conditions.&lt;br/&gt;&lt;br/&gt;The experimental results have been reproduced well by a reformulated version of the Stewart-Pyatt model that takes into consideration dynamical processes by including an additional relaxation energy exchange between the atom and its surrounding plasma when an electron is photo-ionised from the K-shell. In addition to this good agreement with the experimental results is also observed with simulations carried out using density functional theory.","abstract_has_math":false,"creators":["Bailie, David"],"institution":"Queen's University Belfast","degree_name":"Doctor of Philosophy","degree_level":"Doctoral Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Riley, David","Sarri, Gianluca"],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-7","date_published":"2022-7","updated_at":"2026-07-24T03:56:11Z","subjects":["Warm dense matter","absorption spectroscopy","chlorine K-edge shifts","electronic structure of chlorine","photoionisation","high energy density physics","x-ray spectroscopy"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:pure.qub.ac.uk/portal:studenttheses/1197d51e-8cc8-47fc-9481-ab8296339bb1"],"render_values":[{"text":"oai:pure.qub.ac.uk/portal:studenttheses/1197d51e-8cc8-47fc-9481-ab8296339bb1","href":null,"code":true}]}]},"links":{"outbound_url":"https://pure.qub.ac.uk/en/studentTheses/1197d51e-8cc8-47fc-9481-ab8296339bb1","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Riley, David","Sarri, Gianluca"]},{"key":"dc:creator","label":"Author","values":["Bailie, David"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-7"]},{"key":"dc:date.issued","label":"Date","values":["2022-7"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["School of Mathematics and Physics"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["Queen's University Belfast"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://pure.qub.ac.uk/en/studentTheses/1197d51e-8cc8-47fc-9481-ab8296339bb1"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral Thesis"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["Doctor of Philosophy"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Warm dense matter","absorption spectroscopy","chlorine K-edge shifts","electronic structure of chlorine","photoionisation","high energy density physics","x-ray spectroscopy"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:pure.qub.ac.uk/portal:studenttheses/1197d51e-8cc8-47fc-9481-ab8296339bb1","https://pure.qub.ac.uk/en/studentTheses/1197d51e-8cc8-47fc-9481-ab8296339bb1"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://pure.qub.ac.uk/files/269376398/Kedge_Thesis_Hardbound_David_Bailie.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The electronic structure of warm dense matter has been investigated using absorption spectroscopy by looking at shifts in the K-edge position of shocked compressed parylene-C and potassium chloride. The Vulcan laser facility was used to drive double sided shocks into the embedded chlorine samples creating a warm dense matter state with compressions greater than four times solid density and temperatures of around 10 eV. This resulted in red-shifts of the K-edge energy on the order of 10 eV. Also measured are differences in the edge energy with increasing density between the two types of chlorine samples, demonstrating how the embedded environment can effect the electronic structure of the plasma under warm dense conditions.<br/><br/>The experimental results have been reproduced well by a reformulated version of the Stewart-Pyatt model that takes into consideration dynamical processes by including an additional relaxation energy exchange between the atom and its surrounding plasma when an electron is photo-ionised from the K-shell. In addition to this good agreement with the experimental results is also observed with simulations carried out using density functional theory."]},{"key":"dc:title","label":"Title","values":["Electronic structure of warm dense matter"]}]}],"canonical_facts":{"dc:contributor.advisor":["Riley, David","Sarri, Gianluca"],"dc:creator":["Bailie, David"],"dc:date":["2022-7"],"dc:date.issued":["2022-7"],"dc:description.abstract":["The electronic structure of warm dense matter has been investigated using absorption spectroscopy by looking at shifts in the K-edge position of shocked compressed parylene-C and potassium chloride. The Vulcan laser facility was used to drive double sided shocks into the embedded chlorine samples creating a warm dense matter state with compressions greater than four times solid density and temperatures of around 10 eV. This resulted in red-shifts of the K-edge energy on the order of 10 eV. Also measured are differences in the edge energy with increasing density between the two types of chlorine samples, demonstrating how the embedded environment can effect the electronic structure of the plasma under warm dense conditions.<br/><br/>The experimental results have been reproduced well by a reformulated version of the Stewart-Pyatt model that takes into consideration dynamical processes by including an additional relaxation energy exchange between the atom and its surrounding plasma when an electron is photo-ionised from the K-shell. In addition to this good agreement with the experimental results is also observed with simulations carried out using density functional theory."],"dc:identifier":["oai:pure.qub.ac.uk/portal:studenttheses/1197d51e-8cc8-47fc-9481-ab8296339bb1","https://pure.qub.ac.uk/en/studentTheses/1197d51e-8cc8-47fc-9481-ab8296339bb1"],"dc:identifier.uri":["https://pure.qub.ac.uk/files/269376398/Kedge_Thesis_Hardbound_David_Bailie.pdf"],"dc:language":["eng"],"dc:publisher.department":["School of Mathematics and Physics"],"dc:publisher.institution":["Queen's University Belfast"],"dc:relation.isreferencedby":["https://pure.qub.ac.uk/en/studentTheses/1197d51e-8cc8-47fc-9481-ab8296339bb1"],"dc:subject":["Warm dense matter","absorption spectroscopy","chlorine K-edge shifts","electronic structure of chlorine","photoionisation","high energy density physics","x-ray spectroscopy"],"dc:title":["Electronic structure of warm dense matter"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["Doctoral Thesis"],"dc:type.qualificationname":["Doctor of Philosophy"]},"updated_at":"2026-07-24T03:56:11Z"}