{"id":{"repo_id":"colo-mines","oai_identifier":"oai:repository.mines.edu:11124/15512"},"canonical_url":"https://search.dev.ndltd.org/etd/colo-mines/oai:repository.mines.edu:11124/15512","repository":{"repo_id":"colo-mines","name":"Colorado School of Mines","base_url":"https://repository.mines.edu/server/oai/request"},"display":{"title":"Towards nuclear excitation via electron capture in an electron beam ion trap","abstract":"Nuclear Excitation via Electron Capture (NEEC) is the inverse process of internal electron conversion, where a free electron is captured into an atomic vacancy simultaneously exciting the nucleus to a higher-energy state. This process occurs naturally in hot astrophysical environments, and can excite nuclei in these isomeric states to shorter-lived states that would decay at a much faster rate than under terrestrial conditions, thus affecting reaction flows or survival rate of nuclei. Since NEEC is a resonant process, experimental access in the lab to study these cases requires strong atomic charge-state control over the sample, as well as careful selection and preparation of nuclear states that may be compatible with efficient electron recombination. Using an open-geometry electron beam ion trap (EBIT) in the TITAN experiment at the TRIUMF facility we are able to perform these studies with a high level of control and sensitivity. In this thesis a method of triggering NEEC in $^{129m}$Sb is discussed along with the development of the experimental hardware to perform the measurements. This thesis also presents new high-precision mass measurements for $^{33}$Mg, $^{34}$Mg, $^{35}$Mg, and $^{33}$Na. These mass measurements performed using the TITAN Multi-Reflection Time-of-flight Mass Spectrometer (MR-TOF-MS) to demonstrate the high resolving power of this instrument along with its potential use for reducing contamination in the rare isotope beam prior to injection into the EBIT.","abstract_html":"Nuclear Excitation via Electron Capture (NEEC) is the inverse process of internal electron conversion, where a free electron is captured into an atomic vacancy simultaneously exciting the nucleus to a higher-energy state. This process occurs naturally in hot astrophysical environments, and can excite nuclei in these isomeric states to shorter-lived states that would decay at a much faster rate than under terrestrial conditions, thus affecting reaction flows or survival rate of nuclei. Since NEEC is a resonant process, experimental access in the lab to study these cases requires strong atomic charge-state control over the sample, as well as careful selection and preparation of nuclear states that may be compatible with efficient electron recombination. Using an open-geometry electron beam ion trap (EBIT) in the TITAN experiment at the TRIUMF facility we are able to perform these studies with a high level of control and sensitivity. In this thesis a method of triggering NEEC in <span class=\"etd-inline-math\"><sup>129m</sup></span>Sb is discussed along with the development of the experimental hardware to perform the measurements. This thesis also presents new high-precision mass measurements for <span class=\"etd-inline-math\"><sup>33</sup></span>Mg, <span class=\"etd-inline-math\"><sup>34</sup></span>Mg, <span class=\"etd-inline-math\"><sup>35</sup></span>Mg, and <span class=\"etd-inline-math\"><sup>33</sup></span>Na. These mass measurements performed using the TITAN Multi-Reflection Time-of-flight Mass Spectrometer (MR-TOF-MS) to demonstrate the high resolving power of this instrument along with its potential use for reducing contamination in the rare isotope beam prior to injection into the EBIT.","abstract_has_math":true,"creators":["Ringuette, Jon"],"institution":"Colorado School of Mines. Arthur Lakes Library","degree_name":"Doctor of Philosophy (Ph.D.)","degree_level":"Doctoral","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":["Leach, Kyle"],"committee_chairs":[],"committee_members":["Greife, Uwe","Wiencke, Lawrence","Shafer, Jenifer C.","Sarazin, Frederic"],"year":2022,"date_issued":"2022","date_published":"2022","updated_at":"2026-07-24T01:42:11Z","subjects":["EBIT","MR-TOF","NEEC"],"languages":["eng","English"],"rights":["Copyright of the original work is retained by the author."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["T 9407"],"render_values":[{"text":"T 9407","href":null,"code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/11124/15512","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Leach, Kyle"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Greife, Uwe","Wiencke, Lawrence","Shafer, Jenifer C.","Sarazin, Frederic"]},{"key":"dc:creator","label":"Author","values":["Ringuette, Jon"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2022-11-21T21:34:36Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2022-11-21T21:34:36Z"]},{"key":"dc:date.issued","label":"Date","values":["2022"]},{"key":"dc:publisher","label":"Institution","values":["Colorado School of Mines. 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This process occurs naturally in hot astrophysical environments, and can excite nuclei in these isomeric states to shorter-lived states that would decay at a much faster rate than under terrestrial conditions, thus affecting reaction flows or survival rate of nuclei. Since NEEC is a resonant process, experimental access in the lab to study these cases requires strong atomic charge-state control over the sample, as well as careful selection and preparation of nuclear states that may be compatible with efficient electron recombination. Using an open-geometry electron beam ion trap (EBIT) in the TITAN experiment at the TRIUMF facility we are able to perform these studies with a high level of control and sensitivity. In this thesis a method of triggering NEEC in $^{129m}$Sb is discussed along with the development of the experimental hardware to perform the measurements. This thesis also presents new high-precision mass measurements for $^{33}$Mg, $^{34}$Mg, $^{35}$Mg, and $^{33}$Na. These mass measurements performed using the TITAN Multi-Reflection Time-of-flight Mass Spectrometer (MR-TOF-MS) to demonstrate the high resolving power of this instrument along with its potential use for reducing contamination in the rare isotope beam prior to injection into the EBIT."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["born digital","doctoral dissertations"]},{"key":"dc:title","label":"Title","values":["Towards nuclear excitation via electron capture in an electron beam ion trap"]}]}],"canonical_facts":{"dc:contributor.advisor":["Leach, Kyle"],"dc:contributor.committeemember":["Greife, Uwe","Wiencke, Lawrence","Shafer, Jenifer C.","Sarazin, Frederic"],"dc:creator":["Ringuette, Jon"],"dc:date.accessioned":["2022-11-21T21:34:36Z"],"dc:date.available":["2022-11-21T21:34:36Z"],"dc:date.issued":["2022"],"dc:description":["Includes bibliographical references.","2022 Summer."],"dc:description.abstract":["Nuclear Excitation via Electron Capture (NEEC) is the inverse process of internal electron conversion, where a free electron is captured into an atomic vacancy simultaneously exciting the nucleus to a higher-energy state. This process occurs naturally in hot astrophysical environments, and can excite nuclei in these isomeric states to shorter-lived states that would decay at a much faster rate than under terrestrial conditions, thus affecting reaction flows or survival rate of nuclei. Since NEEC is a resonant process, experimental access in the lab to study these cases requires strong atomic charge-state control over the sample, as well as careful selection and preparation of nuclear states that may be compatible with efficient electron recombination. Using an open-geometry electron beam ion trap (EBIT) in the TITAN experiment at the TRIUMF facility we are able to perform these studies with a high level of control and sensitivity. In this thesis a method of triggering NEEC in $^{129m}$Sb is discussed along with the development of the experimental hardware to perform the measurements. This thesis also presents new high-precision mass measurements for $^{33}$Mg, $^{34}$Mg, $^{35}$Mg, and $^{33}$Na. These mass measurements performed using the TITAN Multi-Reflection Time-of-flight Mass Spectrometer (MR-TOF-MS) to demonstrate the high resolving power of this instrument along with its potential use for reducing contamination in the rare isotope beam prior to injection into the EBIT."],"dc:format.medium":["born digital","doctoral dissertations"],"dc:identifier":["Ringuette_mines_0052E_12464.pdf","T 9407"],"dc:identifier.uri":["https://hdl.handle.net/11124/15512"],"dc:language":["English"],"dc:language.iso":["eng"],"dc:publisher":["Colorado School of Mines. Arthur Lakes Library"],"dc:rights":["Copyright of the original work is retained by the author."],"dc:subject":["EBIT","MR-TOF","NEEC"],"dc:title":["Towards nuclear excitation via electron capture in an electron beam ion trap"],"dc:type":["Text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Doctoral"],"thesis:degree_name":["Doctor of Philosophy (Ph.D.)"],"thesis:institution_name":["Colorado School of Mines"]},"updated_at":"2026-07-24T01:42:11Z"}