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[{"key": "dc.contributor.advisor", "value": "de Groote, Ruben", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kujanp\u00e4\u00e4, Sonja", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2020-07-30T07:31:43Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2020-07-30T07:31:43Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2020", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/71283", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4 pro gradu-tutkielma koostuu kahdesta osasta. Ensimm\u00e4isess\u00e4 osassa stabiilin ytterbiumin magneettinen oktupolimomentti m\u00e4\u00e4ritet\u00e4\u00e4n kollineaarista laserspektroskopiaa (CLS) ja nopeaa atomisuihkua k\u00e4ytt\u00e4en. Mittaus suoritetaan IGISOL-laitteistolla (Ion-Guide Isotope Separator On-Line) Jyv\u00e4skyl\u00e4n Yliopiston kiihdytinlaboratoriossa. 173-Yb:n metastabiilin tilan ylihienokertoimet mitataan k\u00e4ytt\u00e4en kolmea erilaista optista dipolisiirtym\u00e4\u00e4. Mitatusta ylihienospektrist\u00e4 m\u00e4\u00e4ritet\u00e4\u00e4n dipoli-, kvadrupoli ja oktupolikertoimet joista saadaan vastaavat ytimen momentit ydinteorian avulla. \nTutkielman toinen osa tehd\u00e4\u00e4n CERN:iss\u00e4 ISOLDE:lla (Isotope Separator On-Line DEvice), jossa kehitet\u00e4\u00e4n moniheijastavan lentoaikamassaspektrometrin (MR-ToF) ja CLS:an yhdist\u00e4v\u00e4\u00e4 Multi Ion Reflection Apparatus for CLS (MIRACLS) -laitteistoa. MIRACLS k\u00e4ytt\u00e4\u00e4 MR-ToF:ia ioniloukkuna laserin ja ionien v\u00e4lisen vuorovaikutusajan pident\u00e4miseksi. T\u00e4st\u00e4 johtuu populaation pumppautuminen pois kiinnostuksen kohteena olevalta ylihienotilalta, jolloin havaittu fluoresenssi v\u00e4henee. Radiotaajuuden (RF) avulla voidaan ajaa siirtymi\u00e4, jotka t\u00e4ytt\u00e4v\u00e4t vajaan tilan uudelleen, johtaen fluoresenssin ja signaalin palautumiseen. T\u00e4t\u00e4 varten suunnitellaan uusi keskielektrodi MR-ToF-laitteeseen RF-elektrodien kera.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "This thesis consists of two parts. In the first part, the magnetic octupole moment of stable ytterbium was determined using collinear laser spectroscopy (CLS) on a fast atomic beam in the Ion-Guide Isotope Separator On-Line (IGISOL) facility at Jyv\u00e4skyl\u00e4. The hyperfine constants of the metastable state in 173-Yb were measured using three different dipole transitions. From the resulting hyperfine spectra, can the constants for dipole, quadrupole, and octupole, be extracted. The corresponding nuclear moments are determined by combining these constants with nuclear theory calculations. \nThe second part of this thesis was done at CERN, in the Multi Ion Reflection Apparatus for CLS (MIRACLS) experiment located in the Isotope Separator On-Line Device (ISOLDE) facility. MIRACLS uses a Multi Reflection Time-of-Flight (MR-ToF) ion trap to extend the laser-ion interaction time. Using this method, the population of the hyperfine state of interest can be pumped out unintentionally, leading to less fluorescence. It can be avoided by applying an RF field to repopulate that state, which increases fluorescence and boosts signal. A new design for the MR-ToF drift tube with an RF electrode was devised.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2020-07-30T07:31:43Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2020-07-30T07:31:43Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "79", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "collinear laser spectroscopy", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ytterbium", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "magnetic octupole moment", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "IGISOL", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "laser-radiofrequency double-resonance", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "multi reflection time-of-flight", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "MR-ToF", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "CERN", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ISOLDE", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "MIRACLS", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Determination of the magnetic octupole moment of 173-Yb and a design towards laser-double resonance methods in an MR-ToF device", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202007305431", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Physics", "language": "en", "element": "subject", "qualifier": 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