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[{"key": "dc.contributor.advisor", "value": "Suhonen, Jouni", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Agnihotri, Aagrah", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-05-28T08:35:46Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-05-28T08:35:46Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/95258", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "For the first time, estimates for \u03b2 decay rates are made that are necessary for experimental searches of low-mass axions. Low-mass axions are potential dark matter candidates, hence, searches of low-mass axions have implications beyond standard model physics. For terrestrial searches of low-mass axions, 44Ti, 57Co, and 139Ce are popular sources. The sources decay purely via electron-capture and populate M1-decaying excited states in daughter nuclei. These M1-decaying nuclear-excited states are also expected to decay via axion production. The GS-to-GS branches of the electron-capture decays of 44Ti, 57Co, and 139Ce, not yet measured are expected to have identical experimental signatures as the axionic transitions. These GS-to-GS transitions are rare, and experiments call for theory predictions for transition rates of these decay branches. The scope of the work done addresses such needs of the experiments.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4ss\u00e4 ty\u00f6ss\u00e4 tehd\u00e4\u00e4n ensimm\u00e4ist\u00e4 kertaa arviot beetahajoamisnopeuksista, jotka ovat v\u00e4ltt\u00e4m\u00e4tt\u00f6mi\u00e4 keveit\u00e4 aksioneja etsivien kokeiden kannalta. Keve\u00e4t aksionit ovat potentiaalisia ehdokkaita pime\u00e4ksi aineeksi, joten niiden etsinn\u00f6ill\u00e4 on vaikutuksia standardimallin ulkopuolisen fysiikan l\u00f6ytymisen mahdollisiin. Keveiden aksionien kokeellisissa etsinn\u00f6iss\u00e4 44Ti, 57Co ja 139Ce ovat suosittuja beetal\u00e4hteit\u00e4. N\u00e4m\u00e4 l\u00e4hteet hajoavasti puhtaasti elecktronin sieppauksen kautta ja sy\u00f6tt\u00e4v\u00e4t tyt\u00e4rytimien\nM1 (magneettinen dipoli)-hajoavia viritystiloja. N\u00e4iden M1-hajoavien viritystilojen arvellaan purkautuvan my\u00f6s aksionituoton kautta. Toisaalta 44Ti:n, 57Co:n ja 139Ce:n perustilalta perustilalle tapahtuvat electronisieppaushajoamiset tuottavat oletetusti samanlaisen kokeellisen signaalin kuin aksioniset siirtym\u00e4t. N\u00e4m\u00e4 perustilalta perustilalle tapahtuvat siirtym\u00e4t ovat hyvin harvinaisia eik\u00e4 niit\u00e4 ole viel\u00e4 pystytty mittaamaan, joten kokeet hy\u00f6tyv\u00e4t n\u00e4iden hajoamisten siirtym\u00e4nopeuksien teoriaennusteista. T\u00e4t\u00e4 kautta t\u00e4ss\u00e4 ty\u00f6ss\u00e4 tehty tutkimus pyrkii helpottamaan aksionimittausten haasteita.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2024-05-28T08:35:46Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-05-28T08:35:46Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "39", "language": "", "element": "format", "qualifier": "extent", "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": "electron-capture decays", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "axion", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Electron-capture decays mimicking axionic transitions", "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-202405284021", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Theoretical Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Teoreettinen fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4024", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ydinfysiikka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pime\u00e4 aine", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "nuclear physics", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "dark matter", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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