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[{"key": "dc.contributor.advisor", "value": "Kankainen, Anu", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Nesterenko, Dmitrii", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Nyk\u00e4nen, Tomi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-12-21T12:59:18Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-12-21T12:59:18Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/79096", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Rutenium-98 isotoopin atomimassa on huonoiten tunnettu kaikista stabiileista isotoopeista. Sen ajankohtaisin taulukkoarvo perustuu 1960- ja 1970-luvuilla suoritettuihin\nmittauksiin, mink\u00e4 seurauksena massaylij\u00e4\u00e4m\u00e4n arvo, (-88225 \u00b1 6) keV, on j\u00e4\u00e4nyt\nep\u00e4tarkaksi. Rutenium-98 on niin kutsuttu p-isotooppi, jota tuotetaan astrofysikaalisen \u03b3-prosessin kautta esimerkiksi supernovar\u00e4j\u00e4hdyksiss\u00e4. Kuten p-isotoopit yleens\u00e4,\nmy\u00f6s rutenium-98 on harvinainen isotooppi. Sen pitoisuus luonnon ruteniumista on\nvain 1,87%. T\u00e4ss\u00e4 pro gradu -tutkielmassa rutenium-98:n atomimassan tarkkuutta\nparannetaan mittaamalla se JYFLTRAP Penningin loukulla.\nMolybdeeni-98 (protoniluku Z=42) voi hajota kaksoisbeetahajoamisella Ru-98:ksi\n(Z=44). Molybdeeni-98 isotoopin massaylij\u00e4\u00e4m\u00e4 (-88115,98 \u00b1 0,17) keV on jo hyvin\ntarkasti tunnettu. T\u00e4m\u00e4n reaktion parempaan mallintamiseen tarvitaan tarkkaa\nQ-arvoa, joka voidaan m\u00e4\u00e4ritt\u00e4\u00e4 JYFLTRAP Penningin loukulla eritt\u00e4in tarkasti.\nT\u00e4ss\u00e4 ty\u00f6ss\u00e4 molybdeeni-98:aa hy\u00f6dynnettiin my\u00f6s referenssi-ionina.\nLopputuloksena rutenium-98:n massaylij\u00e4\u00e4m\u00e4lle saatiin arvo (-88229,8 \u00b1 0,3) keV\nja atomimassaksi (97,9052814 \u00b1 0,0000003) u, mik\u00e4 sopii aiempiin mittaustuloksiin,\nmutta on huomattavan paljon tarkempi. Lis\u00e4ksi laskin t\u00e4t\u00e4 tulosta hy\u00f6dynt\u00e4m\u00e4ll\u00e4\nuudet tarkemmat Q-arvot erilaisille Ru-98 isotooppiin liittyville reaktioille.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The atomic mass of the ruthenium-98 isotope is the least known of all stable isotopes.\nIts current literary value is based on measurements done in 1960s and 1970s, and\nits mass-excess value, (-88225 \u00b1 6) keV, has a very high uncertainty. It is a socalled p-isotope and is produced through the astrophysical \u03b3-process in for example,\nsupernova explosions. Its share of natural ruthenium is just 1.87%. In this master\u2019s\nthesis the atomic mass of ruthenium-98 is measured more accurately using the\nJYFLTRAP Penning trap.\nMolybdenium-98 (proton number Z=42) can double-beta decay into Ru-98 (Z=44).\nIts mass excess (-88115.98 \u00b1 0.17) keV is already known very accurately. To model\nthe double beta-decay better its Q-value has to be known precisely. This can\nbe determined very accurately with the JYFLTRAP Penning trap. In this work,\nmolybdenium-98 was also utilized as a reference ion.\nAs a result, the mass excess of (-88229.8 \u00b1 0.3) keV was achieved for Ru-98, which\nis equal to total mass of (97.9052814 \u00b1 0.0000003) u. This result is in agreement\nwith previous measurements, but is a lot more accurate. In addition, I calculated\nnew more accurate Q-values for different reactions that involve Ru-98 using these\nresults.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-12-21T12:59:18Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-12-21T12:59:18Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "46", "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": "fin", "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": "Rutenium-98", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "JYFLTRAP Penningin loukku", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "\u03b3-prosessi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kaksoisbeetahajoaminen", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Rutenium-98 isotoopin tarkkuusmassamittaus JYFLTRAP Penningin loukulla", "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-202112216078", "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": "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": "4021", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fysiikka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "isotoopit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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