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[{"key": "dc.contributor.advisor", "value": "Pakarinen, Janne", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Ojala, Joonas", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-04-24T11:59:39Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-04-24T11:59:39Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1695365", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/53660", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ty\u00f6ss\u00e4 testattiin uutta SPEDE-ilmaisinta CERNin ISOLDE-laboratorion MINIBALLkoeasemalla, jossa selvitet\u00e4\u00e4n ytimien rakenteita k\u00e4ytt\u00e4m\u00e4ll\u00e4 radioaktiivia suihkuja. Ilmaisimen testauksessa k\u00e4ytettiin radioaktiivisia Bi-207 ja Hg-191 l\u00e4hteit\u00e4. SPEDE-ilmaisimella pystyt\u00e4\u00e4n havaitsemaan sis\u00e4isen konversion elektroneja. Ytimen viritystilan\r\npurkautumisessa sis\u00e4inen konversio on kilpaileva prosessi tavanomaisemmalle \u03b3-emissiolle.\r\nSis\u00e4ist\u00e4 konversiota tutkimalla saadaan selvitetty\u00e4 ytimen rakenteen ominaisuuksia kuten\r\nesimerkiksi E0-siirtym\u00e4t ytimiss\u00e4. SPEDE-ilmaisin mahdollistaa samanaikaiset \u03b3- ja elektronispektrometriset mittaukset MINIBALL-koeasemalla. Ty\u00f6ss\u00e4 k\u00e4ytettiin kokeellisten\r\nmittaustulosten tukena GEANT4-simulaatio-ohjelmalla saatuja tuloksia. Ty\u00f6n tuloksina\r\nsaatiin m\u00e4\u00e4ritetty\u00e4 \u03b1K/L-kerroin Bi-207 konversioelektroneille, siirtym\u00e4lle 5^2\u2212 -> 1^2\u2212\r\n\u03b1K/L = 3.29 \u00b1 0.06 ja siirtym\u00e4lle 13^2+ -> 5^2\u2212 \u03b1K=L = 3.11 \u00b1 0.05. Lis\u00e4ksi ty\u00f6ss\u00e4\r\nm\u00e4\u00e4ritettiin osittainen konversiokerroin Au-191 siirtym\u00e4lle 5^2+ -> 3^2+ \u03b1Kmeas = 0.30\u00b1\r\n0.13, jolle on m\u00e4\u00e4ritetty teoreettinen arvo \u03b1Ktheor = 0.28\u00b10.01. Testin tuloksena voidaan\r\ntodeta, ett\u00e4 SPEDE kykenee toimimaan tulevissa mittauksissa MINIBALL-koeasemalla\r\nmahdollistaen uuden tavan tutkia ytimien rakenteita. Osa tuloksista ei ollut yhten\u00e4isi\u00e4\r\nvanhoihin tuloksiin tai teoreettisiin laskelmiin. T\u00e4m\u00e4n selitt\u00e4\u00e4 k\u00e4ytetty elektroniikka,\r\nmik\u00e4 ei ollut t\u00e4ysin yhteensopiva SPEDEn kanssa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The aim of this work was to test the performance of the SPEDE detector in the MINIBALL setup at CERN\u2019s ISOLDE laboratory. The main research objective of MINIBALL\r\nis to study properties of atomic nuclei employing radioactive ion beams. Radioactive\r\nBi-207 and Hg-191 were used in this experiment. SPEDE detects internal conversion\r\nelectrons which are created in transitions between states in atomic nucleus. The internal\r\nconversion is competing process to more common \u03b3-ray emission. This way it is possible\r\nto measure different properties of nuclear structure for example the E0-transitions. The\r\nsimultaneous \u03b3 and electron measurements are possible when SPEDE is used in conjunction with the MINIBALL spectrometer. The GEANT4 simulation results were used to\r\nhelp interpretation of experimental results. As a result, \u03b1K/L-ratio was determined for\r\nBi-207 conversion electrons, for the 5^2\u2212 -> 1^2\u2212 transition \u03b1K/L = 3.29\u00b10.06 and for the\r\n13^2+-> 5^2\u2212 transition \u03b1K/L = 3.11\u00b10.05 were obtained. Also, the partial internal conversion coefficient \u03b1Kmeas = 0.30 \u00b1 0.13 was determined for Au-191 for the 5^2+ ->3^2+\r\ntransition , which is well in-line with the theoretical value \u03b1Ktheor = 0:28 \u00b1 0:01. Some\r\nof the results are inconsistent with theory and previous results, which can be explained\r\nby the electronics used in tests. One can still say that SPEDE is capable to measure in\r\nfuture experiments in MINIBALL-experimental setup. SPEDE will bring new possibility\r\nto explore nuclear structure in MINIBALL.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Joonas Ojala (jokaojal) on 2017-04-24 11:59:35.189882. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-04-24T11:59:39Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201704242051.pdf: 29403990 bytes, checksum: 1541624b4f9b251c5d09fa2c2b4b4290 (MD5)\r\nlicense.html: 4817 bytes, checksum: 18a0a57cd2f4fe213a0f4229c6206cdb (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-04-24T11:59:39Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201704242051.pdf: 29403990 bytes, checksum: 1541624b4f9b251c5d09fa2c2b4b4290 (MD5)\r\nlicense.html: 4817 bytes, checksum: 18a0a57cd2f4fe213a0f4229c6206cdb (MD5)\r\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (45 sivua)", "language": null, "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": "sis\u00e4inen konversio", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "elektronispektrometri", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "SPEDE", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ISOLDE", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "MINIBALL", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Testing of the SPEDE conversion electron spectrometer at ISOLDE", "language": null, "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-201704242051", "language": null, "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": "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": "Fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2017-04-24T11:59:39Z", "language": "", "element": "date", "qualifier": "updated", "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": "fi", "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": null, "element": "subject", "qualifier": "oppiainekoodi", "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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