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dc.contributor.authorHaaranen, Mikko
dc.date.accessioned2017-10-06T09:37:58Z
dc.date.available2017-10-06T09:37:58Z
dc.date.issued2017
dc.identifier.isbn978-951-39-7154-0
dc.identifier.otheroai:jykdok.linneanet.fi:1725043
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/55573
dc.description.abstractThis is a thesis consisting of seven publications and an introductory part on theoretical studies on rare single beta decays. Firstly, the theoretical framework is applied to the computation of partial half-lives for few selected cases of rare single beta-decay transitions. This includes the study on a possible ultra-low-Q-value decay branch of 115Cd as well as the highly forbidden beta decays of 48Ca and 50V. The double magic 48Ca is one of the few experimentally verified nuclei that decay via the two-neutrino mode of double beta decay. A theoretical study on the single beta-decay branches was used to inspect the competition between the single and double beta-decay channels. In the case of 50V the theoretical framework is used to examine the detectability of the beta-minus decay branch that leads to the first excited 2+ state of 50Cr. To access the finer details of the theory the usual analysis of beta-decay transitions is extended by the introduction of the next-to-leading-order terms of the beta-decay shape factor. A comparison between the leading-order and the next-to-leading-order contributions is performed in the case of the fourth- forbidden decay branches of 113Cd and 115In. Finally, an overview on the recently introduced spectrum-shape method is given. The spectrum-shape method (SSM) was developed for the extraction of the effective values of the weak coupling constants as a complementary approach to the usual partial half-life considerations. Highly encouraging results are obtained when SSM is applied to the beta decay of 113Cd. In this initial application of the method consistent values of the two coupling constant were found when the calculations were performed using three different nuclear models.
dc.format.extent1 verkkoaineisto (ix, 39 sivua) : kuvitettu
dc.language.isoeng
dc.publisherUniversity of Jyväskylä
dc.relation.ispartofseriesResearch report / Department of Physics, University of Jyväskylä
dc.relation.haspart<b>Artikkeli I:</b> Haaranen, M. & Suhonen, J. (2013). Beta decay of 115Cd and its possible ultra-low Q-value branch. <i>The European Physical Journal A, 49, 93.</i> DOI: <a href="https://doi.org/10.1140/epja/i2013-13093-8"target="_blank"> 10.1140/epja/i2013-13093-8</a>
dc.relation.haspart<b>Artikkeli II:</b> Haaranen, M., Horoi, M., & Suhonen, J. (2014). Shell-model study of the 4th- and 6th-forbidden β -decay branches of 48-Ca. <i>Physical Review C, 89(3), Article 034315.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.89.034315"target="_blank"> 10.1103/PhysRevC.89.034315</a>
dc.relation.haspart<b>Artikkeli III:</b> Haaranen, M., Srivastava, P. C., Suhonen, J., & Zuber, K. (2014). β-decay half-life of V 50 calculated by the shell model. <i>Physical review C, 90(4), Article 044314.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.90.044314"target="_blank"> 10.1103/PhysRevC.90.044314</a>
dc.relation.haspart<b>Artikkeli IV:</b> Alanssari, M., Frekers, D., Eronen, T., Canete, L., Dilling, J., Haaranen, M., Hakala, J., Holl, M., Ješkovský, M., Jokinen, A., Kankainen, A., Koponen, J., Mayer, A. J., Moore, I., Nesterenko, D., Pohjalainen, I., Povinec, P., Reinikainen, J., Rinta-Antila, S., . . . Wieser, M. E. (2016). Single and Double Beta-Decay Q Values among the Triplet 96Zr, 96Nb, and 96Mo. <i>Physical Review Letters, 116(7), Article 072501.</i> DOI: <a href="https://doi.org/10.1103/PhysRevLett.116.072501"target="_blank"> 10.1103/PhysRevLett.116.072501</a>
dc.relation.haspart<b>Artikkeli V:</b> Haaranen, M., Srivastava, P. C., & Suhonen, J. (2016). Forbidden nonunique β decays and effective values of weak coupling constants. <i>Physical Review C, 93(3), Article 034308.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.93.034308"target="_blank"> 10.1103/PhysRevC.93.034308</a>
dc.relation.haspart<b>Artikkeli VI:</b> Haaranen, M., Kotila, J.-M., & Suhonen, J. (2017). Spectrum-shape method and the next-to-leading-order terms of the β-decay shape factor. <i>Physical Review C, 95(2), Article 024327.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.95.024327"target="_blank"> 10.1103/PhysRevC.95.024327</a>
dc.relation.haspart<b>Artikkeli VII:</b> Kostensalo, J., Haaranen, M., & Suhonen, J. (2017). Electron spectra in forbidden β decays and the quenching of the weak axial-vector coupling constant gA. <i>Physical Review C, 95(4), Article 044313.</i> DOI: <a href="https://doi.org/10.1103/PhysRevC.95.044313"target="_blank"> 10.1103/PhysRevC.95.044313</a>
dc.relation.isversionofYhteenveto-osa ja 7 eripainosta julkaistu myös painettuna.
dc.rightsIn Copyright
dc.subject.otherbeetahajoaminen
dc.subject.otherbeetaspektri
dc.subject.otherbeta decay
dc.subject.otherbeta spectrum
dc.subject.otherhighly forbidden
dc.subject.othernuclear physics
dc.subject.otherrare decay
dc.subject.otherspectrum-shape method
dc.subject.othertheoretical nuclear physics
dc.titleRare beta decays and the spectrum-shape method
dc.typeDiss.
dc.identifier.urnURN:ISBN:978-951-39-7154-0
dc.type.dcmitypeTexten
dc.type.ontasotVäitöskirjafi
dc.type.ontasotDoctoral dissertationen
dc.contributor.tiedekuntaMatemaattis-luonnontieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Mathematics and Scienceen
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.oppiaineFysiikkafi
dc.relation.issn0075-465X
dc.relation.numberinseries2017, 5
dc.rights.accesslevelopenAccess
dc.subject.ysoydinfysiikka
dc.subject.ysobeetasäteily
dc.subject.ysoradioaktiivisuus
dc.subject.ysohiukkaset
dc.subject.ysohajoaminen
dc.subject.ysomallintaminen
dc.rights.urlhttps://rightsstatements.org/page/InC/1.0/


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