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dc.contributor.authorParr, E.
dc.contributor.authorSmith, J. F.
dc.contributor.authorGreenlees, P. T.
dc.contributor.authorAuranen, K.
dc.contributor.authorButler, P. A.
dc.contributor.authorChapman, R.
dc.contributor.authorCox, D. M.
dc.contributor.authorCullen, D. M.
dc.contributor.authorGaffney, L. P.
dc.contributor.authorGrahn, T.
dc.contributor.authorGregor, E. T.
dc.contributor.authorGrocutt, L.
dc.contributor.authorHerzán, A.
dc.contributor.authorHerzberg, R.-D.
dc.contributor.authorHodge, D.
dc.contributor.authorJakobsson, U.
dc.contributor.authorJulin, R.
dc.contributor.authorJuutinen, S.
dc.contributor.authorKeatings, J.
dc.contributor.authorKonki, J.
dc.contributor.authorLeino, M.
dc.contributor.authorMcKee, P. P.
dc.contributor.authorMcPeake, C.
dc.contributor.authorMengoni, D.
dc.contributor.authorMistry, A. K.
dc.contributor.authorMulholland, K. F.
dc.contributor.authorSingh, B. S. Nara
dc.contributor.authorO'Neill, G. G.
dc.contributor.authorPakarinen, J.
dc.contributor.authorPapadakis, P.
dc.contributor.authorPartanen, J.
dc.contributor.authorPeura, P.
dc.contributor.authorRahkila, P.
dc.contributor.authorRuotsalainen, P.
dc.contributor.authorSandzelius, M.
dc.contributor.authorSarén, J.
dc.contributor.authorScheck, M.
dc.contributor.authorScholey, C.
dc.contributor.authorSiciliano, M.
dc.contributor.authorSmolen, M.
dc.contributor.authorSorri, J.
dc.contributor.authorSpagnoletti, P.
dc.contributor.authorSpohr, K. M.
dc.contributor.authorStolze, S.
dc.contributor.authorTaylor, M. J.
dc.contributor.authorUusitalo, J.
dc.identifier.citationParr, E., Smith, J. F., Greenlees, P. T., Auranen, K., Butler, P. A., Chapman, R., Cox, D. M., Cullen, D. M., Gaffney, L. P., Grahn, T., Gregor, E. T., Grocutt, L., Herzán, A., Herzberg, R.-D., Hodge, D., Jakobsson, U., Julin, R., Juutinen, S., Keatings, J., . . . Uusitalo, J. (2019). α-decay spectroscopy of the N = 130 isotones 218Ra and 220Th: Mitigation of α-particle energy summing with implanted nuclei. <i>Physical Review C</i>, <i>100</i>(4), Article 044323. <a href="" target="_blank"></a>
dc.description.abstractAn analysis technique has been developed in order to mitigate energy summing due to sequential short-lived α decays from nuclei implanted into a silicon detector. Using this technique, α-decay spectroscopy of the N=130 isotones 218Ra (Z=88) and 220Th (Z=90) has been performed. The energies of the α particles emitted in the 218Ra→214Rn and 220Th→216Ra ground-state-to-ground-state decays have been measured to be 8381(4) keV and 8818(13) keV, respectively. The half-lives of the ground states of 218Ra and 220Th have been measured to be 25.99(10) μs and 10.4(4) μs, respectively. The half-lives of the ground states of the α-decay daughters, 214Rn and 216Ra, have been measured to be 259(3) ns and 161(11) ns, respectively. Fine structure in the α decay of 218Ra has been observed for the first time, populating the 695-keV 2+1 state in 214Rn. The fine-structure α decay has an α-particle energy of 7715(40) keV and branching ratio bα=0.123(11)%.en
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.rightsIn Copyright
dc.subject.otheralpha decay
dc.subject.othernuclear data analysis and compilation
dc.subject.otherspectrometers and spectroscopic techniques
dc.titleα-decay spectroscopy of the N = 130 isotones 218Ra and 220Th: Mitigation of α-particle energy summing with implanted nuclei
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineYdin- ja kiihdytinfysiikan huippuyksikköfi
dc.contributor.oppiaineCentre of Excellence in Nuclear and Accelerator Based Physicsen
dc.contributor.oppiaineAccelerator Laboratoryen
dc.rights.copyright© 2019 American Physical Society
jyx.fundinginformationThis work is supported in part by the STFC (UK) under Grants No. ST/J000183/2, No. ST/L005808/1, No. EP/E02551x1/1, and No. ST/L005794/1; by the EU 7th Framework Programme, Integrating Activities Transnational Access, Project No. 262010 (ENSAR); by the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL); by the Slovak Research and Development Agency under Contract No. APVV-15-0225; by the Slovak grant agency VEGA (Contract No. 2/0129/17); and the project ITMS code 26210120023, supported by the Research and Development Operational Programme funded by ERDF (30%). The authors acknowledge support of Gammapool for use of the Jurogam detectors. E.P., J.F.S., and M.Sc. acknowledge support of the Scottish Universities Physics Alliance (SUPA).

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