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dc.contributor.authorGaffney, L. P.
dc.contributor.authorRobinson, A. P.
dc.contributor.authorJenkins, D. G.
dc.contributor.authorAndreyev, A. N.
dc.contributor.authorBender, M.
dc.contributor.authorBlazhev, A.
dc.contributor.authorBree, N.
dc.contributor.authorBruyneel, B.
dc.contributor.authorButler, P. A.
dc.contributor.authorCocolios, T. E.
dc.contributor.authorDavinson, T.
dc.contributor.authorDeacon, A. N.
dc.contributor.authorWitte, H. De
dc.contributor.authorDiJulio, D.
dc.contributor.authorDiriken, J.
dc.contributor.authorEkström, A.
dc.contributor.authorFransen, Ch.
dc.contributor.authorFreeman, S. J.
dc.contributor.authorGeibel, K.
dc.contributor.authorGrahn, Tuomas
dc.contributor.authorHadinia, B.
dc.contributor.authorHass, M.
dc.contributor.authorHeenen, P.-H.
dc.contributor.authorHess, H.
dc.contributor.authorHuyse, M.
dc.contributor.authorJakobsson, Ulrika
dc.contributor.authorKesteloot, N.
dc.contributor.authorKonki, Joonas
dc.contributor.authorKröll, Th.
dc.contributor.authorKumar, V.
dc.contributor.authorIvanov, O.
dc.contributor.authorMartin-Haugh, S.
dc.contributor.authorMücher, D.
dc.contributor.authorOrlandi, R.
dc.contributor.authorPakarinen, Janne
dc.contributor.authorPetts, A.
dc.contributor.authorPeura, Pauli
dc.contributor.authorRahkila, Panu
dc.contributor.authorReiter, P.
dc.contributor.authorScheck, M.
dc.contributor.authorSeidlitz, M.
dc.contributor.authorSingh, K.
dc.contributor.authorSmith, J. F.
dc.contributor.authorWalle, J. Van de
dc.contributor.authorDuppen, P. Van
dc.contributor.authorVoulot, D.
dc.contributor.authorWadsworth, R.
dc.contributor.authorWarr, N.
dc.contributor.authorWenander, F.
dc.contributor.authorWimmer, K.
dc.contributor.authorWrzosek-Lipska, K.
dc.contributor.authorZielińska, M.
dc.date.accessioned2015-07-20T07:03:08Z
dc.date.available2015-07-20T07:03:08Z
dc.date.issued2015
dc.identifier.citationGaffney, L., Robinson, A., Jenkins, D., Andreyev, A., Bender, M., Blazhev, A., . . . Zieli&#324;ska, M. (2015). Collectivity in the light radon nuclei measured directly via Coulomb excitation. <em>Physical Review C</em>, 91 (6), 064313. <a href="http://dx.doi.org/10.1103/PhysRevC.91.064313">doi:10.1103/PhysRevC.91.064313</a>
dc.identifier.otherTUTKAID_66570
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/46516
dc.description.abstractBackground: Shape coexistence in heavy nuclei poses a strong challenge to state-of-the-art nuclear models, where several competing shape minima are found close to the ground state. A classic region for investigating this phenomenon is in the region around Z = 82 and the neutron midshell at N = 104. Purpose: Evidence for shape coexistence has been inferred from α-decay measurements, laser spectroscopy, and in-beam measurements. While the latter allow the pattern of excited states and rotational band structures to be mapped out, a detailed understanding of shape coexistence can only come from measurements of electromagnetic matrix elements. Method: Secondary, radioactive ion beams of 202Rn and 204Rn were studied by means of low-energy Coulomb excitation at the REX-ISOLDE in CERN. Results: The electric-quadrupole (E2) matrix element connecting the ground state and first excited 2+ 1 state was extracted for both 202Rn and 204Rn, corresponding to B(E2; 2+ 1 → 0+ 1 ) = 29+8 −8 and 43+17 −12 W.u., respectively. Additionally, E2 matrix elements connecting the 2+ 1 state with the 4+ 1 and 2+ 2 states were determined in 202Rn. No excited 0+ states were observed in the current data set, possibly owing to a limited population of second-order processes at the currently available beam energies. Conclusions: The results are discussed in terms of collectivity and the deformation of both nuclei studied is deduced to be weak, as expected from the low-lying level-energy schemes. Comparisons are also made to state-of-the-art beyond-mean-field model calculations and the magnitude of the transitional quadrupole moments are well reproduced.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.othershape coexistenceen
dc.subject.othercollectivityen
dc.subject.otherRadonen
dc.titleCollectivity in the light radon nuclei measured directly via Coulomb excitation
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201507102566
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-07-10T15:15:02Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn0556-2813
dc.relation.numberinseries6
dc.relation.volume91
dc.type.versionpublishedVersion
dc.rights.copyright© the Authors. This article is available under the terms of the Creative Commons Attribution License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Published by the American Physical Society.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/3.0/
dc.relation.doi10.1103/PhysRevC.91.064313


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© the Authors. This article is available under the terms of the Creative Commons Attribution License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Published by the American Physical Society.
Except where otherwise noted, this item's license is described as © the Authors. This article is available under the terms of the Creative Commons Attribution License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Published by the American Physical Society.