Search for elements 119 and 120

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dc.contributor.authorKhuyagbaatar, J.
dc.contributor.authorYakushev, A.
dc.contributor.authorDullmann, Ch.E.
dc.contributor.authorAckermann, D.
dc.contributor.authorAndersson, L.-L
dc.contributor.authorAsai, M.
dc.contributor.authorBlock, M.
dc.contributor.authorBoll, R.A.
dc.contributor.authorBrand, H.
dc.contributor.authorCox, D M
dc.contributor.authorDasgupta, Mahananda
dc.contributor.authorEvers, Maurits
dc.contributor.authorHinde, David
dc.date.accessioned2023-05-04T01:47:13Z
dc.date.available2023-05-04T01:47:13Z
dc.date.issued2020
dc.date.updated2022-02-13T07:17:14Z
dc.description.abstractA search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the 50Ti + 249Bk and 50Ti + 249Cf fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the 249Bk target partially decayed into 249Cf, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the 50Ti + 249Bk and 50Ti + 249Cf reactions, respectively, at a midtarget beam energy of E-lab = 281.5 MeV. The nonobservation of elements 119 and 120 is discussed within the concept of fusion-evaporation reactions including various theoretical predictions on the fission-barrier heights of superheavy nuclei in the region of the island of stability.en_AU
dc.description.sponsorshipThis work was financially supported in part by the German BMBF (Grant No. 05P12UMFNE), the Helmholtz association (Grant No. VH-NG-723), the Helmholtz Institute Mainz, Swedish Research Council (Vetenskapsrådet VR Grants No. 2011-5253 and No. 2016-3969), the Australian Federal Government ARC (Grants No. DP170102318, No. DP170102423, and No. DP200100601), the US Department of Energy by LLNL (Grant No. DE-AC52-07NA27344), Vanderbilt University (Grant No. DE-FG05-88ER40407), and the Laboratory Directed Research and Development Program at LLNL (Grant No. 11-ERD-011). This work was cosponsored by the Office of Science, US Department of Energy (DOE), and supported under U.S. DOE Grant No. DE-AC05-00OR22725 (ORNL). 249Bk material was provided by the U.S. DOE Isotope Program.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn2469-9993en_AU
dc.identifier.urihttp://hdl.handle.net/1885/289860
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/32262..."The Published Version can be archived in Institutional Repository" from SHERPA/RoMEO site (as at 4/05/2023).en_AU
dc.publisherAmerican Physical Societyen_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP170102318en_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP170102423en_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP200100601en_AU
dc.rights© 2020 American Physical Societyen_AU
dc.sourcePhysical Review Cen_AU
dc.titleSearch for elements 119 and 120en_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue6en_AU
local.bibliographicCitation.lastpage064602-9en_AU
local.bibliographicCitation.startpage064602-1en_AU
local.contributor.affiliationKhuyagbaatar, J., Helmholz Institute Mainzen_AU
local.contributor.affiliationYakushev, A., GSI Helmholtzzentrum fur Schwerionenforschung GmbHen_AU
local.contributor.affiliationDullmann, Ch.E., Helmholz Institute Mainzen_AU
local.contributor.affiliationAckermann, D., Gesellschaft fur Schwerionenforschungen_AU
local.contributor.affiliationAndersson, L.-L, Helmoltz Institute Mainzen_AU
local.contributor.affiliationAsai, M., Japan Atomic Energy Agencyen_AU
local.contributor.affiliationBlock, M., GSI Helmoltzzentrum fur Schwerionenforschungen_AU
local.contributor.affiliationBoll, R.A., Oak Ridge National Laboratoryen_AU
local.contributor.affiliationBrand, H., GSI Helmoltzzentrum fur Schwerionenforschungen_AU
local.contributor.affiliationCox, D M, University of Liverpoolen_AU
local.contributor.affiliationDasgupta, Mahananda, College of Science, ANUen_AU
local.contributor.affiliationEvers, Maurits, College of Science, ANUen_AU
local.contributor.affiliationHinde, David, College of Science, ANUen_AU
local.contributor.authoruidDasgupta, Mahananda, u9206549en_AU
local.contributor.authoruidEvers, Maurits, u2528469en_AU
local.contributor.authoruidHinde, David, u8203491en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor510601 - Nuclear physicsen_AU
local.identifier.absseo280120 - Expanding knowledge in the physical sciencesen_AU
local.identifier.ariespublicationa383154xPUB17224en_AU
local.identifier.citationvolume102en_AU
local.identifier.doi10.1103/PhysRevC.102.064602en_AU
local.identifier.thomsonID000595153500002
local.publisher.urlhttps://journals.aps.org/en_AU
local.type.statusPublished Versionen_AU

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