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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/25340
Title: Search for elements 119 and 120
Authors: Khuyagbaatar J.
Yakushev A.
Düllmann C.E.
Ackermann D.
Andersson L.-L.
Asai M.
Block M.
Boll R.A.
Brand H.
Cox D.M.
Dasgupta M.
Derkx X.
Di Nitto A.
Eberhardt K.
Even J.
Evers M.
Fahlander C.
Forsberg U.
Gates J.M.
Gharibyan N.
Golubev P.
Gregorich K.E.
Hamilton J.H.
Hartmann W.
Herzberg R.-D.
Heßberger F.P.
Hinde D.J.
Hoffmann J.
Hollinger R.
Hübner A.
Jäger E.
Kindler B.
Kratz J.V.
Krier J.
Kurz N.
Laatiaoui M.
Lahiri S.
Lang R.
Lommel B.
Maiti, Moumita
Miernik K.
Minami S.
Mistry A.K.
Mokry C.
Nitsche H.
Omtvedt J.P.
Pang G.K.
Papadakis P.
Renisch D.
Roberto J.B.
Rudolph D.
Runke J.
Rykaczewski K.P.
Sarmiento L.G.
Schädel M.
Schausten B.
Semchenkov A.
Shaughnessy D.A.
Steinegger P.
Steiner J.
Tereshatov E.E.
Thörle-Pospiech P.
Tinschert K.
Torres De Heidenreich T.
Trautmann N.
Türler A.
Uusitalo J.
Wegrzecki M.
Wiehl N.
Van Cleve S.M.
Yakusheva V.
Published in: Physical Review C
Abstract: A search for production of the superheavy elements with atomic numbers 119 and 120 was performed in the Ti50+Bk249 and Ti50+Cf249 fusion-evaporation reactions, respectively, at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. Over four months of irradiation, the Bk249 target partially decayed into Cf249, which allowed for a simultaneous search for both elements. Neither was detected at cross-section sensitivity levels of 65 and 200 fb for the Ti50+Bk249 and Ti50+Cf249 reactions, respectively, at a midtarget beam energy of Elab=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. © 2020 American Physical Society.
Citation: Physical Review C, 102(6)
URI: https://doi.org/10.1103/PhysRevC.102.064602
http://repository.iitr.ac.in/handle/123456789/25340
Issue Date: 2020
Publisher: American Physical Society
ISSN: 24699985
Author Scopus IDs: 14826956100
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Author Affiliations: Khuyagbaatar, J., Helmholtz Institute Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Yakushev, A., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Düllmann, C.E., Helmholtz Institute Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Ackermann, D., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Andersson, L.-L., Helmholtz Institute Mainz, Mainz, 55099, Germany
Asai, M., Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
Block, M., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Boll, R.A., Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
Brand, H., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Cox, D.M., University of Liverpool, Liverpool, L69 7ZE, United Kingdom
Dasgupta, M., Department of Nuclear Physics, RSP, the Australian National University, Canberra, ACT 2601, Australia
Derkx, X., Helmholtz Institute Mainz, Mainz, 55099, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Di Nitto, A., Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Eberhardt, K., Helmholtz Institute Mainz, Mainz, 55099, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Even, J., Helmholtz Institute Mainz, Mainz, 55099, Germany
Evers, M., Department of Nuclear Physics, RSP, the Australian National University, Canberra, ACT 2601, Australia
Fahlander, C., Lund University, Lund, 22100, Sweden
Forsberg, U., Lund University, Lund, 22100, Sweden
Gates, J.M., Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
Gharibyan, N., Lawrence Livermore National Laboratory, Livermore, CA 94551, United States
Golubev, P., Lund University, Lund, 22100, Sweden
Gregorich, K.E., Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
Hamilton, J.H., Vanderbilt University, Nashville, TN 37235, United States
Hartmann, W., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Herzberg, R.-D., University of Liverpool, Liverpool, L69 7ZE, United Kingdom
Heßberger, F.P., Helmholtz Institute Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Hinde, D.J., Department of Nuclear Physics, RSP, the Australian National University, Canberra, ACT 2601, Australia
Hoffmann, J., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Hollinger, R., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Hübner, A., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Jäger, E., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Kindler, B., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Kratz, J.V., Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Krier, J., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Kurz, N., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Laatiaoui, M., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Lahiri, S., Saha Institute of Nuclear Physics, Kolkata, 700064, India
Lang, R., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Lommel, B., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Maiti, M., Saha Institute of Nuclear Physics, Kolkata, 700064, India
Miernik, K., Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
Minami, S., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Mistry, A.K., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
Mokry, C., Helmholtz Institute Mainz, Mainz, 55099, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Nitsche, H., Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
Omtvedt, J.P., University of Oslo, Oslo, 0315, Norway
Pang, G.K., Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
Papadakis, P., University of Liverpool, Liverpool, L69 7ZE, United Kingdom, University of Jyväskylä, Jyväskylä, 40351, Finland
Renisch, D., Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Roberto, J.B., Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
Rudolph, D., Lund University, Lund, 22100, Sweden
Runke, J., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Rykaczewski, K.P., Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
Sarmiento, L.G., Lund University, Lund, 22100, Sweden
Schädel, M., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany, Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
Schausten, B., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Semchenkov, A., University of Oslo, Oslo, 0315, Norway
Shaughnessy, D.A., Lawrence Livermore National Laboratory, Livermore, CA 94551, United States
Steinegger, P., Paul Scherrer Institute, Villigen PSI, 5232, Switzerland, University of Bern, Bern, 3012, Switzerland
Steiner, J., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Tereshatov, E.E., Lawrence Livermore National Laboratory, Livermore, CA 94551, United States
Thörle-Pospiech, P., Helmholtz Institute Mainz, Mainz, 55099, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Tinschert, K., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Torres De Heidenreich, T., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany
Trautmann, N., Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Türler, A., Paul Scherrer Institute, Villigen PSI, 5232, Switzerland, University of Bern, Bern, 3012, Switzerland
Uusitalo, J., University of Jyväskylä, Jyväskylä, 40351, Finland
Wegrzecki, M., Łukasiewicz - Institute of Electron Technology, Warsaw, 02-668, Poland
Wiehl, N., Helmholtz Institute Mainz, Mainz, 55099, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany
Van Cleve, S.M., Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
Yakusheva, V., Helmholtz Institute Mainz, Mainz, 55099, Germany
Funding Details: We are grateful for GSI's Penning ion source and UNILAC staff, and the Experimental Electronics department for their continuous support of the experiment. This 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). material was provided by the U.S. DOE Isotope Program. DP170102318, DP170102423, DP200100601; 2011-5253, 2016-3969; U.S. Department of Energy, USDOE: DE-AC05-00OR22725; Office of Science, SC; Lawrence Livermore National Laboratory, LLNL: DE-AC52-07NA27344; Oak Ridge National Laboratory, ORNL; Vanderbilt University: DE-FG05-88ER40407; Laboratory Directed Research and Development, LDRD: 11-ERD-011; Bundesministerium für Bildung und Forschung, BMBF: 05P12UMFNE; Vetenskapsrådet, VR; Helmholtz Association: VH-NG-723
Corresponding Author: Khuyagbaatar, J.; Helmholtz Institute MainzGermany; email: J.Khuyagbaatar@gsi.de
Appears in Collections:Journal Publications [PH]

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