Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282$\mathrm{Cn}$, and spontaneous fission branches
Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca + 242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-n...
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| creator | Såmark-Roth, A. Cox, D. M. Rudolph, D. Sarmiento, L. G. Albertsson, M. Carlsson, B. G. Egido, J. L. Golubev, P. Heery, J. Yakushev, A. Åberg, S. Albers, H. M. Block, M. Brand, H. Calverley, T. Cantemir, R. Clark, R. M. Düllmann, Ch. E. Eberth, J. Fahlander, C. Forsberg, U. Gates, J. M. Giacoppo, F. Götz, M. Götz, S. Herzberg, R. -D. Hrabar, Y. Jäger, E. Judson, D. Khuyagbaatar, J. Kindler, B. Kojouharov, I. Kratz, J. V. Krier, J. Kurz, N. Lens, L. Ljungberg, J. Lommel, B. Louko, J. Meyer, C. -C. Mistry, A. Mokry, C. Papadakis, P. Parr, E. Pore, J. L. Ragnarsson, I. Runke, J. Schädel, M. Schaffner, H. Schausten, B. Shaughnessy, D. A. Thörle-Pospiech, P. Trautmann, N. Uusitalo, J. |
| description | Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca + 242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in 282Cn are examined in depth with the help of Geant4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions. |
| format | Article |
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C</jtitle><date>2023-02-06</date><risdate>2023</risdate><volume>107</volume><issue>2</issue><issn>2469-9985</issn><abstract>Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca + 242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in 282Cn are examined in depth with the help of Geant4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions.</abstract><cop>United States</cop><pub>American Physical Society (APS)</pub><orcidid>https://orcid.org/0000000332845748</orcidid></addata></record> |
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| source | American Physical Society Journals |
| subjects | alpha decay fission NUCLEAR PHYSICS AND RADIATION PHYSICS nuclear structure and decays |
| title | Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282$\mathrm{Cn}$, and spontaneous fission branches |
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