http://repository.iitr.ac.in/handle/123456789/25363
Title: | New Short-Lived Isotope U 221 and the Mass Surface Near N=126 |
Authors: | Khuyagbaatar J. Yakushev A. Düllmann C.E. Ackermann D. Andersson L.-L. Block M. Brand H. Cox D.M. Even J. Forsberg U. Golubev P. Hartmann W. Herzberg R.-D. Heßberger F.P. Hoffmann J. Hübner A. Jäger E. Jeppsson J. Kindler B. Kratz J.V. Krier J. Kurz N. Lommel B. Maiti, Moumita Minami S. Mistry A.K. Mrosek C.M. Pysmenetska I. Rudolph D. Sarmiento L.G. Schaffner H. Schädel M. Schausten B. Steiner J. De Heidenreich T.T. Uusitalo J. Wegrzecki M. Wiehl N. Yakusheva V. |
Published in: | Physical Review Letters |
Abstract: | Two short-lived isotopes U221 and U222 were produced as evaporation residues in the fusion reaction Ti50+Yb176 at the gas-filled recoil separator TASCA. An α decay with an energy of Eα=9.31(5) MeV and half-life T1/2=4.7(7) μs was attributed to U222. The new isotope U221 was identified in α-decay chains starting with Eα=9.71(5) MeV and T1/2=0.66(14) μs leading to known daughters. Synthesis and detection of these unstable heavy nuclei and their descendants were achieved thanks to a fast data readout system. The evolution of the N=126 shell closure and its influence on the stability of uranium isotopes are discussed within the framework of α-decay reduced width. © 2015 American Physical Society. |
Citation: | Physical Review Letters, 115(24) |
URI: | https://doi.org/10.1103/PhysRevLett.115.242502 http://repository.iitr.ac.in/handle/123456789/25363 |
Issue Date: | 2015 |
Publisher: | American Physical Society |
Keywords: | Fusion reactions Nuclear fuels Nuclear reactions Readout systems Thermonuclear reactions Alpha decay Evaporation residues Gas-filled recoil separator Half lives Heavy nucleus Shell closures Uranium isotopes Isotopes |
ISSN: | 319007 |
Author Scopus IDs: | 14826956100 7004061403 6602625278 55143078600 56021645400 8842274300 8915069900 43060973800 36117802600 55944819000 6602398402 7201802182 7005241243 7003327706 35069598900 7004099613 7102107431 55140590400 6602738844 7004752304 36118124500 26643529500 8252235900 57215382247 55627334600 55857155900 57000484200 12244984500 7101736042 54884798400 7003879236 8956603900 6602502353 7201651824 56242198300 7006528106 12241409400 6602549169 55792738600 |
Author Affiliations: | Khuyagbaatar, J., Helmholtz Institute Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Yakushev, A., Helmholtz Institute Mainz, Mainz, 55099, Germany, 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, GANIL, CEA/DSM-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, Caen Cedex 5, F-14076, France Andersson, L.-L., Helmholtz Institute Mainz, Mainz, 55099, Germany Block, M., Helmholtz Institute Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany Brand, H., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Cox, D.M., University of Liverpool, Liverpool, L69 7ZE, United Kingdom Even, J., Helmholtz Institute Mainz, Mainz, 55099, Germany, TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada Forsberg, U., Lund University, Lund, 22100, Sweden Golubev, P., Lund University, Lund, 22100, Sweden 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 Hoffmann, J., 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 Jeppsson, J., Lund University, Lund, 22100, Sweden 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 Lommel, B., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Maiti, M., Saha Institute of Nuclear Physics, Kolkata, 700064, India, Indian Institute of Technology Roorkee, Roorkee, 247667, India Minami, S., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Mistry, A.K., University of Liverpool, Liverpool, L69 7ZE, United Kingdom Mrosek, C.M., Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany Pysmenetska, I., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Rudolph, D., Lund University, Lund, 22100, Sweden Sarmiento, L.G., Lund University, Lund, 22100, Sweden Schaffner, H., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Schädel, M., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Schausten, B., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Steiner, J., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany De Heidenreich, T.T., GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, 64291, Germany Uusitalo, J., University of Jyväskylä, Jyväskylä, 40351, Finland Wegrzecki, M., Institute of Electron Technology, Warsaw, 02-668, Poland Wiehl, N., Helmholtz Institute Mainz, Mainz, 55099, Germany, Johannes Gutenberg-Universität Mainz, Mainz, 55099, Germany Yakusheva, V., Helmholtz Institute Mainz, Mainz, 55099, Germany |
Funding Details: | Science and Technology Facilities Council, STFC: ST/F012039/1, ST/J000094/1, ST/L005670/1, ST/L005689/1 |
Appears in Collections: | Journal Publications [PH] |
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