Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of $^{238}\mathrm{U}$ projectiles at 1$A$ GeV

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Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of ${}^{238}U$ projectiles at 1 $A$ GeV

H. Alvarez-Pol, J. Benlliure, E. Casarejos, L. Audouin, D. Cortina-Gil, T. Enqvist, B. Fernández-Domínguez, A. R. Junghans, B. Jurado, P. Napolitani, J. Pereira, F. Rejmund, K.-H. Schmidt, and O. Yordanov

Phys. Rev. C 82, 041602(R) – Published 28 October 2010

Abstract

The production of heavy neutron-rich nuclei has been investigated using cold-fragmentation reactions of ${}^{238}U$ projectiles at relativistic energies. The experiment performed at the high-resolving-power magnetic spectrometer Fragment Separator at GSI made it possible to identify $40$ new heavy neutron-rich nuclei: ${}^{205}{Pt}$ , ${}^{207 - 210}{Au}$ , ${}^{211 - 216}{Hg}$ , ${}^{214 - 217}{Tl}$ , ${}^{215 - 220}{Pb}$ , ${}^{219 - 224}{Bi}$ , ${}^{223 - 227}{Po}$ , ${}^{225 - 229}{At}$ , ${}^{230, 231}{Rn}$ , and ${}^{233}{Fr}$ . The production cross sections of these nuclei were also determined and used to benchmark reaction codes that predict the production of nuclei far from stability.

Received 30 July 2010

DOI:https://doi.org/10.1103/PhysRevC.82.041602

Authors & Affiliations

H. Alvarez-Pol^1,*, J. Benlliure¹, E. Casarejos^1,†, L. Audouin², D. Cortina-Gil¹, T. Enqvist^3,‡, B. Fernández-Domínguez¹, A. R. Junghans⁴, B. Jurado⁵, P. Napolitani^2,3, J. Pereira^1,§, F. Rejmund⁶, K.-H. Schmidt³, and O. Yordanov^3,∥

¹Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
²IPN, IN2P3-CNRS, Université Paris-Sud 11, UMR 8608, F-91406 Orsay, France
³GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany
⁴Forschungszentrum Dresden-Rossendorf, D-01328 Dresden, Germany
⁵Université Bordeaux I, CNRS/IN2P3, CENBG, BP 120, F-33175 Gradignan, France
⁶GANIL CEA/DSM-CNRS/IN2P3, BP 55027, F-14076 Caen, France

^*hector.alvarez@usc.es
^†Present address: Universidade de Vigo, E-36310 Vigo, Spain.
^‡Present address: CUPP project, P.O. Box 22, FIN-86801 Pyhäsalmi, Finland.
^§Present address: NSCL, Michigan State University, East Lansing, MI 48824, USA.
^∥Present address: INRNE, 72 Tzarigradsko chausee, BG-1784 Sofia, Bulgaria.

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Vol. 82, Iss. 4 — October 2010

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Physical Review C

covering nuclear physics

Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of ${}^{238}U$ projectiles at 1 $A$ GeV

H. Alvarez-Pol, J. Benlliure, E. Casarejos, L. Audouin, D. Cortina-Gil, T. Enqvist, B. Fernández-Domínguez, A. R. Junghans, B. Jurado, P. Napolitani, J. Pereira, F. Rejmund, K.-H. Schmidt, and O. Yordanov

Phys. Rev. C 82, 041602(R) – Published 28 October 2010

Abstract

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Physical Review C

covering nuclear physics

Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of U238 projectiles at 1A GeV

H. Alvarez-Pol, J. Benlliure, E. Casarejos, L. Audouin, D. Cortina-Gil, T. Enqvist, B. Fernández-Domínguez, A. R. Junghans, B. Jurado, P. Napolitani, J. Pereira, F. Rejmund, K.-H. Schmidt, and O. Yordanov

Phys. Rev. C 82, 041602(R) – Published 28 October 2010

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Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of ${}^{238}U$ projectiles at 1 $A$ GeV