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

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 FRS at GSI allowed to identify 45 new heavy neutron-rich nuclei: ${}^{205}$Pt, ${}^{207-210}$Au, ${}^{211-216}$Hg, ${}^{213-217}$Tl, ${}^{215-220}$Pb, ${}^{219-224}$Bi, ${}^{221-227}$Po, ${}^{224-229}$At, ${}^{229-231}$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.

5 pages, 2 figures

References in corpus (2)

• Identification of 45 New Neutron-Rich Isotopes Produced by In-Flight Fission of a 238U Beam at 345 MeV/nucleon
• Production of medium-mass neutron-rich nuclei in reactions induced by 136Xe projectiles at 1 A GeV on a beryllium target

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