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.
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Submitted on : Monday, August 2, 2010 - 6:11:09 PM
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H. Alvarez-Pol, J. Benlliure, L. Audouin, E. Casarejos, D. Cortina-Gil, et al.. Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of $^{238}$U projectiles at 1 A GeV. Physical Review C, American Physical Society, 2010, 82, pp.041602(R). ⟨10.1103/PhysRevC.82.041602⟩. ⟨in2p3-00508290⟩

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