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arXiv · 1007.5506

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·L. Audouin·E. Casarejos·D. Cortina-Gil·T. Enqvist·B. Fernandez·A. R. Junghans·B. Jurado·P. Napolitani·J. Pereira·F. Rejmund·K. -H. Schmidt·O. Yordanov
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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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H. Alvarez-Pol, J. Benlliure, L. Audouin, E. Casarejos, D. Cortina-Gil, T. Enqvist, B. Fernandez, A. R. Junghans, B. Jurado, P. Napolitani, J. Pereira, F. Rejmund, K. -H. Schmidt, O. Yordanov. 2010-07-30. Production of new neutron-rich isotopes of heavy elements in fragmentation reactions of $^{238}$U projectiles at 1 A GeV. https://doi.org/10.1103/physrevc.82.041602

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