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

H. Alvarez-Pol , J. Benlliure , L. Audouin , E. Casarejos , D. Cortina-Gil , T. Enqvist , B. Fernandez , A. R. Junghans

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B. Jurado P. Napolitani J. Pereira F. Rejmund K.-H. Schmidt O. Yordanov

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classification ⚛️ nucl-ex

keywords nucleiproductionheavyneutron-richfragmentationprojectilesreactionsallowed

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

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