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With a new detector setup and the high-resolution performance of the fragmentseparator FRS at GSI we discovered 57 new isotopes in the atomic number rangeof 60$\leq Z \leq 78$: \nuc{159-161}{Nb}, \nuc{160-163}{Pm}, \nuc{163-166}Sm,\nuc{167-168}{Eu}, \nuc{167-171}{Gd}, \nuc{169-171}{Tb}, \nuc{171-174}{Dy},\nuc{173-176}{Ho}, \nuc{176-178}{Er}, \nuc{178-181}{Tm}, \nuc{183-185}{Yb},\nuc{187-188}{Lu}, \nuc{191}{Hf}, \nuc{193-194}{Ta}, \nuc{196-197}{W},\nuc{199-200}{Re}, \nuc{201-203}{Os}, \nuc{204-205}{Ir} and \nuc{206-209}{Pt}.The new isotopes have been unambiguously identified in reactions with a$^{238}$U beam impinging on a Be target at 1 GeV/u. The isotopic productioncross-section for the new isotopes have been measured and compared withpredictions of different model calculations. In general, the ABRABLA and COFRAmodels agree better than a factor of two with the new data, whereas thesemiempirical EPAX model deviates much more. Projectile fragmentation is thedominant reaction creating the new isotopes, whereas fission contributessignificantly only up to about the element holmium.

Discovery and Cross-Section Measurement of Neutron-Rich Isotopes in the Element Range from Neodymium to Platinum at the FRS