We have measured fragment cross-sections of projectile fragmentation reactions using primary beams of 40 Ca, 48 Ca, 58 Ni, and 64 Ni at 140 MeV/nucleon on 9 Be and 181 Ta targets. The cross-sections were obtained by integrating the momentum distributions of isotopes with Z 5 measured in the A1900 fragment separator. We compare the extracted cross-sections to the predictions of the empirical parametrization of fragmentation cross-sections (EPAX).
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