We report on the first observation of the neutron-rich nucleus 131 Ag. This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams, including 134,135 Sn. The secondary beams were produced from induced fission reactions from a stable 238 U beam at 345 MeV/nucleon. Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity, time of flight, energy loss, and total kinetic energy.
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Wang et al. (2013) studied this question.
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