Nuclear masses near N=82 and their effects on r-process abundances*

We have performed for the first time a complete r-process mass sensitivity study in the N=82 region. We take into account how a change in a single nuclear mass propagates to influence important quantities of neighboring nuclei, including Q-values, neutron capture rates, photo-dissociation rates, beta-decay rates and the probability to emit neutrons. We identify key nuclei in the study whose mass has a substantial impact on final r-process abundances. We show that these nuclei are within reach of future radioactive ion beam measurements.