The r-process element abundance with a realistic fission fragment mass distribution

Effect of the β‐delayed fission in r‐process abundance is investigated with a realistic model for the fission fragment mass distribution (FFMD). The data base for the FFMD is constructed based on the two‐center shell model and multi‐dimensional Langevin calculation. The β‐decay rates including neutron emission and β‐delayed fission are also newly calculated with 2nd version of the the gross theory. The differences appeared in the final element abundance calculated with and without fission process, with different β‐delayed fission rates are demonstrated.