Global calculations of gamma-ray strength functions with the Skyrme finite amplitude method

Electromagnetic multipole responses, or gamma-ray strength functions (γSFs), are key ingredients in the studies of the structure, decay, and reactions of atomic nuclei. Within the framework of the nuclear density functional theory, the introduction of the finite amplitude method (FAM) has made it feasible to perform large-scale calculations of the nuclear linear response in heavy deformed nuclei. In this talk I will present our recent calculations of the E1, E2, and M1 responses throughout the nuclear chart, with even-even, odd-A and odd-odd nuclei included. Based on our results, we study the variations of giant resonances and polarizabilities as neutron and proton numbers change, and observe the correlations between responses and ground-state shapes. The theoretical database of γSFs we build in this work, together with the beta-decay database obtained with the same method and functional parameters, will provide valuable microscopic, self-consistent nuclear inputs for nucleosynthesis simulations.