We have elastic scattering excitation function data in tabular form and want to obtain partial wave scattering phase shift data for each partial wave say l=0, 1, 2....whats the process to do so and is their any code available to do so
Could you be more specific, for example the function that you call "excitation function data" is complex?
There are several cases if the elastic scattering is nonrelativistic. See for example: Landau and Lifshitz Vol. 3 Quantum Mechanics, non relativistic theory, chapter VII. Pergamon 1965.