CNS @ George
Washington U.
CNS maintains
the world data base for experimental
NN etc. Phase shifts
They maintain
NN Nijmegen Potentials, Phase shifts, Deuteron Properties.
They have
potentials obtained by inverting experimental phase shifts.
Some general references:
M. Sebhatu and E. W.
Gettys, A Least Squares Method for the Extraction of Phase Shifts, Computers in Physics 3(5), 65 (1989)