The ^{144}Sm-\alpha optical potential at astrophysically relevant   energies derived from ^{144}Sm(\alpha,\alpha)^{144}Sm elastic scattering
  For the determination of the $^{144}Sm-\alpha$ optical potential we measured the angular distribution of $^{144}Sm(\alpha,\alpha)^{144}Sm$ scattering at the energy $E_{lab} = 20 MeV$ with high accuracy. Using the known systematics of $\alpha$-nucleus optical potentials we are able to derive the $^{144}Sm-\alpha$ optical potential at the astrophysically relevant energy $E_{c.m.} = 9.5 MeV$ with very limited uncertainties. 
P. Mohr, T. Rauscher, H. Oberhummer, Z. M\'at\'e, Zs. F\"ul\"op, and   E. Somorjai, M. Jaeger, and G. Staudt