On our campus we have an ion beam analysis lab. It is used for compositional analysis through the firing of alpha particles at MeV energies at target samples (RBS). From here it is a simple matter of back scattering kinematics to calculate atomic masses thereby giving the general composition of the test samples. There are many cases for overlap of the peaks in channels and to compensate some tables have been provided by the lab for finding scattering (peak) resonances of certain elements to increase mass resolution, however it is by no means complete. It would be helpful to have a more thorough listing of elements/alpha particle scattering resonance energies; my search has so far proven futile. Does anyone have a link or know of a good resource for this information?