Determination of α–α interaction from experiment

Fixed-energy quantum inversion method is applied to determine model independent α -particle scattering potentials within the energy range between 0 and 50 MeV. Only experimentally allowed even phase shifts are used in the calculation. Detailed results exhibited at low and higher energies show up a large interaction domain, a thin strong Pauli-blocking part and a smooth merging region between the colliding particles. Over-all agreement between input and re-calculated phase shifts justifies the procedure.