cross-section 13 - 7 20M20 4 перерiз 4 поперечний перерiз 4 elastic scattering 3 ionization 3 ionization cross-section 3 nucleon density distribution 3 пружне розсiяння 3 004.94 2 20M10 2 Green’s relations 2 UDC 621.039.58 2 amino acid 2 atom 2 autoionization 2 cross-sections 2 fusion cross-section 2 mass spectrum 2 modified Thomas–Fermi method 2 nucleus 2 nucleus-nucleus interaction potential 2 optical potential 2 representative cross-section 2 seismic margin factor 2 seismic margin resistance 2 seismic resistance 2 stresses 2 symmetric semigroup 2