L and M-shell ionization of heavy targets

C. C MONTANARI; D. M. MITNIK; J. E. MIRAGLIA

Belfast

Congreso; XXVII Internacional Conference on Photonic, Electronic and Atomic Collisions; 2011

International Scientific Committee of the XXVII Internacional Conference on Photonic, Electronic and Atomic Collisions

We present a theoretical study on the inner-shell ionization of Au, Pb, and Bi. A collective response model, the shellwise local plasma approximation (SLPA), is employed, which works within the dielectric formalism. The wave functions and binding energies were obtained in fully-relativistic way by solving numerically the Dirac equation. The theoretical  results describe nicely the experimental data for M-shell ionization of Au and Bi above 2MeV/amu, and for L-shell ionization of Au and Pb above 10 MeV/amu. The SLPA tends to underestimate the data for energies below the range of validity of the model and approach to them for higher energies.