ENERGY DEPENDENCE OF PROTON INDUCED L-SUBSHELL IONIZATION CROSS SECTION RATIOS FOR Ag A. M. COSTA, F. PARENTE, M. T. COSTA-LIMA et M. T. RAMOSJ. Phys. Colloques, 48 C9 (1987) C9-255-C9-258DOI: https://doi.org/10.1051/jphyscol:1987943