L1, L2 and L3 subshell ionization cross sections for elements with 71 ⩽ Z ⩽ 80 for protons of 0.5 to 3.0 MeV

We present in this contribution theoretical predictions of the Li (i = 1, 2, 3) subshells ionization cross sections within the ECPSSR theory for elements with atomic number 71 ⩽ Z ⩽ 80 for protons with energy of 0.5 to 3.0 MeV. These predictions are compared to the experimental data reported by Orlic et al. [At. Data Nucl. Data Tables 56 (1994) 159] and by Sokhi and Crumpton [At. Data Nucl. Data Tables 30 (1984) 49] by plotting the ratio S = σexp/σECPSSR as a function of the reduced velocity parameter for each individual subshell L1, L2 and L3. By fitting separately the ratio S, we deduced reference ionization cross sections for each Li subshell. On the other hand, we report empirical ionization cross sections and make a comparison between the reference cross sections, the empirical cross sections reported in this paper and those reported by Sow et al. [Nucl. Instr. and Meth. B 75 (1993) 58] and by Orlic et al. [Int. J. PIXE 4 (4) (1994) 217]