Partial photoionization cross-sections for CO2 and N2O from 20 to 6OeV

Measurements of the partial photoionization cross-sections of the molecules CO₂ and N₂O are reported for the energy range 20–6OeV. Large contributions to the photoionization cross-section from multiple electron transitions are observed, particularly above 40eV, in accord with the results of recent many-body Green's function-calculations. The cross-section for total photabsorption as well as the ionization efficiency have also been measured.