Study of the L-shell ionisation of gold by 3.0-18.2 MeV nitrogen-ion bombardment

The angular distributions of the L x-ray line intensities of gold have been measured by nitrogen-ion bombardment in the 3.0-18.2 MeV energy region. From the measured data absolute subshell ionisation cross sections and the anisotropy parameter of the L_l x-ray line have been deduced. Comparing the experimental data with the first-order perturbation theories significant deviations have been found, especially for the L₂-subshell ionisation cross section and for the anisotropy parameter of the L_l x-ray line.