Correlation of fractional monolayer oxygen determinations obtained by proton-excited X-ray and auger electron spectroscopy analysis of Fe surfaces.
Needham-PB Jr.; Driscoll-TJ; Rao-NG
Appl Phys Letters 1972 Nov; 21(10):502-505
Oxygen ka x-rays excited by the impact of 120-kev protons have been used to determine absolute oxygen surface coverages ranging from 4.8X1014 to 5.2X1015 atoms/cm2 on polycrystalline ion samples mounted in an auger spectroscopy system. Amplitudes of the electron- beam-excited oxygen kl2l2 auger electron spectra obtained from the samples corresponded linearly with the coverages determined by the proton-excited x-rays (pex). Estimates of the oxygen adatom coverages using the auger results and the theoretical approach of Bishop and Riviere were found to agree within a factor of 2.15 (+/- 0.22) With the pex-determined coverages.
OP; Journal Article
Applied Physics Letters