Reliable (reported energy within 300 eV of a reference energy)
Comment:
The Fe foil was exposed to 130 Torr O2 for 10 min at 573 K. The substrate was cleaned by repeated cycles of Ar+ ion bombardment (Ep = 3 keV, j = 1.7 microamperes/cm2) and subsequently annealed (T = 923 K). FAT mode.