Reliable (reported energy within 300 eV of a reference energy)
Comment:
0.33 ML Rb/Al(111)*Aij, where Aij is a matrix with A11 = 1, A12 = 1, A21 = 5, and A22 = -6. The Al(111) crystal was cleaned by cycles of Ar+ ion bombardment and annealing (T = ~700 K). The spectra were recorded at normal emission.