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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0
Reliable (reported energy within 300 eV of a reference energy)
Comment:
0.33 ML Cs/Al(111)-(2x2). The Al(111) crystal was cleaned by cycles of Ar+ ion bombardment and annealing (T = ~700 K). The spectra were recorded at normal emission.