Effects of morphology in electron-stimulated desorption: O − from O 2 condensed on D 2O films grown at 15–150 K on Pt

• Published in: Surface science Vol. 436; no. 1; pp. L671 - L676
• Main Authors: Azria, R., Le Coat, Y., Lachgar, M., Tronc, M., Parenteau, L., Sanche, L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1999
• Subjects: Amorphous thin films; Desorption induced by electronic transitions (DIET); Dissociative electron attachment; Electron-stimulated desorption (ESD); Low energy electrons; Polycrystalline thin films; Water; Water; Polycrystalline thin films; Electron-stimulated desorption (ESD); Low energy electrons; Dissociative electron attachment; Amorphous thin films; Desorption induced by electronic transitions (DIET)
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/S0039-6028(99)00642-1

Electron-stimulated desorption of O − ions from O 2-covered multilayer ice films is investigated as a function of impact energy in the range 6–20 eV. The magnitude of the O − signal is found to strongly depend on temperature (15–150 K) of D 2O condensation on Pt, amount of condensed O 2 (0.1–4 ML) and D 2O film thickness (4–100 ML). The results are shown to be related to different morphologies of the ice layers.