Low-Energy ESD of Metastable Atoms from Ar, Kr, Xe(111) Condensed Films
Thin condensed films of rare-gas atoms (Ar, Kr, Xe), grown on a Pt(111) crystal, have been exposed to monochromatic low-energy electrons (E = 5 –; 25 eV, ΔE = 60 meV). Desorbed metastable atoms are abundant for Ar films, and several desorption components are identified based on the information on flight time and desorption angle. With Kr and Xe, a significant metastable atom signal is obtained only by covering a Kr film with a monolayer of Xe. Various desorption mechanisms are discussed.
KeywordsExcited Atom Condensed Film Metastable Atom Electron Monochromator Metastable Particle
Unable to display preview. Download preview PDF.
- 1.N. Schwentner, E.-E. Koch, and J. Jortner: Electronic Excitations in Condensed Rare Gases (Springer, Berlin 1985).Google Scholar
- 2.G. Zimmerer: in Excited-State Spectroscopy in Solids, eds. U. M. Grassano and N. Terzi (North-Holland, Amsterdam 1987).Google Scholar
- 3.G. Leclerc, A. D. Bass, A. Mann, and L. Sanche: Phys. Rev. B (in press).Google Scholar
- 4.A. Mann, G. Leclerc, and L. Sanche: to be published.Google Scholar
- 9.I. Arakawa and M. Sakurai: in Desorption Induced by Electronic Transitions DIET TV, eds. G. Betz and P. Varga (Springer, Berlin 1990).Google Scholar