IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Surface Science Tuesday Sessions
       Session SS3-TuP

Paper SS3-TuP6
Measurement and Quantitative Analysis of Photon or Electron Stimulated Desorption Yields of Solid Argon and Krypton

Tuesday, October 30, 2001, 5:30 pm, Room 134/135

Session: Adsorption/Desorption Poster Session
Presenter: T. Adachi, Gakushuin University, Japan
Authors: T. Adachi, Gakushuin University, Japan
T. Hirayama, Gakushuin University, Japan
M. Sakurai, Kobe University, Japan
I. Arakawa, Gakushuin University, Japan
Correspondent: Click to Email
Electron or photon irradiation of the surface of rare gas solids produces the electronic excitations which can be followed by the desorption of various kinds of particles. Investigation of the desorption characteristics such as desorption yields, kinetic energy distributions and angular distributions, will reveal the dynamics of the electronic excitations and relaxations in rare gas solids. We have reported the absolute photo-desorption yields of solid neon at the excitonic excitation energy range and shown that the yields were quantitatively explained by an internal sputtering mechanism.@footnote 1@ Here, we present the absolute desorption yields of the solid argon and krypton for the both case of photon impact and low energy electron impact. At the films thicker than 400 atomic layers, the absolute photo-desorption yields were about 1.5, 0.07, and 0.03 atoms/photon for neon, argon, and krypton, respectively, at the excitation energy of first order bulk exciton. In the case of 220 eV electron impact, the desorption yields were about 1 and 0.1 atoms/electron for argon and krypton, respectively. We will present the quantitative evaluation of the absolute desorption yields and these thickness dependencies for argon and krypton using the the classical molecular dynamics calculation results.@footnote 2,3@ @FootnoteText@ *T. Hirayama Present address: Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501 JAPAN. @footnote 1@ Arakawa, I., et al. Surf. Sci. 451, 136 (2000). @footnote 2@ Cui, S., et al. Surf. Sci. 207, 186 (1988). @footnote 3@ Dutkiewicz, L., et al. Nucl. Instr. Meth. B 101, 188 (1995).