The theory of radical recombination luminescence communication 3. Kinetics of radical recombination luminescence

  • F. F. Vol'kenshtein
  • Yu. A. Markin
  • Yu. A. Sivov
  • V. V. Styrov
Physical Chemistry

Conclusions

  1. 1.

    The kinetic isotherms of radical recombination luminescence (RRL) in the case of excitation by atomic hydrogen are different for well cleaned and insufficiently cleaned surfaces. In the first case the kinetic curve rises, in the second it drops, which is explained by the presence on the insufficiently cleaned surface of remains of preliminarily chemisorbed hydrogen, existing in the charged state, which is gradually removed from the surface as a result of a recombination reaction.

     
  2. 2.

    After the cessation of RRL, the content of the charged form of chemisorption on the surface at first increases, but then begins to drop as a result of desorption. The initial rising branch of the curve is responsible for an approach of the system to electronic equilibrium, which remained disturbed in the process of RRL.

     
  3. 3.

    After cessation of the discharge, and then its subsequent turning on after a certain pause, a “memory effect” is observed: the nature of the kinetics of RRL depends on the duration of the pause. This is due to the fact that after the pause, depending on its duration, various amounts of chemisorbed hydrogen, participating in the RRL, remain on the surface.

     

Keywords

Hydrogen Recombination Atomic Hydrogen Charged State Chemisorption 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    V. A. Sokolov and A. N. Gorban', Luminescence and Absorption [in Russian], Nauka (1969).Google Scholar
  2. 2.
    V. V. Styrov and V. A. Sokolov, Zh. Prikl. Spektroskopii,8, 807 (1968).Google Scholar
  3. 3.
    F. F. Vol'kenshtein, A. N. Gorban', and V. A. Sokolov, Kinetika i Kataliz,4, 24 (1963).Google Scholar
  4. 4.
    F. F. Vol'kenshtein and O. Peshev, Kinetika i Kataliz,6, 95 (1965).Google Scholar
  5. 5.
    F. F. Vol'kenshtein, Izv. Akad. Nauk SSSR, Ser. Khim., 2449 (1970).Google Scholar
  6. 6.
    O. Peshev, Kinetika i Kataliz,7, 84 (1966).Google Scholar

Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • F. F. Vol'kenshtein
    • 1
    • 2
  • Yu. A. Markin
    • 1
    • 2
  • Yu. A. Sivov
    • 1
    • 2
  • V. V. Styrov
    • 1
    • 2
  1. 1.Institute of Physical ChemistryAcademy of Sciences of the USSRUSSR
  2. 2.Tomsk Polytechnic InstituteUSSR

Personalised recommendations