Translationally Strongly Non-equilibrium Hot Atom Assemblies and Chemical Laser Pumping

  • A. Ya. Temkin
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 15)


Some kinds of chemical lasers are pumped by hot atom reactions with bulk molecules. The relatively high kinetic energy of the hot atoms favors the prevalence of vibrotationally excited product molecules over the non-excited ones, i. e. the creation of the inverse population of the product molecules’ assembly. These hot atoms are produced by the (laser) photolysis of another bulk component or by the disintegration of its molecules by particle beams[1]. So the kinetics of such kind of chemical lasers must include the kinetics of hot atom transport and reactions. Hot atom assemblies are strongly non-equilibrium, so in the present paper we apply to this problem the method of strongly non-equilibrium chemical kinetics proposed in our previous works (see, for ex. ref.[2]. This method is based on the use of the multi-group approximation for the distribution of hot atoms with respect to their kinetic energy[3]. In our previous work[4] the two-group approximation was used to study the chemical laser pumping: all hot atoms belonged to the upper group and all others to the thermal group. In ref.[4] it was recommended to repeat these calculations, but in three-group approximation when two groups are “hot” and the third one is the thermal. That is the subject of the present paper.


Energy Group Chemical Laser Group Constant Elastic Energy Loss Thermal Group 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    K.L. Kompa, Chemical Lasers, Fortschritte der chemischen Forschung, Band 37 ( Springer-Verlag, Berlin-Heidelberg-New York, 1973 ).Google Scholar
  2. 2.
    A.Ya. Temkin, Chem. Phys. 83, 105 (1984).CrossRefADSGoogle Scholar
  3. 3.
    G.I. Bell and S. Glasstone, Nuclear Reactor Theory ( Van Nostrand-Reinhold, New York, 1970 ).Google Scholar
  4. 4.
    A.Ya. Temkin, Chem. Phys. 107, 445 (1986) (in press).CrossRefADSGoogle Scholar
  5. 5.
    K.L. Kompa, J.H. Parker and G.C. Pimentel, J. Chem. Phys. 49, 4257 (1986).CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • A. Ya. Temkin
    • 1
  1. 1.Department of Interdisciplinary Studies, Faculty of EngineeringTel-Aviv UniversityRamat-Aviv, Tel-AvivIsrael

Personalised recommendations