Line Selective Excitation of Ethylene with CO2 Laser Light and Vibrational Relaxation

  • X. de Hemptinne
  • D. De Keuster
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 6)


Conventional I.R. spectroscopy yields for ethylene a very strong absorption band (υ7) in the region of emission of the CO2 laser. High resolution spectroscopy shows however [1] that most vibro- rotational transitions do not coincide closely with the laser lines, so that strong absorption should not be expected. Nevertheless all CO2 lines may excite ethylene even at low pressure.


Laser Line Strong Absorption Band Rotational Transition Vibrational Relaxation Focus Laser Beam 
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  1. [1]
    F. Herlemont, M. Lyszyk, J. Lemaire, C. Lambeau and A. Fayt, J. Mol. Phys. in pressGoogle Scholar
  2. [2]
    J. Bastiaens, D. De Keuster and X. de Hemptinne, in Lasers in Chemistry, Edited by M. A. West, Elsevier 1977,page 265Google Scholar
  3. [3]
    R. S. Mulliken and C. C. J. Roothaan, Chem. Rev. 41 219 (1947)CrossRefGoogle Scholar
  4. [4]
    N. W. Ressler and R. W. Crain, Appl. Phys. Lett., 20, 42 (1972)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1979

Authors and Affiliations

  • X. de Hemptinne
    • 1
  • D. De Keuster
    • 1
  1. 1.Chemistry DepartmentKatholieke Universiteit LeuvenHeverleeBelgium

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