Study of Intramolecular Dynamics of Highly Energised Small Molecules Using Laser Spectroscopic Techniques



Our research group at MIT is attempting to extract information about the structure and dynamics of small, gas phase molecules based on nontraditional experimental methods and statistical pattern recognition approaches to molecular spectra. The goal of one such study is to understand the fundamental excitation and decay mechanisms that govern intramolecular vibrational and electronic energy flow in small polyatomic molecules by studying triplet and / or singlet states of acetylene.1, 2, 3, 4 Another current study is focussed on the mechanisms of energy exchange between electronic and nuclear degrees of freedom, through the spectroscopic study of Rydberg states of diatomic molecules.5 In this paper our recent results and future plans for studies of triplet states of small polyatomic molecules will be reviewed and the other intramolecular dynamical studies will be mentioned briefly.


Triplet State Rydberg State Nuclear Degree Fundamental Excitation Photoexcited Triplet State 
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.
    Humphrey, S. J., Morgan, C. G., Wodtke, A. M., Cunningham, K. L., Drucker, S., and Field, R. W., 1997, Laser excited metastable states of acetylene in the 5.5-5.7 eV region. J. Chem. Phys. 107: 49–53.ADSCrossRefGoogle Scholar
  2. 2.
    Altunata, S., and Field, R. W., 2000, A statistical approach for the study of singlet-triplet interactions in small polyatomic molecules. J. Chem. Phys. 113: 6640–6651.ADSCrossRefGoogle Scholar
  3. 3.Thom, R. L., Mishra, A. P., and Field, R. W. (to be published).Google Scholar
  4. 4.
    Jacobson, M. P., and Field, R. W., 2000, Acetylene at the threshold of isomerization. J. Phys. Chem.A 114: 6557–6561.Google Scholar
  5. 5.
    Gittins, C. M., Harris, N. A. Hui, M. and Field, R. W., 2001, Ionization detected optical-optical double resonance spectroscopic studies of moderate energy Rydberg states of calcium monofluoride. Can. J. Phys. 79: 247–286.ADSGoogle Scholar
  6. 6. Altunata, S., Cunningham, K. L., Canagaratna M., Thom, R., and Field, R. W., The mechanism of surface electron ejection by laser excited metastable molecules. J. Phys. Chem.A (in press).Google Scholar
  7. 7.
    Altunata, S., and Field, R. W., 2001, An assumption-violating application of the Lawrance-Knight deconvolution procedure: A retrieval of electronic coupling mechanisms underlying complex spectra. J. Chem. Phys. 114: 6557–6561.ADSCrossRefGoogle Scholar
  8. 8.
    Hagstrum, H. D., 1954, Auger ejection of electrons from tungsten by noble gas ions. Phys. Rev. 96: 325–335.ADSCrossRefGoogle Scholar
  9. 9.
    Hotop, H., 1996, Detection of metastable atoms and molecules. Experimental Methods in the Physical Sciences 29B: 191–215.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2002

Authors and Affiliations

  1. 1.Department of Chemistry and George R. Harrison Spectroscopy LaboratoryMassachusetts Institute of TechnologyCambridgeUSA

Personalised recommendations