Vibrational Predissociation of the He - I2 (B, v = 34) - Ne Complex: Sequential Mechanism and Direct Dissociation

  • P. Villarreal
  • S. Miret-Artés
  • J. Campos-Martínez
  • G. Delgado-Barrio
Part of the NATO ASI Series book series (NSSB, volume 227)


The competition between direct dissociation of He I 2 Ne, producing either a diatomic fragment HeNe or separated rare atoms plus I2 and sequential processes in which a rare atom and a triatomic complex emerge in a first step, is estimated by means of quantal approximations resting on the Fermi’s Golden Rule. Assuming a non rotating I2 molecule and restricting the rare atoms to move on a perpendicular plane to its axis, the four-body problem is reduced to an effective three-body one after a diabatic separation of the iodine vibration is performed. Bond coordinates are used to describe sequential mechanisms as well as double continuum fragmentation, while Jacobi coordinates appear as more convenient to analyse the dissociation into two diatomic, 12 and He — Ne,fragments.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    S.R. Hair, J.I. Cline, C.R. Bieler, and K.C. Janda, J. Chem. Phys. 90, 2935(1989).Google Scholar
  2. [2]
    G.A. Natanson, G.S. Ezra, G. Delgado-Barrio, and R.S. Berry, J. Chem. Phys. 81, 3400 (1984).ADSCrossRefGoogle Scholar
  3. Ibid 84, 2035 (1986).Google Scholar
  4. [3]
    P. Villarreal, A. Varadé, and G.Delgado-Barrio, J. Chem. Phys. 90, 2684 (1989).ADSGoogle Scholar
  5. [4]
    P. Villarreal, S. Miret-Artés, O. Roncero, S. Serna, J. Campos-Martínez, and G.Delgado-Barrio, submitted to J. Chem. Phys.Google Scholar
  6. [5]
    M. Aguado, P. Villarreal, G.Delgado-Barrio, P. Mareca, and J.A. Beswick, Chem. Phys. Lett. 102, 227 (1983).ADSCrossRefGoogle Scholar
  7. F.A. Gianturco, A. Palma, P. Villarreal, G.Delgado-Barrio, and O.Roncero, J. Chem. Phys. 87, 1054 (1987).ADSCrossRefGoogle Scholar
  8. Y.S. Kim, M. Hutchinson, and T.F. George, J. Chem. Phys. 86, 5515 (1987).ADSCrossRefGoogle Scholar
  9. [6]
    R.B. Gerber, and M.A. Ratner, Advan. Chem. Phys. LXX(1), 97 (1988).Google Scholar
  10. [7]
    J.A. Beswick, and G. Delgado-Barrio, J. Chem. Phys. 73, 3653 (1980).ADSCrossRefGoogle Scholar
  11. [8]
    G. Delgado-Barrio, P. Villarreal, A. Vardé, N. Martin, and A. Garda-Vela in Structure and Dynamics of Weakly Bound Molecular Complexes, NATO ASI Series C 212 p. 573, A.Weber Ed. ( Reidel, Dordrecht, 1987 ).Google Scholar
  12. [9]
    G. Delgado-Barrio, A.M. Cortina, A.Varadé, P. Mareca, P. Villarreal, and S. Miret-Artés, J. Compt. Chem. 7, 208 (1986).CrossRefGoogle Scholar
  13. [10]
    O. Roncero, S. Miret-Artés, G. Delgado-Barrio, and P. Villarreal, J. Chem. Phys. 85, 2084 (1986).ADSCrossRefGoogle Scholar
  14. [11]
    A.M. Arthurs, and A. Dalgarno, Proc. Roy. Soc. London, A 256 540 (1960).Google Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • P. Villarreal
    • 1
  • S. Miret-Artés
    • 1
  • J. Campos-Martínez
    • 1
  • G. Delgado-Barrio
    • 1
  1. 1.Instituto de Estructura de la MateriaC.S.I.CMadridSpain

Personalised recommendations