Abstract
A two-electron model potential method is proposed to compute diabatic electronic excited states for Na2. The configuration space is first divided into two subspaces corresponding to singly and doubly excited configurations respectively. Next this partition is modified to ensure a correct dissociation limit for the ground state. The matrix element of the electronic Hamiltonian between the two subspaces can be extrapolated along a Rydberg series up to the ionization continuum. The first order M.Q.D.T. treatment of Giusti (1980) is then used to estimate the cross-sections for the reaction Na(3p)+Na(3p)→Na +2 +e −, considering various symmetries of the intermediate Na2 molecule. A marked selectivity in favour of the3Σ + u symmetry is found and the estimated cross-section σ ∼ 5 Å2 for a collision energy of 0.05 eV is in satisfactory agreement with the experimental results.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Bezuglov, N.N., Klucharev, A.N., Sheverev, V.A.: J. Phys. B: At. Mol. Phys.20, 2497 (1987)
Huennekens, J., Gallagher, A.: Phys. Rev. A28, 1276 (1983)
Bonnano, R., Boulmer, J., Weiner, J.: Phys. Rev. A28, 604 (1983)
Kircz, J.G., Morgenstern, R., Nienhuis, G.: Phys. Rev. Lett.48, 610 (1982)
Meijer, H.A.J., Pelgrim, T.J.C., Heideman, H.G.M., Morgenstern, R., Andersen, N.: Phys. Rev. Lett.59, 2939 (1987) and references therein
Wang, M.X., Weiner, J.: Phys. Rev. A42, 675 (1990)
Jones, D.M., Dahler, J.S.: Phys. Rev. A35, 3688 (1987)
Weiner, J., Masnou-Seeuws, F., Giusti-Suzor, A.: Adv. At. Mol. Opt. Phys.26, 209 (1989)
Nienhuis, G.: Electronic and Atomic Collisions. p. 569. Invited papers of the XIV ICPEAC, Lorents, D.E., Meyerhof, W.E., Peterson, J.R. (eds.). New York: North Holland 1986
Jeung, G.H.: J. Phys. B: At. Mol. Phys.16, 4289 (1983)
Jeung, G.H.: Phys. Rev. A35, 26 (1987)
Henriet, A., Masnou-Seeuws, F.: J. Phys. B: At. Mol. Phys.21, L339 (1988)
Henriet, A., Masnou-Seeuws, F.: J. Phys. B: At. Mol. Phys.23, 219 (1990)
Jungen, C., Masnou-Seeuws, F.: J. Phys. B: At. Mol. Phys. (to be published)
Giusti, A.: J. Phys. B: At. Mol. Phys.13, 3867 (1980)
Urbain, X.: (1990) Thesis Louvain La Neuve (unpublished)
O'Malley, T.: Adv. At. Mol. Phys.7, 223 (1971)
Bethe, H.A.: Intermediate quantum mechanics. p. 29. New York: Benjamin 1964
Henriet, A.: 1988 Thesis Orsay (Unpublished)
Sidis, V., Lefebvre-Brion, H.: J. Phys. B: At. Mol. Phys.4, 1040 (1971)
Norcross, D.W.: Phys. Rev. Lett.32, 192 (1974)
Dulieu, O.: Z. Phys. D-Atoms, Molecules and Clusters13, 17–24 (1989)
Meijer, H.A.J.: Z. Phys. D — Atoms, Molecules and Clusters17, 257 (1990)
Dulieu, O., Giusti-Suzor, A., Masnou-Seeuws, F.: J. Phys. B.: At. Mol. Phys. (to be published)
Geltman, S.: J. Phys. B: At. Mol. Phys.21, L735 (1988)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Henriet, A., Masnou-Seeuws, F. & Dulieu, O. Diabatic representation for the excited states of the Na2 molecule: application to the associative ionization reaction between two excited sodium atoms. Z Phys D - Atoms, Molecules and Clusters 18, 287–298 (1991). https://doi.org/10.1007/BF01437083
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01437083