Quantum mechanical algebraic variational methods for inelastic and reactive molecular collisions

David W. Schwenke, Kenneth Haug, Meishan Zhao, Donald G. Truhlar, Yan Sun, John Zhang, Donald J. Kouri

Research output: Contribution to journalArticle

Abstract

The quantum mechanical problem of reactive or nonreactive scattering of atoms and molecules is formulated in terms of square-integrable (ℒ2) basis sets with variational expressions for the reactance matrix. We present and test several formulations, involving expansions of the wave function (the Schwinger variational principle) or amplitude density (a generalization of the Newton variational principle), single-channel or multichannel distortion potentials, and primitive or contracted basis functions. The test results, for inelastic and reactive atom-diatom collisions, are very encouraging, and we anticipate that the methods will be very useful for a variety of collision calculations and that they will allow the accurate quantal treatment of systems for which other available methods would be prohibitively expensive.

Original languageEnglish (US)
Pages (from-to)3202-3216
Number of pages15
JournalJournal of Physical Chemistry
Volume92
Issue number11
StatePublished - 1988

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molecular collisions
variational principles
reactance
Atoms
collisions
algae
Wave functions
newton
atoms
wave functions
Scattering
formulations
Molecules
expansion
matrices
scattering
molecules

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Schwenke, D. W., Haug, K., Zhao, M., Truhlar, D. G., Sun, Y., Zhang, J., & Kouri, D. J. (1988). Quantum mechanical algebraic variational methods for inelastic and reactive molecular collisions. Journal of Physical Chemistry, 92(11), 3202-3216.

Quantum mechanical algebraic variational methods for inelastic and reactive molecular collisions. / Schwenke, David W.; Haug, Kenneth; Zhao, Meishan; Truhlar, Donald G.; Sun, Yan; Zhang, John; Kouri, Donald J.

In: Journal of Physical Chemistry, Vol. 92, No. 11, 1988, p. 3202-3216.

Research output: Contribution to journalArticle

Schwenke, DW, Haug, K, Zhao, M, Truhlar, DG, Sun, Y, Zhang, J & Kouri, DJ 1988, 'Quantum mechanical algebraic variational methods for inelastic and reactive molecular collisions', Journal of Physical Chemistry, vol. 92, no. 11, pp. 3202-3216.
Schwenke, David W. ; Haug, Kenneth ; Zhao, Meishan ; Truhlar, Donald G. ; Sun, Yan ; Zhang, John ; Kouri, Donald J. / Quantum mechanical algebraic variational methods for inelastic and reactive molecular collisions. In: Journal of Physical Chemistry. 1988 ; Vol. 92, No. 11. pp. 3202-3216.
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