Centrifugal-sudden hyperspherical study of Cl + HCl → ClH + Cl reaction dynamics on 'tight-bend' and 'loose-bend' potential energy surfaces

D. Sokolovski, J. N L Connor, George C Schatz

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

A centrifugal-sudden hyperspherical (CSH) quantum calculation has been carried out for the three-dimensional reaction Cl + HCl → ClH + Cl, using the extended London-Eyring-Polanyi-Sato (LEPS) potential energy surface no. 3 of Persky and Kornweitz (PK3), which is an example of a 'tight-bend' surface. Quantities calculated include: state-to-state and cumulative reaction probabilities, and differential and integral cross sections. Comparison is made with CSH results from the 'loose-bend' LEPS surface of Bondi-Connor-Manz-Römelt (BCMR). Three simple models are used to understand qualitatively trends in the computed results from the PK3 and BCMR surfaces: (1) a classical hard-sphere model, which describes collisions of the reactants, (2) a J shift approximation for the reaction probabilities, where J is the total angular momentum quantum number, (3) a semi-classical optical model for the reactive differential cross sections. In addition, the angular distributions are analysed by an (asymptotic) nearside-farside (NF) theory in order to extract their physical content. The NF analysis shows that high frequency oscillations in the forward-angle scattering are an interference effect caused by a resonance.

Original languageEnglish
Pages (from-to)461-476
Number of pages16
JournalChemical Physics
Volume207
Issue number2-3 SPEC. ISS.
Publication statusPublished - Jul 1 1996

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Potential energy surfaces
potential energy
Angular distribution
Angular momentum
cross sections
Scattering
quantum numbers
angular distribution
angular momentum
trends
interference
oscillations
collisions
shift
approximation
scattering

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Centrifugal-sudden hyperspherical study of Cl + HCl → ClH + Cl reaction dynamics on 'tight-bend' and 'loose-bend' potential energy surfaces. / Sokolovski, D.; Connor, J. N L; Schatz, George C.

In: Chemical Physics, Vol. 207, No. 2-3 SPEC. ISS., 01.07.1996, p. 461-476.

Research output: Contribution to journalArticle

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