S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering

Manthe U, Ellerbrock R (2016)
JOURNAL OF CHEMICAL PHYSICS 144(20): 204119.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
A new approach for the quantum-state resolved analysis of polyatomic reactions is introduced. Based on the singular value decomposition of the S-matrix, energy-dependent natural reaction channels and natural reaction probabilities are defined. It is shown that the natural reaction probabilities are equal to the eigenvalues of the reaction probability operator [U. Manthe and W. H. Miller, J. Chem. Phys. 99, 3411 (1993)]. Consequently, the natural reaction channels can be interpreted as uniquely defined pathways through the transition state of the reaction. The analysis can efficiently be combined with reactive scattering calculations based on the propagation of thermal flux eigenstates. In contrast to a decomposition based straightforwardly on thermal flux eigenstates, it does not depend on the choice of the dividing surface separating reactants from products. The new approach is illustrated studying a prototypical example, the H + CH4 -> H-2 + CH3 reaction. The natural reaction probabilities and the contributions of the different vibrational states of the methyl product to the natural reaction channels are calculated and discussed. The relation between the thermal flux eigenstates and the natural reaction channels is studied in detail. Published by AIP Publishing.
Erscheinungsjahr
2016
Zeitschriftentitel
JOURNAL OF CHEMICAL PHYSICS
Band
144
Ausgabe
20
Art.-Nr.
204119
ISSN
0021-9606
eISSN
1089-7690
Page URI
https://pub.uni-bielefeld.de/record/2904699

Zitieren

Manthe U, Ellerbrock R. S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering. JOURNAL OF CHEMICAL PHYSICS. 2016;144(20): 204119.
Manthe, U., & Ellerbrock, R. (2016). S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering. JOURNAL OF CHEMICAL PHYSICS, 144(20), 204119. doi:10.1063/1.4952478
Manthe, Uwe, and Ellerbrock, Roman. 2016. “S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering”. JOURNAL OF CHEMICAL PHYSICS 144 (20): 204119.
Manthe, U., and Ellerbrock, R. (2016). S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering. JOURNAL OF CHEMICAL PHYSICS 144:204119.
Manthe, U., & Ellerbrock, R., 2016. S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering. JOURNAL OF CHEMICAL PHYSICS, 144(20): 204119.
U. Manthe and R. Ellerbrock, “S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering”, JOURNAL OF CHEMICAL PHYSICS, vol. 144, 2016, : 204119.
Manthe, U., Ellerbrock, R.: S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering. JOURNAL OF CHEMICAL PHYSICS. 144, : 204119 (2016).
Manthe, Uwe, and Ellerbrock, Roman. “S-matrix decomposition, natural reaction channels, and the quantum transition state approach to reactive scattering”. JOURNAL OF CHEMICAL PHYSICS 144.20 (2016): 204119.

77 References

Daten bereitgestellt von Europe PubMed Central.


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