Quantum theory of four-atom reactions using arrangement channel hyperspherical coordinates: Formulation and application to OH+H-2<->H2O+H

An arrangement channel hyperspherical coordinate method for performing quantum scattering calculations on four-atom reactions is formulated. This method treats the vibrational and rotational states in different arrangement channels by a close-coupling expansion in nonorthogonal functions. The method...

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Bibliographic Details
Main Authors: Pogrebnya, S, Echave, J, Clary, D
Format: Journal article
Language:English
Published: 1997
Description
Summary:An arrangement channel hyperspherical coordinate method for performing quantum scattering calculations on four-atom reactions is formulated. This method treats the vibrational and rotational states in different arrangement channels by a close-coupling expansion in nonorthogonal functions. The method is applied to the calculation of state-to-state probabilities for the OH+H2→H2O+H reaction. Good agreement is found with cumulative and state-selected reaction probabilities previously calculated by other methods. The major advantage of this general approach is that the whole S matrix can be obtained in a single calculation. © 1997 American Institute of Physics.