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Effective potential theory of atom–diatom scattering in the presence of “intermediate” reactive channels
Author(s) -
Varracchio E. Ficocelli
Publication year - 1981
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560190417
Subject(s) - formalism (music) , scattering , diagrammatic reasoning , physics , atom (system on chip) , inelastic scattering , classical mechanics , quantum mechanics , computer science , musical , embedded system , visual arts , programming language , art
A field‐theoretical formalism is applied to the problem of atom–diatom scattering, in the presence of “intermediate” reactive channels. This leads to an integral equation formulation for elastic processes and to a numerical quadrature problem for inelastic vibro–rotational transitions. The key quantity of the theory is represented by an effective potential that contains full information on the dynamics of the process. A closed equation is obtained for this quantity, along with an approximation scheme of the second order in the system interaction potential. A diagrammatic technique is introduced and the physical interpretation of the approximate form of the effective potential considered.