Articles written in Journal of Chemical Sciences

    • H+ + O2 system revisited: four-state quasidiabatic potential energy surfaces and coupling potentials


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      The global adiabatic and quasidiabatic potential energy surfaces for the ground and first three excited (1−43 A" ) electronic states of H++ O2 system are reported on a finer grid points in the Jacobi coordinates using Dunning’s cc-pVTZ basis set and internally contracted multi-reference (single and double) configuration interaction method. Ab initio procedures have been used to compute the corresponding quasidiabatic surfaces and radial coupling potentials which are relevant for the dynamical studies of inelastic vibrational excitation andcharge transfer processes. Nonadiabatic couplings arising out of relative motion of proton and the vibrational motions of O2 between the adiabatic electronic states have also been analyzed.

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