Dilip K Bhattacharyya
Articles written in Journal of Chemical Sciences
Volume 99 Issue 1-2 August 1987 pp 39-46
Radiative interactions which give rise to allowed and forbidden radiative transitions in diatomic molecules are presented as tensor operators. A translational expansion of these interaction operators from the centre of mass of the molecule to the atomic centres is discussed. It is found that the expansion of the magnetic dipole interaction operator generates an extra gradient operator which may contribute significantly towards the transition probability. The expansion of atomic orbitals from one centre to the other is also discussed and analytical expressions of the two-centre integrals which one may encounter in radiative processes are presented.
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