Excitation of OIII by charge transfer of OIV with HI

Abstract

Calculations re presented of reaction rates for the charge transfer reaction between OIV ions and atomic hydrogen that populate the ¹P,²D,³P, 3ˢ states of the (2pep) configuration and the ¹P⁰,³P⁰ states of the (2p3s) configuration of OIII. The temperatures considered range between 1000 and 50000 K. By approximating the system by a quasi-molecule, the theoretical study of the collision was made with the method of Grice and Herschbach (1974, Mol. Phys. 27, 159) where the orbitals were generated by the model potential method. Our results are consistent with the astrophysical observations of the 5592 Å emission line of OIII in planetary nebulae and are also compared with the computed avlues of Dalgarno, Heil and Butler (1981, Astrophys. J. 245, 793) obtained with the usual techniques of quantum chemistry.Asociación Argentina de Astronomí

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