The radiative association of P and O atoms
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Data
2016-04-11
Autores
Andreazza, C. M. [UNESP]
Almeida, A. A. de
Borin, A. C.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Oxford Univ Press
Resumo
The formation of PO from the radiative association of phosphorus and oxygen atoms has been estimated by accurate quantum chemistry calculations. The radiative association of P and O atoms along the B-2 Sigma(+) potential energy curve is the most efficient way of producing PO in the X-2 Pi ground state. For temperatures ranging between 300 and 14 000 K, the rate coefficients are found to vary from 1.61 x 10(-24) to 1.99 x 10(-18) cm(3)s(-1), respectively. These values indicate that only a very small amount of PO molecules can be formed by radiative association in dense and hot gas close to the photosphere of evolved oxygen-rich stars and other hostile environments.
Descrição
Palavras-chave
atomic data, atomic processes, molecular data, circumstellar matter, ISM: molecules
Como citar
Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 457, n. 3, p. 3096-3100, 2016.