The radiative association of P and O atoms
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Oxford Univ Press
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Acesso aberto
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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.
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atomic data, atomic processes, molecular data, circumstellar matter, ISM: molecules
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Inglês
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Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 457, n. 3, p. 3096-3100, 2016.
