Artículos de revistas
The radiative association of P and O atoms
Fecha
2016-04-11Registro en:
Monthly Notices Of The Royal Astronomical Society. Oxford: Oxford Univ Press, v. 457, n. 3, p. 3096-3100, 2016.
0035-8711
10.1093/mnras/stw116
WOS:000373583900062
WOS000373583900062.pdf
Autor
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Institución
Resumen
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.