PO

Phosphorus monoxide, Phosphorus oxide
Flags: RATE12
Empirical: OP
Mass: 47 amu
Dipole moment: 1.880 D
Heat of formation: -32.0 kJ mol^-1
Added to system: 2003-05-06 06:43:21

Reactions: Formation | Destruction

8 PO formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	HPO + CRPHOT → PO + H	1.30e-17	0.00	750.00	10 - 41000
2	HPO⁺ + e^- → PO + H	1.50e-7	-0.50	0.00	10 - 300
3	H₂O + HPO⁺ → PO + H₃O⁺	3.40e-10	-0.50	0.00	10 - 41000
4	O + HPO → PO + OH	3.80e-11	0.00	0.00	10 - 300
5	O + PH₂ → PO + H₂	4.00e-11	0.00	0.00	10 - 300
6	O + PH → PO + H	1.00e-10	0.00	0.00	10 - 300
7	P + O₂ → PO + O	1.00e-13	0.00	0.00	300 - 2500
8	HPO + PHOTON → PO + H	1.70e-10	0.00	5.30	10 - 41000

	Reaction	α	β	γ	T_l - T_u (K)
1	C⁺ + PO → PO⁺ + C	1.00e-9	-0.50	0.00	10 - 300
2	H⁺ + PO → PO⁺ + H	1.00e-9	-0.50	0.00	10 - 300
3	PO + CRPHOT → P + O	1.30e-17	0.00	250.00	10 - 41000
4	H₃⁺ + PO → HPO⁺ + H₂	1.00e-9	-0.50	0.00	10 - 41000
5	HCO⁺ + PO → HPO⁺ + CO	1.00e-9	-0.50	0.00	10 - 41000
6	He⁺ + PO → P⁺ + O + He	1.00e-9	-0.50	0.00	10 - 41000
7	N + PO → P + NO	2.55e-12	0.00	0.00	10 - 300
8	N + PO → PN + O	3.00e-11	-0.60	0.00	10 - 300
9	PO + PHOTON → P + O	3.00e-10	0.00	2.00	10 - 41000

Variation of log fractional abundance (relative to H₂) with log time (years) in a dark cloud model. Ref. RATE12 paper.