Species | Tr (K) | νin (s−1) |
---|---|---|
\(\mathrm {H}^+,\mathrm {H}\) | > 50 | \(2.65 \times 10^{-10}n(\mathrm {H})\mathrm {T}_r^{1/2}(1-0.083\log _{10}\mathrm {T}_r)^2\) |
\(\mathrm {He}^+,\mathrm {He}\) | > 50 | \(8.73 \times 10^{-11}n(\mathrm {He})\mathrm {T}_r^{1/2}(1-0.093\log _{10}\mathrm {T}_r)^2\) |
\(\mathrm {H}^+,\mathrm {O}\) | > 300 | \(6.61 \times 10^{-11}n(\mathrm {O})\mathrm {T}_i^{1/2}(1-0.047\log _{10}\mathrm {T}_i)^2\) |
\(\mathrm {O}^+, \mathrm {H}\) | > 300 | \(4.63 \times 10^{-12} n(\mathrm {H})(\mathrm {T}_n+\mathrm {T}_i/16)^{1/2}\) |
\(\mathrm {O}^+, \mathrm {O}\) | – | \(\mathrm {max}[3.68 \times 10^{-11} n(\mathrm {O}) \mathrm {T}_r^{1/2}(1-0.065\log _{10}\mathrm {T}_r)^2,\; 4.01\times 10^{-10}n(\mathrm {O})]\) |
\(\mathrm {O}_2^+, \mathrm {O}_2\) | – | \(\mathrm {max}[2.62 \times 10^{-11} n(\mathrm {O}_2) \mathrm {T}_r^{1/2} (1-0.074\log _{10}\mathrm {T}_r) ^2, \;4.08\times 10^{-10}n(\mathrm {O}_2)]\) |