Table A1.
Open in new tab

Reactions and reaction rates used in this study.

ReactionRate (⁠|$\rm {cm^3\, s^{-1}}$|⁠)
|$\rm {H_3^+ + e^- \rightarrow H_2 + H}$||$k_{1a}=2.34 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {H_3^+ + e^- \rightarrow H+H+H}$||$k_{1b}=4.36 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {HCO^+ + e^- \rightarrow CO + H}$||$k_2=2.4 \times 10^{-7} (\frac{T}{300})^{-0.7}$|
|$\rm {Mg^+ + e^- \rightarrow Mg}$|  + hν|$k_3=2.78 \times 10^{-12} (\frac{T}{300})^{-0.7}$|
|$\rm {He^+ + e^- \rightarrow He}$|  + hν|$k_4=5.36 \times 10^{-12} (\frac{T}{300})^{-0.5}$|
|$\rm {C^+ + e^- \rightarrow C}$|  + hν|$k_5=2.36 \times 10^{-12} (\frac{T}{300})^{-0.3} \rm {exp}(\frac{-17.6}{T})$|
|$\rm {H^+ + e^- \rightarrow H}$|  + hν|$k_6=3.50 \times 10^{-12} (\frac{T}{300})^{-0.8}$|
|$\rm {H_3^+ + O \rightarrow H_2O^+ + H}$||$k_{12a}=3.42 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + O \rightarrow OH^+ + H_2}$||$k_{12b}=7.98 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + CO \rightarrow HCO^+ + H_2}$||$k_{12c}=1.36 \times 10^{-9} (\frac{T}{300})^{-0.1} \rm {exp}(\frac{3.40}{T}) \rm {xCO}$|
|$\rm {H_3^+ + CO \rightarrow HOC^+ + H_2}$||$k_{12d}=8.49 \times 10^{-10} (\frac{T}{300})^{0.1} \rm {exp}(\frac{-5.20}{T}) \rm {xCO}$|
|$\rm {H_3^+ + O_2 \rightarrow O_2H^+ + H_2}$||$k_{12e}=9.30 \times 10^{-10} \rm {exp}(\frac{-100.00}{T}) \rm {xO_2}$|
|$\rm {H_3^+ + Mg \rightarrow Mg^+ + H + H_2}$||$k_{13}=1.0 \times 10^{-9} \rm {xM}$|
|$\rm {HCO^+ + Mg \rightarrow Mg^+ + HCO}$||$k_{23}=2.9 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + O_2 \rightarrow O^+ + O + He}$||$k_{42}=1.1 \times 10^{-9} \rm {xO_2}$|
|$\rm {He^+ + CO \rightarrow C^+ + O + He}$||$k_{45}=1.6 \times 10^{-9} \rm {xCO}$|
|$\rm {He^+ + H_2 \rightarrow H^+ + H + He}$||$k_{46}=3.7 \times 10^{-14} \rm {exp}(\frac{-35.0}{T}) \rm {xH_2}$|
|$\rm {C^+ + H_2 \rightarrow CH_2^+}$|  + hν|$k_{52a}=4.0 \times 10^{-16} \left(\frac{T}{300} \right)^{-0.2} \rm {xH_2}$|
|$\rm {C^+ + O_2 \rightarrow CO^+ + O}$||$k_{52b}=3.42 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + O_2 \rightarrow CO + O^+}$||$k_{52c}=4.54 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + Mg \rightarrow Mg^+ + C}$||$k_{53}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {H^+ + O \rightarrow O^+ + H}$||$k_{62a}=6.86 \times 10^{-10} (\frac{T}{300})^{0.3} \rm {exp} (\frac{-224.30}{T}) \rm {xO}$|
|$\rm {H^+ + O_2 \rightarrow O_2^+ + H}$||$k_{62b}=2.00 \times 10^{-9} \rm {xO_2}$|
|$\rm {H^+ + Mg \rightarrow Mg^+ + H}$||$k_{63}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + H_2 \rightarrow H_2^+ + He}$||$k_{41}=7.2 \times 10^{-15} \rm {xH_2}$|
ReactionRate (⁠|$\rm {cm^3\, s^{-1}}$|⁠)
|$\rm {H_3^+ + e^- \rightarrow H_2 + H}$||$k_{1a}=2.34 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {H_3^+ + e^- \rightarrow H+H+H}$||$k_{1b}=4.36 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {HCO^+ + e^- \rightarrow CO + H}$||$k_2=2.4 \times 10^{-7} (\frac{T}{300})^{-0.7}$|
|$\rm {Mg^+ + e^- \rightarrow Mg}$|  + hν|$k_3=2.78 \times 10^{-12} (\frac{T}{300})^{-0.7}$|
|$\rm {He^+ + e^- \rightarrow He}$|  + hν|$k_4=5.36 \times 10^{-12} (\frac{T}{300})^{-0.5}$|
|$\rm {C^+ + e^- \rightarrow C}$|  + hν|$k_5=2.36 \times 10^{-12} (\frac{T}{300})^{-0.3} \rm {exp}(\frac{-17.6}{T})$|
|$\rm {H^+ + e^- \rightarrow H}$|  + hν|$k_6=3.50 \times 10^{-12} (\frac{T}{300})^{-0.8}$|
|$\rm {H_3^+ + O \rightarrow H_2O^+ + H}$||$k_{12a}=3.42 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + O \rightarrow OH^+ + H_2}$||$k_{12b}=7.98 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + CO \rightarrow HCO^+ + H_2}$||$k_{12c}=1.36 \times 10^{-9} (\frac{T}{300})^{-0.1} \rm {exp}(\frac{3.40}{T}) \rm {xCO}$|
|$\rm {H_3^+ + CO \rightarrow HOC^+ + H_2}$||$k_{12d}=8.49 \times 10^{-10} (\frac{T}{300})^{0.1} \rm {exp}(\frac{-5.20}{T}) \rm {xCO}$|
|$\rm {H_3^+ + O_2 \rightarrow O_2H^+ + H_2}$||$k_{12e}=9.30 \times 10^{-10} \rm {exp}(\frac{-100.00}{T}) \rm {xO_2}$|
|$\rm {H_3^+ + Mg \rightarrow Mg^+ + H + H_2}$||$k_{13}=1.0 \times 10^{-9} \rm {xM}$|
|$\rm {HCO^+ + Mg \rightarrow Mg^+ + HCO}$||$k_{23}=2.9 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + O_2 \rightarrow O^+ + O + He}$||$k_{42}=1.1 \times 10^{-9} \rm {xO_2}$|
|$\rm {He^+ + CO \rightarrow C^+ + O + He}$||$k_{45}=1.6 \times 10^{-9} \rm {xCO}$|
|$\rm {He^+ + H_2 \rightarrow H^+ + H + He}$||$k_{46}=3.7 \times 10^{-14} \rm {exp}(\frac{-35.0}{T}) \rm {xH_2}$|
|$\rm {C^+ + H_2 \rightarrow CH_2^+}$|  + hν|$k_{52a}=4.0 \times 10^{-16} \left(\frac{T}{300} \right)^{-0.2} \rm {xH_2}$|
|$\rm {C^+ + O_2 \rightarrow CO^+ + O}$||$k_{52b}=3.42 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + O_2 \rightarrow CO + O^+}$||$k_{52c}=4.54 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + Mg \rightarrow Mg^+ + C}$||$k_{53}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {H^+ + O \rightarrow O^+ + H}$||$k_{62a}=6.86 \times 10^{-10} (\frac{T}{300})^{0.3} \rm {exp} (\frac{-224.30}{T}) \rm {xO}$|
|$\rm {H^+ + O_2 \rightarrow O_2^+ + H}$||$k_{62b}=2.00 \times 10^{-9} \rm {xO_2}$|
|$\rm {H^+ + Mg \rightarrow Mg^+ + H}$||$k_{63}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + H_2 \rightarrow H_2^+ + He}$||$k_{41}=7.2 \times 10^{-15} \rm {xH_2}$|
Table A1.
Open in new tab

Reactions and reaction rates used in this study.

ReactionRate (⁠|$\rm {cm^3\, s^{-1}}$|⁠)
|$\rm {H_3^+ + e^- \rightarrow H_2 + H}$||$k_{1a}=2.34 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {H_3^+ + e^- \rightarrow H+H+H}$||$k_{1b}=4.36 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {HCO^+ + e^- \rightarrow CO + H}$||$k_2=2.4 \times 10^{-7} (\frac{T}{300})^{-0.7}$|
|$\rm {Mg^+ + e^- \rightarrow Mg}$|  + hν|$k_3=2.78 \times 10^{-12} (\frac{T}{300})^{-0.7}$|
|$\rm {He^+ + e^- \rightarrow He}$|  + hν|$k_4=5.36 \times 10^{-12} (\frac{T}{300})^{-0.5}$|
|$\rm {C^+ + e^- \rightarrow C}$|  + hν|$k_5=2.36 \times 10^{-12} (\frac{T}{300})^{-0.3} \rm {exp}(\frac{-17.6}{T})$|
|$\rm {H^+ + e^- \rightarrow H}$|  + hν|$k_6=3.50 \times 10^{-12} (\frac{T}{300})^{-0.8}$|
|$\rm {H_3^+ + O \rightarrow H_2O^+ + H}$||$k_{12a}=3.42 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + O \rightarrow OH^+ + H_2}$||$k_{12b}=7.98 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + CO \rightarrow HCO^+ + H_2}$||$k_{12c}=1.36 \times 10^{-9} (\frac{T}{300})^{-0.1} \rm {exp}(\frac{3.40}{T}) \rm {xCO}$|
|$\rm {H_3^+ + CO \rightarrow HOC^+ + H_2}$||$k_{12d}=8.49 \times 10^{-10} (\frac{T}{300})^{0.1} \rm {exp}(\frac{-5.20}{T}) \rm {xCO}$|
|$\rm {H_3^+ + O_2 \rightarrow O_2H^+ + H_2}$||$k_{12e}=9.30 \times 10^{-10} \rm {exp}(\frac{-100.00}{T}) \rm {xO_2}$|
|$\rm {H_3^+ + Mg \rightarrow Mg^+ + H + H_2}$||$k_{13}=1.0 \times 10^{-9} \rm {xM}$|
|$\rm {HCO^+ + Mg \rightarrow Mg^+ + HCO}$||$k_{23}=2.9 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + O_2 \rightarrow O^+ + O + He}$||$k_{42}=1.1 \times 10^{-9} \rm {xO_2}$|
|$\rm {He^+ + CO \rightarrow C^+ + O + He}$||$k_{45}=1.6 \times 10^{-9} \rm {xCO}$|
|$\rm {He^+ + H_2 \rightarrow H^+ + H + He}$||$k_{46}=3.7 \times 10^{-14} \rm {exp}(\frac{-35.0}{T}) \rm {xH_2}$|
|$\rm {C^+ + H_2 \rightarrow CH_2^+}$|  + hν|$k_{52a}=4.0 \times 10^{-16} \left(\frac{T}{300} \right)^{-0.2} \rm {xH_2}$|
|$\rm {C^+ + O_2 \rightarrow CO^+ + O}$||$k_{52b}=3.42 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + O_2 \rightarrow CO + O^+}$||$k_{52c}=4.54 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + Mg \rightarrow Mg^+ + C}$||$k_{53}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {H^+ + O \rightarrow O^+ + H}$||$k_{62a}=6.86 \times 10^{-10} (\frac{T}{300})^{0.3} \rm {exp} (\frac{-224.30}{T}) \rm {xO}$|
|$\rm {H^+ + O_2 \rightarrow O_2^+ + H}$||$k_{62b}=2.00 \times 10^{-9} \rm {xO_2}$|
|$\rm {H^+ + Mg \rightarrow Mg^+ + H}$||$k_{63}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + H_2 \rightarrow H_2^+ + He}$||$k_{41}=7.2 \times 10^{-15} \rm {xH_2}$|
ReactionRate (⁠|$\rm {cm^3\, s^{-1}}$|⁠)
|$\rm {H_3^+ + e^- \rightarrow H_2 + H}$||$k_{1a}=2.34 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {H_3^+ + e^- \rightarrow H+H+H}$||$k_{1b}=4.36 \times 10^{-8} (\frac{T}{300})^{-0.5}$|
|$\rm {HCO^+ + e^- \rightarrow CO + H}$||$k_2=2.4 \times 10^{-7} (\frac{T}{300})^{-0.7}$|
|$\rm {Mg^+ + e^- \rightarrow Mg}$|  + hν|$k_3=2.78 \times 10^{-12} (\frac{T}{300})^{-0.7}$|
|$\rm {He^+ + e^- \rightarrow He}$|  + hν|$k_4=5.36 \times 10^{-12} (\frac{T}{300})^{-0.5}$|
|$\rm {C^+ + e^- \rightarrow C}$|  + hν|$k_5=2.36 \times 10^{-12} (\frac{T}{300})^{-0.3} \rm {exp}(\frac{-17.6}{T})$|
|$\rm {H^+ + e^- \rightarrow H}$|  + hν|$k_6=3.50 \times 10^{-12} (\frac{T}{300})^{-0.8}$|
|$\rm {H_3^+ + O \rightarrow H_2O^+ + H}$||$k_{12a}=3.42 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + O \rightarrow OH^+ + H_2}$||$k_{12b}=7.98 \times 10^{-10} (\frac{T}{300})^{-0.2} \rm {xO}$|
|$\rm {H_3^+ + CO \rightarrow HCO^+ + H_2}$||$k_{12c}=1.36 \times 10^{-9} (\frac{T}{300})^{-0.1} \rm {exp}(\frac{3.40}{T}) \rm {xCO}$|
|$\rm {H_3^+ + CO \rightarrow HOC^+ + H_2}$||$k_{12d}=8.49 \times 10^{-10} (\frac{T}{300})^{0.1} \rm {exp}(\frac{-5.20}{T}) \rm {xCO}$|
|$\rm {H_3^+ + O_2 \rightarrow O_2H^+ + H_2}$||$k_{12e}=9.30 \times 10^{-10} \rm {exp}(\frac{-100.00}{T}) \rm {xO_2}$|
|$\rm {H_3^+ + Mg \rightarrow Mg^+ + H + H_2}$||$k_{13}=1.0 \times 10^{-9} \rm {xM}$|
|$\rm {HCO^+ + Mg \rightarrow Mg^+ + HCO}$||$k_{23}=2.9 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + O_2 \rightarrow O^+ + O + He}$||$k_{42}=1.1 \times 10^{-9} \rm {xO_2}$|
|$\rm {He^+ + CO \rightarrow C^+ + O + He}$||$k_{45}=1.6 \times 10^{-9} \rm {xCO}$|
|$\rm {He^+ + H_2 \rightarrow H^+ + H + He}$||$k_{46}=3.7 \times 10^{-14} \rm {exp}(\frac{-35.0}{T}) \rm {xH_2}$|
|$\rm {C^+ + H_2 \rightarrow CH_2^+}$|  + hν|$k_{52a}=4.0 \times 10^{-16} \left(\frac{T}{300} \right)^{-0.2} \rm {xH_2}$|
|$\rm {C^+ + O_2 \rightarrow CO^+ + O}$||$k_{52b}=3.42 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + O_2 \rightarrow CO + O^+}$||$k_{52c}=4.54 \times 10^{-10} \rm {xO_2}$|
|$\rm {C^+ + Mg \rightarrow Mg^+ + C}$||$k_{53}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {H^+ + O \rightarrow O^+ + H}$||$k_{62a}=6.86 \times 10^{-10} (\frac{T}{300})^{0.3} \rm {exp} (\frac{-224.30}{T}) \rm {xO}$|
|$\rm {H^+ + O_2 \rightarrow O_2^+ + H}$||$k_{62b}=2.00 \times 10^{-9} \rm {xO_2}$|
|$\rm {H^+ + Mg \rightarrow Mg^+ + H}$||$k_{63}=1.1 \times 10^{-9} \rm {xM}$|
|$\rm {He^+ + H_2 \rightarrow H_2^+ + He}$||$k_{41}=7.2 \times 10^{-15} \rm {xH_2}$|
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