Table 5: The forward rate coefficient is given by $\alpha (T/300)^{\beta }$. The reverse rate is given by $\alpha (T/300)^{\beta }{\rm e}^{-\gamma /T}$.
Reaction Rate $\alpha$ $\beta$ $\gamma$ Ref.
    cm3 s-1   K  
H3+ + HD $\leftrightarrow$ H2D+ +H2 k1, k-1 1.7 $\times $ 10-9 0 220 (1)
H2D+ + HD $\leftrightarrow$ D2H+ +H2 k2, k-2 8.1 $\times $ 10-10 0 187 Roberts et al. (2004)
D2H+ + HD $\leftrightarrow$ D3+ +H2 k3, k-3 6.4 $\times $ 10-10 0 234 Roberts et al. (2004)
H3+ + CO $\rightarrow$ HCO+ + H2 $k_{\rm CO}$ 1.7 $\times $ 10-9 0 0 RATE06
H2D+ + CO $\rightarrow$ HCO+ + HD $k_{\rm CO}$ 1.7 $\times $ 10-9 0 0 RATE06
$\rightarrow$ DCO+ + H2          
D2H+ + CO $\rightarrow$ HCO+ + D2 $k_{\rm CO}$ 1.7 $\times $ 10-9 0 0 RATE06
$\rightarrow$ DCO+ + HD          
D3+ + CO $\rightarrow$ DCO+ + D2 $k_{\rm CO}$ 1.7 $\times $ 10-9 0 0 RATE06
H3+ + e- $\rightarrow$ $\rm products$ $k_{\rm rec0}$ 6.7 $\times $ 10-8 -0.52 0 RATE06
H2D+ + e- $\rightarrow$ $\rm products$ $k_{\rm rec1}$ 6.0 $\times $ 10-8 -0.5 0 Sundström et al. (1994)
D2H+ + e- $\rightarrow$ $\rm products$ $k_{\rm rec2}$ 6.0 $\times $ 10-8 -0.5 0 Roberts et al. (2004)
D3+ + e- $\rightarrow$ $\rm products$ $k_{\rm rec3}$ 2.7 $\times $ 10-8 -0.5 0 Larsson et al. (1997)
(1) At the low temperatures found in our starless and protostellar cores,
this rate corresponds to the Langevin limit.

Source LaTeX | All tables | In the text