Table 2: Rate coefficients ( $k_{d{\rm r}} = \alpha (T/300)^{\beta }$) for the dissociative recombination of H3+ and deuterated analogues.
Reaction     $\alpha$ $\beta$ Ref.
      (cm3 s-1)    
H3+ + e- $\longrightarrow$  H2 +  H 1.36(-8) -0.5 1
  $\longrightarrow$  H +  H +  H 5.44(-8) -0.5 1
H2D+ + e- $\longrightarrow$  HD +  H 1.20(-8) -0.5 2
  $\longrightarrow$  H2 +  D 4.20(-9) -0.5 2
  $\longrightarrow$  D +  H +  H 4.38(-8) -0.5 2
HD2+ + e- $\longrightarrow$  HD +  D 4.20(-9) -0.5  
  $\longrightarrow$  D2 +  H 1.20(-8) -0.5  
  $\longrightarrow$  D +  D +  H 4.38(-8) -0.5  
D3+ + e- $\longrightarrow$  D2 +  D 5.40(-9) -0.5 3
  $\longrightarrow$  D +  D +  D 2.16(-8) -0.5 3
Note: a(-b) stands for $a\times10^{-b}$.
Refs.: 1. McCall et al. (2003); 2. Sundström et al. (1994); 3. Larsson et al. (1997).

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