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Home All issues Volume 498 / No 3 (May II 2009) A&A, 498 3 (2009) 771-783 Full HTML
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Table 4:

Key chemical reaction rates $^{\dagger }$ adopted in this work.

Reaction		 Rate [cm3 s-1]

\ensuremath{{\rm HCO^+ + {\rm e}^- \rightarrow CO + H}}		 $2.4 \times 10^{-7} (300~\ensuremath{{\rm K}} /\ensuremath{{\rm T}} )^{0.69}~^{a}$
\ensuremath{{\rm HCO^+ + PAH^- \rightarrow PAH + CO + H}} $1.4 \times 10^{-8} (300~\ensuremath{{\rm K}} /\ensuremath{{\rm T}} )^{0.50}~^{b}$
\ensuremath{{\rm M^+ + {\rm e}^- \rightarrow M + h\nu}} $3.7 \times 10^{-12} (300~\ensuremath{{\rm K}} /\ensuremath{{\rm T}} )^{0.65}$
\ensuremath{{\rm M^+ + PAH^- \rightarrow M + PAH}} $1.0 \times 10^{-8} (300~\ensuremath{{\rm K}} /\ensuremath{{\rm T}} )^{0.50}~^{b}$
\ensuremath{{\rm C^+ + H_2O \rightarrow HCO^+ + H}} $8.9 \times 10^{-10} (300~\ensuremath{{\rm K}} /\ensuremath{{\rm T}} )^{0.50}$
\ensuremath{{\rm C^+ + H_2O \rightarrow HOC^+ + H}} $1.8 \times 10^{-9} (300~\ensuremath{{\rm K}} /\ensuremath{{\rm T}} )^{0.50}$
\ensuremath{{\rm CO^+ + H_2 \rightarrow HCO^+ + H}} $7.5 \times 10^{-10}$
\ensuremath{{\rm CO^+ + H_2 \rightarrow HOC^+ + H}} $7.5 \times 10^{-10}$
\ensuremath{{\rm HOC^+ + H_2 \rightarrow HCO^+ + H_2}} $3.8 \times 10^{-10}~^{c}$
$^{\dagger }$ Rates are from the UDFA and OSU databases unless indicated; a cited in the text as $\alpha$(HCO+), it also applies to DCO+ and H13CO+; b rate is from (Flower & Pineau des Forêts 2003); c rate is from (Smith et al. 2002).

Source LaTeX | All tables | In the text

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