Incorporation of stochastic chemistry on dust grains in the Meudon PDR code using moment equations - I. Application to the formation of H2 and HD

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Table 1:

Parameters for the interaction of hydrogen and deuterium atoms with dust grains of different compositions and surface morphologies.
	Amorphous carbon	Olivine	Amorphous silicate	Low density ice
Parameter	Katz (1999)	Katz (1999)	Perets (2007)	Perets (2005)
$\rho$ (g cm^-3)	2.16	3^a	3.5	0.94
s (cm^-2)	5(13)	2(14)	7(14)	5(13)^a
d ( $\AA$ )	14.14	7.07	3.78	14.14^a
$E_{\rm H}^{\rm des}$ (meV)	56.7	32.1	44.0	52.3
$E_{\rm D}^{\rm des}$ (meV)	61.7	37.1	49.0	57.3
$E^{\rm diff}_{\rm I}$ (meV)	44.0	24.7	35.0	44.5
$\nu_{\rm I}$	10¹²	10¹²	10¹²	10¹²

^a Assumed sensible values, as they are not given in the cited papers.

Source LaTeX | All tables | In the text

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