grain density
my home upper InterStellar Chem grain density Abundance Table Dissociate energy Polarizability Proton affinity Charge trans rate Ionize potential rate coeff

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Relative space density of dust grains (from Table 5.2 of Duley & Williams, 1984inch.book.....D)

V is the grain volumn. ng is in cm^-3, ng/n the abundance relative to H atoms.

Solid Density(g/cm3) Molecular_weight ng ng/n
Mg2SiO4 3.21 140.7 1.4x10^22 1.2x10^-27/V
Fe2SiO4 4.34 203.8 1.3x10^22 9.6x10^-28/V
MgO 3.58 40.3 5.6x10^22 6.3x10^-28/V
SiO 2.13 44.1 3.0x10^22 1.2x10^-27/V
Fe3O4 5.18 231.51 1.4x10^22 0.6x10^-27/V
C 2.25 12 1.2x10^23 3.3x10^-27/V

 

 

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