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Table 5

Coagulation timescales in years for cuts 1, 2, and 4.

τ1 (yr) τ2 (yr) τ4 (yr)

PAH on LamC 70 60 580
PAH on aSil 80 60 660
SamC on LamC 8.5 × 103 7.1 × 103 7.3 × 104
SamC on aSil 9.6 × 103 8.0 × 103 8.3 × 104
LamC on LamC 4.4 × 105 3.7 × 105 3.8 × 106
LamC on aSil 4.9 × 105 4.1 × 105 4.3 × 106
aSil on LamC 4.0 × 104 3.4 × 104 3.5 × 105
aSil on aSil 4.5 × 104 3.7 × 104 3.9 × 105

Notes. These are the coagulation timescales for the sticking of only two grains with a relative speed equal to the turbulent speed, Δv = 68 m/s.

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