Fig. 8
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Nano-diamond and a-C(:H) material drift velocities (for nH = 108 cm−3 and Tgas = 500 K) for nano-diamonds (cobalt), aliphatic-rich a-C:H grains with Eg = 2.67 eV (grey), and aromatic-rich a-C grains with Eg = 0.1 eV (black) 10 AU from HR 4049 (short-dashed), Elias 1 (long-dashed), and HD 97048 (solid). The data point colour coding is for the same sizes as in Fig. 1.
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