Table 3
Sublimation characteristics of the dust species considered in this study.
| Dust species | μ | α |
|
ℬ | Temp. rangee | Refs. | Notes | |||||
| [K] | [K] | |||||||||||
|
|
||||||||||||
| Iron (Fe) | 55. 845 | 1. 0 | 48 354 ± 1151 | 29.2 ± 0.7 | 1573–1973 | F04 | ||||||
| Silicon monoxide (SiO) | 44. 085 | 0. 04 | 49 520 ± 1400 | 32.5 ± 1.0 | 1275–1525 | G13 | ||||||
| Cryst. fayalite (Fe2SiO4) | 203. 774 | 0. 1a | 60 377 ± 1082 | 37.7 ± 0.7 | 1373–1433 | N94 | ||||||
| Cryst. enstatite (MgSiO3) | 100. 389 | 0. 1a | 68 908 ± 8773 | 38.1 ± 5.0 | 1573–1923 | M88, K91 | ||||||
| Cryst. forsterite (Mg2SiO4) | 140. 694 | 0. 1b | 65 308 ± 3969 | 34.1 ± 2.5 | 1673–2133 | N94 | ||||||
| Quartz (SiO2) | 60. 084 | 1. 0 | 69 444 ± 3447 | 33.1 ± 1.8 | 1833–1958 | H90 | (f) | |||||
| Corundum (Al2O3) | 101. 961 | 0. 1c | 77 365 ± 3868d | 39.3 ± 2.0d | L08 | |||||||
| Silicon carbide (SiC) | 40. 10 | 0. 1a | 78 462 ± 3923d | 37.8 ± 1.9d | 1500–2000 | L93 | (g) | |||||
| Graphite (C) | 12. 011 | 0. 1a | 93 646 ± 503 | 36.7 ± 1.8d | 2400–3000 | Z73 | (h) | |||||
Notes.
For materials for which no measuments of the evaporation coefficient are available we arbitrarily adopt α = 0.1.
From Gail (2010).
From Schaefer & Fegley (2004).
Where no uncertainty on sublimation parameters was reported, we arbitrarily set the standard deviation to 5%.
These sublimation parameters were measured using a different polymorph of SiO2, namely high cristobalite. Furthermore, they assume the sublimation proceeds following the reaction SiO2(solid) → SiO2(gas), for which the evaporation coefficient α is close to unity (Hashimoto 1990).
At the temperatures relevant to this study, graphite sublimates mostly as C3-clusters, and the quoted parameters correspond to this component (Zavitsanos & Carlson 1973).
Reference. F04 Ferguson et al. (2004); G13 Gail et al. (2013); H90 Hashimoto (1990); K91 Kushiro & Mysen (1991); L93 Lilov (1993); L08 Lihrmann (2008); M88 Mysen & Kushiro (1988); N94 Nagahara et al. (1994); Z73 Zavitsanos & Carlson (1973).
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