Table 1. Cooling rate Rcool of molten droplet in container-less crystallization experiments using levitation methods. We read Rcool from each cooling curve obtained at each experiment just before the droplet crystallized. We calculate the heat flux qs and the initial temperature difference between the center and surface of the droplet δTc − s,0 by using Eqs. (5) and (4), respectively. Refs: [1] Tsukamoto et al. (2001), [2] Nagashima et al. (2006), [3] Nagashima et al. (2008).
From: A new constraint for chondrule formation: condition for the rim formation of barred-olivine textures
Sample composition | Radius rd[μ] | Cooling rate Rcool [K s−1] | Heat flux qs [erg cm−2 s−1] | Temp. diff. δTc− s,0 [K] | Levitation method | Ref. |
|---|---|---|---|---|---|---|
forsterite | ≈ 1000 | ≈350 | ≈6.7 × 108 | ≈ 170 | aero-acoustic | [1] |
forsterite | ≈ 1000 | ≈50 | ≈1.0 × 108 | ≈25 | gas-jet | [2] |
forsterite | ≈ 1000 | ≈70 | ≈1.3 × 108 | ≈10 | gas-jet | [3] |
Mg1.8SiO3.8 | ≈ 1000 | ≈30-40 | ≈(0.6−0.8)×108 | ≈5 | gas-jet | [3] |