Table 5
Real part of the permittivity ϵ′ suggested for the nucleus of 67P, assuming a mean temperature of about 110 K, as a function of the dust-to-ice volumetric ratio ([D/I] V) within the 0.1–1.5 range and a porosity (Φ) range of 80 to 50%.
| Nucleus | ||||
|
|
||||
| [D/I] V | 0.1 | 0.3 | 0.9 | 1.5 |
|
|
||||
| ϵ′ (Φ = 80%) | 1.24 | 1.28 | 1.33 | 1.36 |
| ϵ′ (Φ = 70%) | 1.53 | 1.58 | 1.65 | 1.69 |
| ϵ′ (Φ = 60%) | 1.83 | 1.90 | 1.98 | 2.02 |
| ϵ′ (Φ = 50%) | 2.13 | 2.20 | 2.29 | 2.34 |
Notes. The particle density of the current samples is taken into account (equal to about 2920 kg/m3). For a temperature variation equal to about 50%, ϵ′ would change by less than 20%.
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