Table 1.
Fractions of N2 desorbing in the various integration regimes for the different ices.
| Abundance in the ice | Molecular concentration | N2 fraction desorbing | ||||||
|---|---|---|---|---|---|---|---|---|
| [with respect to water] | [%] | |||||||
| H2O | CO2 | N2 | H2O | CO2 | N2 | Pure N2 desorption | Co-Desorption CO2 | Combined H2O release |
| N2(N2 peak) | N2(CO2) | N2(H2O) | ||||||
| 30–60 K | 60–115 K | 115–200 K | ||||||
| 100 | 0.1 | 13.2 | 88.3 | 0.1 | 11.6 | 0.418 ± 0.021 | 0.059 ± 0.012 | 0.523 ± 0.033 |
| 100 | 0.1 | 5.1 | 95.1 | 0.1 | 4.9 | 0.339 ± 0.034 | 0.082 ± 0.016 | 0.579 ± 0.050 |
| 100 | 2.9 | 0.7 | 96.5 | 2.8 | 0.7 | 0.199 ± 0.040 | 0.100 ± 0.020 | 0.697 ± 0.060 |
| 100 | 3.2 | 3.9 | 93.4 | 3.0 | 3.6 | 0.302 ± 0.030 | 0.082 ± 0.016 | 0.617 ± 0.046 |
| 100 | 6.2 | 3.9 | 90.8 | 5.6 | 3.5 | 0.326 ± 0.033 | 0.076 ± 0.008 | 0.598 ± 0.040 |
| 100 | 7.9 | 4.7 | 88.8 | 7.0 | 4.1 | 0.320 ± 0.032 | 0.091 ± 0.009 | 0.589 ± 0.041 |
| 100 | 8.4 | 4.6 | 88.5 | 7.5 | 4.1 | 0.299 ± 0.060 | 0.094 ± 0.009 | 0.607 ± 0.069 |
| 100 | 9.5 | 0.5 | 91.0 | 8.6 | 0.4 | 0.156 ± 0.031 | 0.120 ± 0.012 | 0.723 ± 0.043 |
| 100 | 11.4 | 10.9 | 81.8 | 9.4 | 8.9 | 0.490 ± 0.025 | 0.097 ± 0.010 | 0.413 ± 0.034 |
| 100 | 11.9 | 0.8 | 88.7 | 10.6 | 0.7 | 0.206 ± 0.041 | 0.111 ± 0.006 | 0.683 ± 0.047 |
| 100 | 13.5 | 1.2 | 87.2 | 11.7 | 1.1 | 0.200 ± 0.040 | 0.135 ± 0.007 | 0.663 ± 0.047 |
| 100 | 18.0 | 5.6 | 81.0 | 14.5 | 4.5 | 0.388 ± 0.039 | 0.147 ± 0.007 | 0.463 ± 0.046 |
| 100 | 18.5 | 6.0 | 80.4 | 14.8 | 4.8 | 0.370 ± 0.037 | 0.154 ± 0.008 | 0.474 ± 0.045 |
| 100 | 20.5 | 7.0 | 78.4 | 16.1 | 5.5 | 0.425 ± 0.021 | 0.159 ± 0.008 | 0.416 ± 0.029 |
| 100 | 23.1 | 11.1 | 74.5 | 17.2 | 8.3 | 0.474 ± 0.024 | 0.165 ± 0.008 | 0.360 ± 0.032 |
| 100 | 24.2 | 5.3 | 77.2 | 18.7 | 4.1 | 0.357 ± 0.036 | 0.173 ± 0.009 | 0.470 ± 0.044 |
| 100 | 24.8 | 6.0 | 76.4 | 19.0 | 4.6 | 0.363 ± 0.036 | 0.181 ± 0.009 | 0.456 ± 0.045 |
| 100 | 34.2 | 1.1 | 73.9 | 25.3 | 0.8 | 0.228 ± 0.046 | 0.216 ± 0.011 | 0.556 ± 0.056 |
Notes. The desorption regimes are referenced from Table 2 and the temperature limits of the integration have been added for convenience. In the text, the different regimes are referred to by the names given in this table. Please note that small deviations in the desorbing fraction from a total of 1 originate from rounding effects, as well as a small contribution of N2 in the regions of the integration limits, which were not taken into account. However, this contribution is always less than < 0.3% over the whole integration and therefore negligible compared to the error. The data have been sorted with respect to the amount of CO2 present in the ice. Measurements that use a H2O:N2 ratio of ∼10:1 are highlighted in bold, including their N2(H2O) fraction, and are discussed in Sect. 4.1.
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