Table 4
Average astrophysical photodesorption yield in molecule/photon extrapolated from our experimental results using the method described in Sect. 2 for different molecules at 15 K.
| Ice | Desorbed molecule | X-ray astrophysical desorption yield |
|---|---|---|
| Pure methanol | H2O | 2.3 ± 1.2 × 10−4 |
| CO | 3.9 ± 2.0 × 10−3 | |
| CO2 | 7.4 ± 3.7 × 10−4 | |
| H2CO | 3.6 ± 1.8 × 10−5 | |
| CH3OH | 2.4 ± 1.2 × 10−4 | |
| HCOOH, C2H6O | 2.4 ± 1.2 × 10−5 |
Notes. The X-ray emission spectrum used is the TW Hya one from Nomura et al. (2007), to which we applied an attenuation factor corresponding to nH = 1023 cm2.
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