Table 1
Summary of water ice photodesorption rate studies, both experimental (“Exp.”) and theoretical (“Theory”), compared with our work.
Reference | Exp./Theory | H2O | OH | O2 | Total(1) | Temp. (K) | Energy (eV) |
---|---|---|---|---|---|---|---|
This work | Exp. | <1.0 | <1.0 | <0.5 | 1.0 ± 0.2 | 20 | 7–10.2 |
Westley et al. (1995) | Exp. | <3.5 | – | – | 3.5 ± 1.8 | 35 | 10.2 |
Öberg et al. (2009a) | Exp. | 0.7 ± 0.4 | 0.9 ± 0.5 | – | 1.6 ± 0.9 | 10 | 7–10.2 |
Cruz-Diaz et al. (2018) | Exp. | 1.3 ± 0.2 | 0.7 ± 0.3 | 0.6 ± 0.1 | 3.2 ± 0.5 | 8 | 7–10.2 |
Fillion et al. (2022)(2) | Exp. | 0.55 ± 0.09 | <0.1 | 0.3 ± 0.2 | 1.25 ± 0.25 | 15 | 7–10.2 |
Andersson & van Dishoeck (2008) | Theor. | 0.14 | 0.25 | – | 0.39 | 10 | 8.5 |
Arasa et al. (2010) | Theor. | 0.15 | 0.3 | – | 0.55 | 10 | 8.5 |
Crouse et al. (2015) | Theor. | 0.3 ± 0.2 | 0.3 ± 0.2 | – | 0.6 ± 0.3 | 11 | 8.5 |
Notes. All desorption rates are given in ×10−3 molecule photon−1. The derived rate upper limits are marked by the “<” notation in front of the value. These limits were obtained by consequently considering desorption of the three dominating oxygen species: intact H2O, OH, and O2. (1)This value represents the loss of water through intact, dissociative, and reactive photodesorption. As production and desorption of one O2 molecule requires the consumption of two H2O molecules, the total photodesorption rate of H2O was obtained through the sum of the photodesorption rate of intact I suggest using words instead of math symbols (i.e., plus/times). H2O + OH + 2× O2. (2)The values listed here are derived from values integrated over the wavelength values covered by the used H2 microwave discharge lamp (see Paardekooper et al. 2016b).
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