We performed 0.3 keV soft X-ray irradiation of a methanol ice at 8 K under ultra-high vacuum conditions. To the best of our knowledge, this is the first time that soft X-rays are used to study photolysis of ice analogs. Despite the low irradiation dose of 10−6 photons per molecule, the formation of formaldehyde has been observed. The results of our experiments suggest that X-rays may be a promising candidate to the formation of complex molecules in regions where UV radiation is severely inhibited.
Ciaravella, A., Munoz Caro, G., Jimenez Escobar, A., Cecchi-Pestellini, C., Giarrusso, S., Barbera, M., et al. (2010). Soft X-Ray Irradiation of Methanol Ice: Implication for H2CO Formation in Interstellar Regions. THE ASTROPHYSICAL JOURNAL LETTERS, 722, L45-L48 [10.1088/2041-8205/722/1/L45].
Soft X-Ray Irradiation of Methanol Ice: Implication for H2CO Formation in Interstellar Regions
BARBERA, Marco;
2010-01-01
Abstract
We performed 0.3 keV soft X-ray irradiation of a methanol ice at 8 K under ultra-high vacuum conditions. To the best of our knowledge, this is the first time that soft X-rays are used to study photolysis of ice analogs. Despite the low irradiation dose of 10−6 photons per molecule, the formation of formaldehyde has been observed. The results of our experiments suggest that X-rays may be a promising candidate to the formation of complex molecules in regions where UV radiation is severely inhibited.
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