The efficient photodesorption of nitric oxide (NO) ices A laboratory astrophysics study
arXiv:1710.01028 · doi:10.1051/0004-6361/201731653
Abstract
The study and quantification of UV photon-induced desorption of frozen molecules furthers our understanding of the chemical evolution of cold interstellar regions. Nitric oxide (NO) is an important intermediate species in both gas-phase and solid-phase chemical networks. In this work, we present quantitative measurements of the photodesorption of a pure NO ice.We used the tunable monochromatic synchrotron light of the DESIRS beamline of the SOLEIL facility near Paris to irradiate NO ices in the 6 - 13.6 eV range and measured desorption by quadrupole mass spectrometry.We find that NO photodesorption is very efficient, its yield being around 1e-2 molecule per incident photon for UV fields relevant to the diffuse and dense interstellar medium. We discuss the extrapolation of our results to an astrophysical context and we compare photodesorption of NO to previously studied molecules.
arXiv commentA&A, Accepted
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Cited by in corpus (3)
- X-ray photodesorption from water ice in protoplanetary disks and X-ray dominated regions
- Vacuum ultraviolet photoabsorption spectroscopy of space-related ices: 1 keV electron irradiation of nitrogen- and oxygen-rich ices
- Vacuum ultraviolet photodesorption and photofragmentation of formaldehyde-containing ices