Silicon and Hydrogen Chemistry under Laboratory Conditions Mimicking the Atmosphere of Evolved Stars

  title={Silicon and Hydrogen Chemistry under Laboratory Conditions Mimicking the Atmosphere of Evolved Stars},
  author={Mario Accolla and Gonzalo Santoro and Pablo Merino and Lidia Mart{\'i}nez and Guillermo Tajuelo-Castilla and Luis V'azquez and Jes{\'u}s M Sobrado and Marcelino Ag{\'u}ndez and Miguel Jim{\'e}nez-Redondo and V{\'i}ctor J. Herrero and Isabel Tanarro and Jos{\'e} Cernicharo and Jos{\'e} Angel Mart{\'i}n-Gago},
  journal={The Astrophysical Journal},
Silicon is present in interstellar dust grains, meteorites and asteroids, and to date 13 silicon-bearing molecules have been detected in the gas phase toward late-type stars or molecular clouds, including silane and silane derivatives. In this work, we have experimentally studied the interaction between atomic silicon and hydrogen under physical conditions mimicking those in the atmosphere of evolved stars. We have found that the chemistry of Si, H, and H2 efficiently produces silane (SiH4… Expand
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