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Directed gas phase formation of silicon dioxide and implications for the formation of interstellar silicates

Author

Listed:
  • Tao Yang

    (University of Hawai’i at Mānoa
    East China Normal University)

  • Aaron M. Thomas

    (University of Hawai’i at Mānoa)

  • Beni B. Dangi

    (University of Hawai’i at Mānoa
    Florida Agricultural and Mechanical University)

  • Ralf I. Kaiser

    (University of Hawai’i at Mānoa)

  • Alexander M. Mebel

    (Florida International University)

  • Tom J. Millar

    (Queen’s University Belfast)

Abstract

Interstellar silicates play a key role in star formation and in the origin of solar systems, but their synthetic routes have remained largely elusive so far. Here we demonstrate in a combined crossed molecular beam and computational study that silicon dioxide (SiO2) along with silicon monoxide (SiO) can be synthesized via the reaction of the silylidyne radical (SiH) with molecular oxygen (O2) under single collision conditions. This mechanism may provide a low-temperature path—in addition to high-temperature routes to silicon oxides in circumstellar envelopes—possibly enabling the formation and growth of silicates in the interstellar medium necessary to offset the fast silicate destruction.

Suggested Citation

  • Tao Yang & Aaron M. Thomas & Beni B. Dangi & Ralf I. Kaiser & Alexander M. Mebel & Tom J. Millar, 2018. "Directed gas phase formation of silicon dioxide and implications for the formation of interstellar silicates," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03172-5
    DOI: 10.1038/s41467-018-03172-5
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