Measurements of energy partitioning in H2 formation by photolysis of amorphous water ice

Akihiro Yabushita, Tetsuya Hama, Daisuke Iida, Noboru Kawanaka, Masahiro Kawasaki, Naoki Watanabe, Michael N.R. Ashfold, Hans Peter Loock

研究成果: Contribution to journalArticle

23 引用 (Scopus)

抜粋

We demonstrate experimentally that photodissociation of amorphous solid water at 100 K results in formation of H2 molecules with an ortho/para ratio of gOPR = 3. Two distinct mechanisms can be identified: endothermic abstraction of a hydrogen atom from H2O by a photolytically produced H atom yields vibrationally cold H2 products, whereas exothermic recombination of two H-atom photoproducts yields translationally and internally hot H2. These results are in accord with predictions by molecular dynamics calculations and their astrophysical implications are discussed.

元の言語英語
ページ(範囲)L69-L72
ジャーナルAstrophysical Journal
682
発行部数1 PART 2
DOI
出版物ステータス出版済み - 1 1 2008

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

フィンガープリント Measurements of energy partitioning in H<sub>2</sub> formation by photolysis of amorphous water ice' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Yabushita, A., Hama, T., Iida, D., Kawanaka, N., Kawasaki, M., Watanabe, N., Ashfold, M. N. R., & Loock, H. P. (2008). Measurements of energy partitioning in H2 formation by photolysis of amorphous water ice. Astrophysical Journal, 682(1 PART 2), L69-L72. https://doi.org/10.1086/590531