Water Formation through a Quantum Tunneling Surface Reaction, OH + H2, at 10 K

Autor:	Oba, Y., Watanabe, N., Hama, T., Kuwahata, K., Hidaka, H., Kouchi, A.
Rok vydání:	2012
Předmět:	Astrophysics - Galaxy Astrophysics Physics - Chemical Physics
Zdroj:	The Astrophysical Journal, 749:67, 2012
Druh dokumentu:	Working Paper
DOI:	10.1088/0004-637X/749/1/67
Popis:	The present study experimentally demonstrated that solid H2O is formed through the surface reaction OH + H2 at 10 K. This is the first experimental evidence of solid H2O formation using hydrogen in its molecular form at temperatures as low as 10 K. We further found that H2O formation through the reaction OH + H2 is about one order of magnitude more effective than HDO formation through the reaction OH + D2. This significant isotope effect results from differences in the effective mass of each reaction, indicating that the reactions proceed through quantum tunneling. Comment: 12 pages, 10 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1202.1035 Zobrazit plný text záznamu View this record from Arxiv