Author/Authors :
Minissale، نويسنده , , M. and Congiu، نويسنده , , E. and Baouche، نويسنده , , S. and Chaabouni، نويسنده , , H. and Moudens، نويسنده , , A. and Dulieu، نويسنده , , F. and Manicَ، نويسنده , , G. and Pirronello، نويسنده , , V.، نويسنده ,
Abstract :
The oxidation of nitrogen monoxide has implications for the complex atmospheric chemistry of Antarctica, as well as for planetary atmospheres. In this study we unveil that O2 adsorbed on a cold surface reacts with a very high efficiency with NO coming from the gas phase to form NO2. Via two molecular beams, O2 and NO molecules are aimed at a cold (10 K) sample held in a UHV chamber. NO2 is formed independently of the surface composition and morphology. We show that the NO + O2 reaction occurs mainly through the direct Eley Rideal mechanism to form nitrogen oxides (NO2, N2O3, N2O4).
