Electron-induced carbon tetrachloride Adsorption on Ice

electron-induced adsorption;ozone depletion;ice;Physics

Liu, Hanwen

University of Waterloo

关键词: electron-induced adsorption;    ozone depletion;    ice;    Physics;   

Others  :  https://uwspace.uwaterloo.ca/bitstream/10012/7462/1/Liu_Hanwen.pdf

瑞士|英语

来源: UWSPACE Waterloo Institutional Repository

【 摘 要 】

Charge-induced adsorption is a subject of significance to environmental and biological systems. Ice surface is believed to get charged with potassium deposition. Compared to uncharged ice film, the work function of charged ice film is significantly reduced due to the formation of metastable delocalized excess surface electrons donated by potassium atoms on ice. This charging effect is found to be dependent on temperature. It is also reported that adsorption of carbon tetrachloridewould occur drastically on charged ice surface while almost no adsorption was observed on uncharged ice surface at low temperature. In addition, the results strongly agree with the cosmic-ray-driven electron-induced reaction (CRE) model for ozone depletion.