氧吸附银表面的光学SHG研究  

Optical SHG study on oxygen adsorbed silver surface

作　　者：李乐 刘杨华 翁公达 王文澄[1] 章志鸣[1] 

机构地区：[1]复旦大学物理系,200433 [2]苏州大学物理系

出　　处：《中国激光》1990年第11期665-668,共4页Chinese Journal of Lasers

摘　　要：本文报道用光学二次谐波产生法(SHG)在超高真空环境内对银氧吸附体系所作的实验研究。研究表明,分子氧仅存在于表面低温区,当温度高于175K时分子氧发生解离,生成原子氧。当温度高于330K时,分子氧解离完毕。Optical second-harmonic-generation study on the adsorption of oxygen on a polycrystalline Ag in an UHV chamber is reported. It demonstrates that oxygen is only adsorbed in molecular state at low Ag temperature. Heating up to 175K leads to dissociation of the oxygen mole cules, resulting in an atomic oxygen adsorbtion. At 330K, Ag surface is covered completely by the atomic oxygen.

关 键 词：氧 银 表面催化 吸附 SHG 解离 

分 类 号：O614.122[理学—无机化学]