First-Principles Calculations of Positronium Annihilation Characteristics in Solids

摘要：

Positronium, a hydrogen-like atom formed by a positron bound with an electron, has been widely observed in low-dielectric media, such as surface of solids, defects in polymers and some oxides, inner-surface of microvoids in insulators, semiconductors, and even metals. In these low-dielectric media, surviving time (i.e., lifetime) and annihilation momentum density distribution of a positronium are found to be very sensitive to its surrounding environment. Therefore, positronium has been a powerful tool to study defects and voids in polymers and insulators.

作者: Z.Tang Y.Nagai K.Inoue T.Takeuchi M.Hasegawa

作者单位: Key Laboratory of Polar Materials and Devices,Ministry of Education of China,Department of Electroni Institute for Materials Research,Tohoku University,Sendai 980-8577,Japan

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 4

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）