Positronium formation in room temperature ionic liquids

摘要：

Positron lifetime measurements and age-momentum correlation measurements were performed for several room temperature ionic liquids to investigate free electrons through positronium (Ps, a bond state of an electron and a positron) formation. Ps formation is well explained by the spur reaction model 1 for insulators. It is similar to the geminate recombination of cations and free electrons. An injected positron forms spurs (cations and excess electrons) and thermalizes at the terminal spur where the positron has a chance to form Ps with one of excess electrons. When positrons and/or electrons are localized somewhere, their mobility becomes much smaller and Ps cannot be formed usually.

作者: Tetsuya Hirade

作者单位: Nuclear Science and Engineering Directorate,Japan Atomic Energy Agency,319-1195 Tokai,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: 25

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）