Positronium formation in room temperature ionic liquids

摘要：

Positron annihilation age-momentum correlation measurements (AMOC) were performed for room temperature ionic liquids (IL) to investigate positronium (Ps) formation process. The solvation time of free electrons in IL is longer than in usual molecular liquids. And hence IL is very useful materials to investigate fast reactions such as Ps formation. On the other hand, Ps formation is a good tool to investigate the dry electrons. The para-Ps annihilation lifetime is about 125ps and then the effect of dry electrons should be seen on the S(t) parameters made by the age-momentum correlation measurements. The slow Ps formation was observed in the room temperature ionic liquids.

关键词： positron positronium ionic liquids age-momentum correlation (AMOC)

作者: Tetsuya Hirade

作者单位: Nuclear Science and Engineering Directorate ,Japan Atomic Energy Agency,319-1195 Tokai,Japan;Graduate School of Science and Engineering,Ibaraki University,4-12-1 Narusawa,Hitachi,Ibaraki,316-8511 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: 232-234

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）