Positron Annihilation Lifetime Spectroscopy on Controlled Pore Glass – Porosimetry and Phase Transition of Gas in Confined Matter

摘要：

Positron Annihilation Lifetime Spectroscopy (PALS) is used to investigate Controlled Pore Glasses (CPG) 1. A common PALS spectrum of controlled pore glass consists of four different lifetime components which have its origin in the annihilation of the p-Ps (τ1=0.125 ns), the annihilation of free positrons (τ2=0.5 ns), the annihilation of the o-Ps in the amorphous region of the glass (τ3=1.5 ns) and the annihilation of o-Ps in the pores of the glass (τ4=1.5 ns to 142 ns). So τ4 contains information about the pore size which can be extracted by utilising approved models like the extended Tao-Eldrup model 2.

作者: S.Thraenert D.Enke R.Krause-Rehberg

作者单位: Department of Physics,Martin-Luther-University,Halle 06120,Germany Department of Chemistry,Martin-Luther-University,Halle 06120,Germany

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: 31

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）