Possible correlation between pore architecture and ion transport in supported liquid membranes: Slow positron beam studies

摘要：

Depth dependent Doppler broadened measurements have been carried out in commercially available PTFE based supported liquid membranes using Slow Positron Accelerator at Radiochemistry (SPARC). The specified pore dimensions are of 0.2, 0.45, 1.2 and 5 μ that will be referred to as A,B,C & D, respectively. S-parameter and 3γ/2γ ratios as a function of energy or depth are evaluated. Measurements on a non-porous Teflon tape is also carried out as reference. The data has been fitted using VEPFIT to get the diffusion length of positron/positronium. The bulk S-parameters of A & B have quite similar value(0.513-0.515) higher than that for C & D which are 0.504 & 0.509 respectively. SEM studies reveals the texture and pore size distributions to be similar in A&B quite different from that of C&D.

作者: P.K.Pujari D.Dutta K.Sudarshan S.K.Sharma P.Maheswari S.K.Gupta A.V.R.Reddy

作者单位: Radiochemistry Division,Bhabha Atomic Research Centre,Trombay,Mumbai-400 085,India Nuclear Physics Division,Bhabha Atomic Research Centre,Trombay,Mumbai-400 085,India

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: 104

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）