Seeking the good fitting procedure of PALS polymer spectra

摘要：

Positron annihilation lifetime measurements on polymethylmethacrylate (PMMA) at low temperature were performed. Different discrete fitting procedures have been used to analyze the experimental data. It shows that the extracted parameters depend strongly on the fitting procedure. The physical meaning of the results is discussed. The blob model seems to give the best annihilation parameters.

关键词： amorphous polymers positron blob model low temperature spectrum analysis

作者: Nicolas LAFOREST Jérémie De BAERDEMAEKER Corine BAS Charles DAUWE

作者单位: LMOPS-UMR5041,Savoie Université,Campus Scientifique,73376 Le Bourget-du-lac Cedex,France NUMAT,Depar NUMAT,Department of Subatomic and Radiation Physics,Ghent University,Proefstuinstraat 86,9000 Ghent, LMOPS-UMR5041,Savoie Université,Campus Scientifique,73376 Le Bourget-du-lac Cedex,France

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: 64-66

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）