Seeking the Good Fitting Procedure of PALS Polymer Spectra

Nicolas Laforest; Jérémie De Baerdemaeker; Corine Bas; Charles Dauwe

doi:10.4028/www.scientific.net/MSF.607.64

Paper Titles

A Phenomenological Description of the PALS Response in Glass - Forming Systems
p.48

Momentum Distributions of Ortho-Positronium Dependent on Electronic State at Free Volume Walls in Insulators
p.53

Free Volume and Oxygen Permeability in Polymers Related to Polymer Electrolyte Fuel Cells
p.58

Effect of Oxygen on the Free Volume Property of Poly (Ether-Urethane) Irradiated by Neutron
p.61

Seeking the Good Fitting Procedure of PALS Polymer Spectra
p.64

Studying Polyamide Water Separation Film Using Slow Positron Beam
p.67

Positron Annihilation Lifetime Study of Graft-Type Fluorinated Polymer Electrolyte Membranes
p.70

Analysis of Radiation Induced Phenomena in a Polymer Electrolyte Membrane with Positron Annihilation Technique
p.73

The Interface of Multi-Phase Polymer Systems Studied by Positron Annihilation
p.76

HomeMaterials Science ForumMaterials Science Forum Vol. 607Seeking the Good Fitting Procedure of PALS Polymer...

Seeking the Good Fitting Procedure of PALS Polymer Spectra

Abstract:

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.