Do MELT or CONTIN programs accurately reveal the o-Ps lifetime distribution in polymers? II. Semicrystalline polymers

G. Dlubek*, Ch Hübner, S. Eichler

*Corresponding author for this work
8 Citations (Scopus)

Abstract

Positron lifetime experiments of high statistical accuracy were performed for various polyethylene samples with different degrees of crystallinity (Xc = 43, 60, and 70%). Four lifetime components were resolved using the MELT, CONTIN or the discrete-term LIFSPECFIT routines. Two long-lived components appeared, their lifetimes and intensities varied systematically with Xc. τ4 arose from o-Ps annihilation in holes of the amorphous phase while τ3 may be attributed to crystals.

Original languageEnglish
JournalPhysica Status Solidi (A) Applied Research
Volume172
Issue number2
Pages (from-to)303-315
Number of pages13
ISSN0031-8965
DOIs
Publication statusPublished - 01.04.1999

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