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

G. Dlubek; Ch Hübner; S. Eichler

doi:10.1002/(SICI)1521-396X(199904)172:2<303::AID-PSSA303>3.0.CO;2-C

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

G. Dlubek^*, Ch Hübner, S. Eichler

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Physik

8 Zitate (Scopus)

Abstract

Positron lifetime experiments of high statistical accuracy were performed for various polyethylene samples with different degrees of crystallinity (X_c = 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 X_c. τ₄ arose from o-Ps annihilation in holes of the amorphous phase while τ₃ may be attributed to crystals.

Originalsprache	Englisch
Zeitschrift	Physica Status Solidi (A) Applied Research
Jahrgang	172
Ausgabenummer	2
Seiten (von - bis)	303-315
Seitenumfang	13
ISSN	0031-8965
DOIs	https://doi.org/10.1002/(SICI)1521-396X(199904)172:2<303::AID-PSSA303>3.0.CO;2-C
Publikationsstatus	Veröffentlicht - 01.04.1999

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10.1002/(SICI)1521-396X(199904)172:2<303::AID-PSSA303>3.0.CO;2-C

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AU - Dlubek, G.

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AU - Eichler, S.

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AB - 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.

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JO - Physica Status Solidi (A) Applied Research

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

Abstract

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