Is Kapton* Really That Simple?
C. Dauwe a, J. De Baerdemaeker a, B. Van Waeyenberge a, N. Djourelov a, b and N. Laforest a, c
a Ghent University, Department of Subatomic and Radiation Physics, Proeftuinstraat 86, B-9000 Gent, Belgium
b Institute of Nuclear Research and Nuclear Energy, 72 Tzarigradsko Shoosse, 1784 Sofia, Bulgaria
c LMOPS - Université de Savoie, LMOPS - UMR 5041, Campus Scientifique, 73376 Le Bourget-du Lac, France
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Received: 3 09 2007;
Age momentum correlation experiments in kapton has revealed the existence of two positron states corresponding to the trapping of positrons on the partially negatively charged O and/or N sites in the polymer chain. A young age broadening of the annihilation line shape is also observed and is attributed to the annihilation in flight of the positrons.
DOI: 10.12693/APhysPolA.113.1315
PACS numbers: 34.80.Lx, 41.75.Fr, 36.10.Dr, 82.30.Gg