Positron annihilation lifetime spectroscopy

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Positron Annihilation Lifetime Spectroscopy and Large Molecule Diffusion into a Polyurethane Matrix

Macromolecules, 2011
Positron annihilation lifetime spectroscopy (PALS) measurements are reported on a three polyurethane (PU) materials created by the reaction of polymeric toluene diisocyanate with either ethylene glycol, 1,10-decanediol, or a silicone containing diol.
Ward, S. A., Pethrick, R. A.
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A fast detector for single-shot positron annihilation lifetime spectroscopy

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007
Abstract When an intense sub-nanosecond positron pulse impinges upon a target, a pulse of γ-rays is created which can yield information concerning electron–positron pairs just prior to annihilation. Many conventional γ-ray detectors are unable to exploit the timing information contained within such pulses, and we describe here the development of a ...
D.B. Cassidy, A.P. Mills
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Various types of polysiloxanes studied by positron annihilation lifetime spectroscopy

Journal of Molecular Structure, 2014
Abstract In the work, linear poly(vinylsiloxanes) with regular distributions of vinyl groups along chains, the networks obtained by their hydrosilylation with various hydrogensiloxanes, products of pyrolysis of such networks as well as the networks prepared via reaction of low-molecular siloxanes have been studied by positron anihilation lifetime ...
Anna Nyczyk-Malinowska +3 more
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Investigation of surface defects in BaTiO3 nanopowders studied by XPS and positron annihilation lifetime spectroscopy

Applied Surface Science, 2022
Krzysztof Siemek, Piotr Konieczny, Leonid Korotkov +2 more
exaly

Microstructure of Cellulose Studied by Positron Annihilation Lifetime Spectroscopy