Positron annihilation lifetime spectroscopy study of Kapton thin foils [PDF]
Journal of Physics D: Applied Physics, 2015 Variable energy positron annihilation lifetime spectroscopy (VE-PALS) experiments on polyimide material Kapton are reported. Thin Kapton foils are widely used in a variety of mechanical, electronic applications. PALS provides a sensitive probe of vacancy-related defects in a wide range of materials, including open volume in polymers.
G. S. Kanda +4 more
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Measurements of Defect Structures by Positron Annihilation Lifetime Spectroscopy of the Tellurite Glass 70TeO2-5XO-10P2O5-10ZnO-5PbF2 (X = Mg, Bi2, Ti) Doped with Ions of the Rare Earth Element Er3+ [PDF]
Nanoscale Research Letters, 2017 The objective of the study was the structural analysis of the 70TeO2-5XO-10P2O5-10ZnO-5PbF2 (X = Mg, Bi2, Ti) tellurite glasses doped with ions of the rare-earth elements Er3+, based on the PALS (positron annihilation lifetime spectroscopy) method of ...
K. Pach +4 more
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Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy [PDF]
Nanomaterials, 2021 The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites.
Xiaobing Han +6 more
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Positron Annihilation Lifetime Spectroscopy Insight on Free Volume Conversion of Nanostructured MgAl2O4 Ceramics [PDF]
Nanomaterials, 2021 Herein we demonstrate the specifics of using the positron annihilation lifetime spectroscopy (PALS) method for the study of free volume changes in functional ceramic materials.
Halyna Klym +3 more
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Ultrashort, MeV-scale laser-plasma positron source for positron annihilation lifetime spectroscopy [PDF]
Physical Review Accelerators and Beams, 2021 Submicron defects represent a well-known fundamental problem in manufacturing since they can significantly affect performance and lifetime of virtually any high-value component. Positron annihilation lifetime spectroscopy is arguably the only established
Thomas L. Audet +12 more
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Positron-Annihilation Lifetime Spectroscopy using Electron Bremsstrahlung [PDF]
Journal of Physics: Conference Series, 2015 A new type of an intense source of positrons for materials research has been set up at the superconducting electron linear. The source employs hard X-rays from electron- bremsstrahlung production generating energetic electron-positron pairs inside the sample under investigation. CW-operation allows performing experiments with significantly reduced pile-
A. Wagner +7 more
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Tomographic Positron Annihilation Lifetime Spectroscopy [PDF]
Journal of Physics: Conference Series, 2014 Positron annihilation lifetime spectroscopy serves as a perfect tool for studies of open-volume defects in solid materials such as vacancies, vacancy agglomerates, and dislocations. Moreover, structures in porous media can be investigated ranging from 0.3 nm to 30 nm employing the variation of the Positronium lifetime with the pore size. While lifetime
A. Wagner +6 more
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Positron annihilation lifetime spectroscopy study of roller burnished magnesium alloy [PDF]
Nukleonika, 2015 The effect of roller burnishing on Vickers’ hardness and positron lifetimes in the AZ91HP magnesium alloy was studied. The microhardness increases with an increase in the burnishing force and with a decrease in the feed. The comparison of various methods
Zaleski Radosław +2 more
doaj +2 more sources
Probing the Free Volume in Polymers by Means of Positron Annihilation Lifetime Spectroscopy. [PDF]
Polymers (Basel), 2023 Consolati G, Nichetti D, Quasso F.
europepmc +3 more sources
Positron-annihilation-lifetime response and broadband dielectric relaxation spectroscopy: Diethyl phthalate [PDF]
Physical Review E, 2007 We report the results of a combined phenomenological analysis of the data from positron-annihilation-lifetime spectroscopy (PALS) and the relaxation data from broadband dielectric spectroscopy (BDS) on diethyl phthalate (DEP). The ortho-positronium (o-Ps) lifetime, tau3, as a function of temperature over a temperature range from 67 K up to 300 K is ...
J. Bartoš +6 more
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