Results 111 to 120 of about 1,787,488 (253)
He jishuBackgroundThe defects generated during the working process of metal materials have a significant impact on their performance. For example, the radiation-induced embrittlement and hardening of reactor pressure vessel (RPV) steels are a factor of concern ...
WEN Haiyi +6 more
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Single-shot positron annihilation lifetime spectroscopy with LYSO scintillators
, 2016 We have evaluated the application of a lutetium yttrium oxyorthosilicate (LYSO) based detector to single-shot positron annihilation lifetime spectroscopy.
A. M. Alonso +3 more
semanticscholar +1 more source
Comparison of the free volume sizes and shapes determined from crystallographic and PALS data
Nukleonika, 2015 Two different classes of molecular crystals were investigated. The first group was benzenediols, which are characterized by the same chemical composition but a different organization of their crystallographic structures; all of the compounds from this ...
Tydda Maciej, Jasińska Bożena
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Positron Annihilation Lifetime Spectroscopy in the study of defects in materials
HNPS Proceedings, 2019 The Positron Annihilation Lifetime Spectroscopy (PALS) is a valuable method for the study of the open volume defects in materials. The reduced electron density at the vacant/defect site increases the positron lifetime, and positron lifetime increases as the size of defect increases. In the current paper the experimental apparatus for the measurement of
K. Triantou +2 more
openaire +2 more sources
Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity
Membranes, 2015 High free-volume copolymers were prepared via polycondensation with 2,3,5,6,-tetrafluoroterephthalonitrile (TFTPN) in which a portion of the 3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI) of PIM-1 was replaced with dibutyl anthracene maleimide (4bIII)
Muntazim Munir Khan +8 more
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Determination of positron annihilation lifetime spectroscopy instrument timing resolution function and source terms using standard samples [PDF]
, 2019 The extraction of material positron lifetime components from positron annihilation lifetime spectroscopy measurements, performed using conventional unmoderated radionuclide positron sources, requires accurate knowledge of both the spectrometer instrument
Keeble, D. J., Russell, H., Morton, A.
core +1 more source
Investigation of PCM Microcapsules with Paraffin Filling by Positron Lifetime Spectroscopy
Acta Physica Polonica A, 2015 Positron annihilation lifetime spectroscopy was applied to investigate the microcapsules composed of n-eicosane (filling material) and polysiloxane polymer (shell) in the range of temperatures 123-333 K. Pure components of microcapsules were also investigated as a base for interpretation of the measurement results.
openaire +2 more sources
Plastic Deformation of Polypropylene Studied by Positron Annihilation Lifetime Spectroscopy
Macromolecules, 2022 Cezary Makarewicz +3 more
semanticscholar +1 more source
, 1996 We have used positron annihilation lifetime spectroscopy to study the development of damage and annealing behavior of neutron-irradiated reactor pressure-vessel steels.
Gary L. Catchen +2 more
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