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-
Wagner, A. +7 more
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Positron annihilation lifetime spectroscopy at a superconducting electron accelerator [PDF]
Journal of Physics: Conference Series, 2017 The Helmholtz-Zentrum Dresden-Rossendorf operates a superconducting linear accelerator for electrons with energies up to 35 MeV and average beam currents up to 1.6 mA. The electron beam is employed for production of several secondary beams including X-rays from bremsstrahlung production, neutrons, and positrons.
Wagner, A. +10 more
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Single-shot positron annihilation lifetime spectroscopy using a liquid scintillator [PDF]
AIP Advances, 2021 Liquid scintillators provide a fast, single component response. However, they traditionally have a low flashpoint and high vapor pressure. We demonstrate the use of an EJ-309 scintillator (high flashpoint and low vapor pressure variant) to acquire single-
Joshua R. Machacek +2 more
doaj +2 more sources
Integrated anti-electronics for positron annihilation spectroscopy
Scientific ReportsImaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam.
Francesco Guatieri
doaj +3 more sources
A model for single shot positron annihilation lifetime spectroscopy
Journal of Applied PhysicsA model is presented for analyzing positron–electron annihilation spectra obtained using single shot positron annihilation lifetime spectroscopy. The model is tested against data resulting from 1×106 positrons in a single few ns burst impinging on a sample such that the positronium annihilation decay components are accurately reported in a single shot.
Gabriel George
exaly +2 more sources
Open Porosity and Pore Size Distribution of Mesoporous Silica Films Investigated by Positron Annihilation Lifetime Spectroscopy and Ellipsometric Porosimetry. [PDF]
Materials (Basel), 2021 Xiong B +5 more
europepmc +2 more sources
Positron annihilation lifetime spectroscopy at a superconducting electron accelerator [PDF]
, 2023 The Helmholtz-Zentrum Dresden-Rossendorf operates a superconducting linear accelerator for electrons with energies up to 35 MeV and average beam currents up to 1.6 mA.
Wagner, A. +10 more
core +4 more sources
Positron annihilation studies of Eurofer97/ODS steels after helium ion implantation
Nuclear Materials and Energy, 2023 The paper briefly reviews our positron annihilation studies performed on Eurofer97 steel and its ODS variant, performed in the last about 20 years. Various aspects of radiation environments foreseen for these materials were experimentally simulated via ...
Vladimir Slugen +6 more
doaj +1 more source
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
Wagner, A. +6 more
openaire +2 more sources
A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
AIP Advances, 2021 Single shot gamma-induced positron annihilation spectroscopy (GiPS) based on a laser wakefield accelerator is proposed. In this spectroscopy, a large number of gamma rays generated by laser-wakefield accelerated electrons are injected into a sample in a ...
Yonghong Yan +9 more
doaj +1 more source