Results 21 to 30 of about 4,639 (219)
Positronium–atom collisions [PDF]
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004 19 pages, 8 figures. Nucl. Instrum.
Walters, Harry +3 more
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Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography [PDF]
, 2021 Charged lepton system symmetry under combined charge, parity, and time-reversal transformation (CPT) remains scarcely tested. Despite stringent quantum-electrodynamic limits, discrepancies in predictions for the electron–positron bound state (positronium
Kisielewska, Daria +37 more
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Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud
European Physical Journal C: Particles and Fields, 2023 We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN.
P. Adrich +64 more
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Physics Letters B, 2020 We consider a general relativistic fermion antifermion pair that they interact via an attractive Coulomb type interparticle interaction potential in the 2+1 dimensional spacetime background spanned by cosmic string. By performing an exact solution of the
Abdullah Guvendi, Yusuf Sucu
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Positronium Confined in Nanocavities: The Role of Electron Exchange Correlations
Nanomaterials, 2021 Positronium atoms (Ps) are commonly employed as a probe to characterize nanometric or subnanometric voids or vacancies in nonmetallic materials, where Ps can end up confined.
Fabrizio Castelli +2 more
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, 2021 Positronium is a bound state of one electron and one positron. It can be seen as the lightest neutral 'atom'. It can also be seen as a neutralized electron or a neutralized positron.
Nagashima, Yasuyuki +3 more
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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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Positronia’ Clouds in Universe
Universe, 2021 The intense emission of 511 keV photons from the Galactic center and within terrestrial thunderstorms is attributed to the formation of parapositronia clouds.
Igor M. Dremin
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Quantum suppression of antihydrogen formation in positronium-antiproton scattering
Nature Communications, 2017 The intriguing behaviour of positronium scattering has its role in antimatter studies. Here the authors have predicted the quantum suppression of the cross-section for antihydrogen formation in positronium scattering with antiprotons, by including the ...
A. S. Kadyrov +3 more
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Positronium block function, and trapping of positronium in vacancies, in ice [PDF]
, 1977 Positron annihilation techniques (PAT) were used to study the behaviour of positronium (Ps) in pure H,0 and D-0 ice in the temperature interval -185 < t < 2°C. At temperatures below roughly -100°C, the linear-slit angular correlation curves consisted of a broad component (fwhm = 10.5 mrad), resulting from free positron and Ps pick-off ...
Mogensen, O.E., Eldrup, M.
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