Results 31 to 40 of about 4,639 (219)
Imaging a positronium cloud in a 1 Tesla
EPJ Web of Conferences, 2019 We report on recent developments in positronium work in the frame of antihydrogen production through charge exchange in the AEgIS collaboration [1]. In particular, we present a new technique based on spatially imaging a cloud of positronium by collecting
Camper Antoine +63 more
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Review of physics program at J-PET [PDF]
EPJ Web of ConferencesThe Jagiellonian - Positron Emission Tomograph (J-PET) is a multi purpose detector for tests of discrete symmetries and quantum entanglement of photons originating from the decay of positronium atoms.
Czerwiński Eryk
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He jishu, 2022 BackgroundSince the 1990s, porous materials have been widely used in the fields of gas adsorption, electrochemistry, drug delivery, catalyst and catalyst carrier because of their excellent physical and chemical properties such as high specific surface ...
LI Chongyang, WANG Feiyue, CHEN Zhiquan
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Atoms, 2020 Positrons play a major role in the emission of solar gamma-rays at energies from a few hundred keV to >1 GeV. Although the processes leading to positron production in the solar atmosphere are well known, the origin of the underlying energetic particles ...
Nat Gopalswamy
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A Method to Measure Positron Beam Polarization Using Optically Polarized Atoms
Atoms, 2023 We outline an experimental technique for measuring the degree of polarization of a positron beam using an optically pumped, spin-polarized Rb target. The technique is based on the production and measurement of the ortho- and para-positronium fractions ...
Joshua R. Machacek +3 more
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Positronium in melanoma spheroids
, 2022 It was recently demonstrated that newly invented positronium imaging may be used for improving cancer diagnostics by providing additional information about tissue pathology with respect to the standardized uptake value currently available in positron ...
Karimi, Hanieh +2 more
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Can We Observe the Gravitational Quantum States of Positronium?
Advances in High Energy Physics, 2015 We consider the feasibility of observing the gravitational quantum states of positronium. The proposed scheme employs the flow-throw technique used for the first observation of this effect with neutrons.
P. Crivelli +2 more
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Developing a phantom for the positronium imaging evaluation [PDF]
, 2022 In this contribution, a concept for a new phantom for positronium imaging with PET scanners is described. The proposed phantom is based on the NEMA IEC phantom in which six high-activity spheres are filled with solutions characterized by a different mean
Niedźwiecki, Szymon +2 more
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What could be learnt from positronium for quarkonium?
, 2004 In order to fulfill Low's theorem requirements, a new lowest order basis for bound state decay computations is proposed, in which the binding energy is treated non-perturbatively.
Workshop on Positronium Physics +1 more
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