Results 21 to 30 of about 442,874 (245)
Resonance, 1949 The problem of the behavior of positrons and electrons in given external potentials, neglecting their mutual interaction, is analyzed by replacing the theory of holes by a reinterpretation of the solutions of the Dirac equation. It is possible to write down a complete solution of the problem in terms of boundary conditions on the wave function, and ...
openaire +3 more sources
Merkuriev Cut-off in e+ − H Multichannel Scattering Calculations
Atoms, 2016 We present the results of positron-Hydrogen multichannel scattering calculations performed on the base of Faddeev-Merkuriev equations. We discuss an optimal choice of the Merkuriev’s Coulomb splitting parameters.
Vitaly A. Gradusov +2 more
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Atoms, 2021 Triply differential data are presented for the 200 eV positron and electron impact ionization of argon. Six electron emission energies between 2.6 and 19 eV, and for scattering angles of 2, 3, and 4 degrees cover a momentum transfer range of 0.16 to 0.31
R. D. DuBois, O. G. de Lucio
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Positron-electron annihilation momentum transfer to trapped deuterons
AIP Advances, 2019 The probability of positron annihilation momentum transfer to a trapped deuteron is calculated based on neutron measurements from 2H(d,n)3He reactions in deuterated palladium thin films. Deuterium gas loading in Pd thin films creates a high D/Pd fraction
Ryan Weed +4 more
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Polarized Positron Beams via Intense Two-Color Laser Pulses. [PDF]
Physical Review Letters, 2019 The generation of ultrarelativistic polarized positrons during the interaction of an ultrarelativistic electron beam with a counterpropagating two-color petawatt laser pulse is investigated theoretically.
Yue-Yue Chen +4 more
semanticscholar +1 more source
Current imaging techniques in large vessel vasculitis
Научно-практическая ревматология, 2022 Instrumental imaging modalities play an important role in the diagnosis, evaluation of treatment efficacy and early detection of recurrences in patients with large vessel systemic vasculitis (SV). There’s no currently available universal imaging modality
T. V. Beketova +2 more
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Angewandte Chemie, 2019 Positron emission tomography (PET) is a molecular imaging technology that provides quantitative information about function and metabolism in biological processes in vivo for disease diagnosis and therapy assessment.
Xiaoyun Deng +6 more
semanticscholar +1 more source
Atoms, 2021 A detailed study of positron impact elastic scattering from methane and silane is carried out using a model potential consisting of static and polarization potentials.
Dibyendu Mahato +2 more
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Towards an Improved Test of the Standard Model’s Most Precise Prediction
Atoms, 2019 The electron and positron magnetic moments are the most precise prediction of the standard model of particle physics. The most accurate measurement of a property of an elementary particle has been made to test this result.
G. Gabrielse +3 more
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18F-fluorodeoxyglucose positron emission tomography / computed tomography in primary Ewing sarcoma of the lung [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2022 Introduction. Ewing sarcoma is rare in medical practice, and evaluating positron emission tomography / computed tomography (PET/CT) imaging of soft tissue Ewing sarcoma is a challenge. Primary Ewing sarcoma of the lung is an infrequent diagnosis.
Zivgarević Ljiljana, Žunić Svetlana
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