Results 21 to 30 of about 666,893 (288)
Learning cellular morphology with neural networks
Nature Communications, 2019 Volume electron microscopy data of brain tissue can tell us much about neural circuits, but increasingly large data sets demand automation of analysis. Here, the authors introduce cellular morphology neural networks and successfully automate a range of ...
Philipp J. Schubert +4 more
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Литьë и металлургия, 2023 It is shown that only stable particles can be elementary particles. The fundamental elementary particles are positive, negative and neutral particles of space.
V. Yu. Stetsenko
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Photon-photon interaction in a photon gas [PDF]
Europhysics Letters (EPL), 2000 Using the effective Lagrangian for the low energy photon-photon interaction the lowest order photon self energy at finite temperature and in non-equilibrium is calculated within the real time formalism. The Debye mass, the dispersion relation, the dielectric tensor, and the velocity of light following from the photon self energy are discussed.
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Generation of High-Energy Photons with Large Orbital Angular Momentum by Compton Backscattering [PDF]
, 2011 Usually, photons are described by plane waves with a definite 4-momentum. In addition to plane-wave photons, "twisted photons" have recently entered the field of modern laser optics; these are coherent superpositions of plane waves with a defined ...
L. Dahl +3 more
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Phase distortions of attosecond pulses produced by resonance-enhanced high harmonic generation
New Journal of Physics, 2013 Resonant enhancement of high harmonic generation can be obtained in plasmas containing ions with strong radiative transitions resonant with harmonic orders. The mechanism for this enhancement is still debated.
S Haessler +9 more
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Photon–photon scattering: a tutorial [PDF]
Canadian Journal of Physics, 2012 Long-established results for low-energy photon–photon scattering, γγ → γγ, have recently been questioned. We analyze that claim and demonstrate that it is inconsistent with experience. We demonstrate that the mistake originates from an erroneous manipulation of divergent integrals and discuss the connection with another recent claim about the Higgs ...
Liang, Yi, Czarnecki, Andrzej
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HIGH ENERGY PHOTON-PHOTON AND ELECTRON-PHOTON COLLISIONS [PDF]
International Journal of Modern Physics A, 1998 The advent of a next linear e±e- collider and back-scatterd laser beams will allow the study of a vast array of high energy processes of the Standard Model through the fusion of real and virtual photons and other gauge bosons. As examples, I discuss virtual photon scattering γ*γ*→X in the region dominated by BFKL hard Pomeron exchange and report the ...
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BosonSampling with Lost Photons [PDF]
, 2015 BosonSampling is an intermediate model of quantum computation where linear-optical networks are used to solve sampling problems expected to be hard for classical computers.
Aaronson, Scott, Brod, Daniel J.
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Радиационная гигиена, 2023 The paper presents the values of the conversion coefficients from the operational quantity, HP(10)/ to the protection quantity, effective dose (E). The conversion coefficients were calculated in a number of points located at a depth of 10 mm under the ...
V. Yu. Golikov
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Evaluation of the Electron Contamination in Photon Therapy Using BEAMnrc Code
مجله دانشکده پزشکی اصفهان, 2019 Background: Today, high-energy photon beams are widely used in the treatment of all types of cancers. However, the production of electrons as contaminants in the photon pathway provides the necessity for research in this field.
Nahid Chegeni +3 more
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