Results 21 to 30 of about 122,225 (247)

About elementary particles

open access: yesЛитьë 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
doaj   +1 more source

Photon-photon interaction in a photon gas [PDF]

open access: yesEurophysics 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.
openaire   +2 more sources

Phase distortions of attosecond pulses produced by resonance-enhanced high harmonic generation

open access: yesNew 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
doaj   +1 more source

Photon–photon scattering: a tutorial [PDF]

open access: yesCanadian 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
openaire   +2 more sources

HIGH ENERGY PHOTON-PHOTON AND ELECTRON-PHOTON COLLISIONS [PDF]

open access: yesInternational 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 ...
openaire   +2 more sources

The conversion coefficients from Нр(10) to effective dose in the fields of photon radiation and their use in the development of occupational exposure models

open access: yesРадиационная 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
doaj   +1 more source

Searches for Ultra-High-Energy Photons at the Pierre Auger Observatory

open access: yesUniverse, 2022
The Pierre Auger Observatory, which is the largest air-shower experiment in the world, offers unprecedented exposure to neutral particles at the highest energies.
The Pierre Auger Collaboration
doaj   +1 more source

Evaluation of the Electron Contamination in Photon Therapy Using BEAMnrc Code

open access: yesمجله 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
doaj   +1 more source

Theory for the Beam Splitter in Quantum Optics: Quantum Entanglement of Photons and Their Statistics, HOM Effect

open access: yesMathematics, 2022
The theory of the beam splitter (BS) in quantum optics is well developed and based on fairly simple mathematical and physical foundations. This theory has been developed for any type of BS and is based on the constancy of the reflection coefficients R ...
Dmitry Makarov
doaj   +1 more source

Quantum Theory of Scattering of Nonclassical Fields by Free Electrons

open access: yesMathematics, 2023
At present, there is no non-perturbative theory of scattering of nonclassical electromagnetic waves by free electrons that describes the scattering process completely with the help of quantum physics.
Dmitry Makarov
doaj   +1 more source

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