scholarly journals Simulation of ultra-relativistic electrons and positrons channeling in crystals with MBN Explorer

2013 ◽  
Vol 252 ◽  
pp. 404-418 ◽  
Author(s):  
Gennady B. Sushko ◽  
Victor G. Bezchastnov ◽  
Ilia A. Solovʼyov ◽  
Andrei V. Korol ◽  
Walter Greiner ◽  
...  
2021 ◽  
Vol 16 (12) ◽  
pp. P12042
Author(s):  
A.A. Savchenko ◽  
W. Wagner

Abstract We present a new C++ module for simulation of channeling radiation to be implemented in Geant4 as a discrete physical process. The module allows simulation of channeling radiation from relativistic electrons and positrons with energies above 100 MeV for various types of single crystals. In this paper, we simulate planar channeling radiation applying the classical approach in the dipole approximation as a first attempt not yet considering other contributory processes. Simulation results are proved to be in a rather good agreement with experimental data.


2004 ◽  
Vol 01 (02) ◽  
pp. 271-314 ◽  
Author(s):  
JEAN-MARIE BARBAROUX ◽  
MOUEZ DIMASSI ◽  
JEAN-CLAUDE GUILLOT

We consider a Hamiltonian with ultraviolet and infrared cutoffs, describing the interaction of relativistic electrons and positrons in the Coulomb potential with photons in Coulomb gauge. The interaction includes both interaction of the current density with transversal photons and the Coulomb interaction of charge density with itself. We prove that the Hamiltonian is self-adjoint and has a ground state for sufficiently small coupling constants.


2009 ◽  
Vol 18 (10) ◽  
pp. 1511-1515 ◽  
Author(s):  
ANITA REIMER

Despite many advances in AGN physics, observationally as well as theoretically, the relativistic matter composition of extragalactic jets remains concealed. In contrast to the so called leptonic AGN emission models, hadronic models consider relativistic protons to be present in those sources, in addition to the relativistic electrons and positrons, and possibly cold material. Here I briefly discuss most processes that are commonly believed to characterize the so-called hadronic AGN emission models, and these include leptonic as well as hadronic processes. As an application predictions for the neutrino output during the TeV-flare of 3C 279 in 2006 are provided.


2013 ◽  
Vol 79 (6) ◽  
pp. 1089-1094 ◽  
Author(s):  
IOANNIS KOURAKIS ◽  
MICHAEL MC KERR ◽  
ATA UR-RAHMAN

AbstractA fluid model is used to describe the propagation of envelope structures in an ion plasma under the influence of the action of weakly relativistic electrons and positrons. A multiscale perturbative method is used to derive a nonlinear Schrödinger equation for the envelope amplitude. Criteria for modulational instability, which occurs for small values of the carrier wavenumber (long carrier wavelengths), are derived. The occurrence of rogue waves is briefly discussed.


1981 ◽  
Vol 28 (2) ◽  
pp. 1152-1155 ◽  
Author(s):  
R. H. Pantell ◽  
R. L. Swent ◽  
S. Datz ◽  
M. J. Alguard ◽  
B. L. Berman ◽  
...  

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