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Enhanced coherent transition radiation from midinfrared-laser-driven microplasmas [PDF]

open access: yesScientific Reports, 2022
We present a particle-in-cell (PIC) analysis of terahertz (THz) radiation by ultrafast plasma currents driven by relativistic-intensity laser pulses.
P. B. Glek, A. M. Zheltikov
doaj   +2 more sources

Multistage Positron Acceleration by an Electron Beam-Driven Strong Terahertz Radiation

open access: yesPhotonics, 2023
Laser–plasma accelerators (LPAs) have been demonstrated as one of the candidates for traditional accelerators and have attracted increasing attention due to their compact size, high acceleration gradients, low cost, etc. However, LPAs for positrons still
Jie Zhao   +6 more
doaj   +1 more source

The structure and glass transition behavior of PLLA under the influence of gamma radiation [PDF]

open access: yesHemijska Industrija, 2010
The influence of gamma radiation on the structure and glass transition behavior of poly-L-lactide (PLLA) has been studied. Since PLLA exposed to high-energy radiation in the presence of air is prone to chain scission reactions and large degradation ...
Miličević Dejan S.   +6 more
doaj   +1 more source

Photon avalanche in nanoluminophore obtained by REE silicate evaporation

open access: yesResults in Optics, 2021
A bulk phosphor composition Sr2Y6.8YbEr0.2Si6O26 was synthesized. A nanophosphorus in an amorphous state was obtained from this sample by the method of pulsed electron beam evaporation.
M.G. Zuev   +3 more
doaj   +1 more source

Method of middle-intensive electron beams diagnostics by means of transient radiation [PDF]

open access: yesТехнологія та конструювання в електронній апаратурі, 2010
The general method of diagnostics of transient radiation of ribbon-shaped and axially-symmetric electron beams of small section and high power density is described.
Г. С. Воробьев   +3 more
doaj   +1 more source

Optical transition radiation based transverse beam diagnostics for nonrelativistic ion beams

open access: yesPhysical Review Accelerators and Beams, 2022
The usage of optical transition radiation (OTR) for profile monitoring of relativistic electron beams is well known. This paper presents the case for beam diagnostic application of OTR for nonrelativistic ion beams.
R. Singh, T. Reichert, B. Walasek-Hoehne
doaj   +1 more source

Coherent transition radiation from attosecond electron pulses [PDF]

open access: yesEPJ Web of Conferences, 2019
We show theoretically and by simulations how coherent transition radiation from tilted surfaces can be used for characterization of attosecond free-electron pulses such as used for pump-probe electron microscopy and diffraction.
Tsarev Maxim, Baum Peter
doaj   +1 more source

Longitudinal charge distribution measurement of nonrelativistic ion beams using coherent transition radiation

open access: yesPhysical Review Accelerators and Beams, 2022
Longitudinal charge profile measurements or bunch shape measurements are a challenge for temporally short nonrelativistic bunches. The field profile has a larger longitudinal extent compared to the charge profile for such beams.
R. Singh, T. Reichert
doaj   +1 more source

Characterization of non-relativistic attosecond electron pulses by transition radiation from tilted surfaces

open access: yesNew Journal of Physics, 2018
We consider analytically and numerically the emission of coherent transition radiation by few-femtosecond and attosecond electron pulses. With optimized geometries based on tilted surfaces we avoid the influences of the beam diameter and velocity ...
M V Tsarev, P Baum
doaj   +1 more source

Phenomenology of transition radiation at radio frequencies from ultrahigh-energy showers

open access: yesEPJ Web of Conferences, 2017
We explore transition radiation at MHz-GHz frequencies as a possible way to detect ultrahigh-energy (UHE) particles. We have developed a general method to calculate transition radiation that extends the well-known Zas-Halzen-Stanev (ZHS) algorithm.
Alvarez-Muñiz Jaime   +3 more
doaj   +1 more source

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