Results 1 to 10 of about 316,883 (321)

The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2023
The performance of free-space optical (FSO) communications that using an optical amplifier (OA) in the scheme of an amplify-received (AR)-relaying has a major drawback in the detection of input signal quality under the effects of turbulence.
Ucuk Darusalam   +3 more
doaj   +1 more source

Features of cyanine dyes aggregation on differently charged TiO2 matrices

open access: yesChemical Physics Impact, 2023
Changing the polycondensation reaction route, positively and negatively charged TiO2 nanoparticles have been synthesized. On the base of the synthesized TiO2 nanoparticles, porous TiO2 films have been formed with different surface charges.
Polina Pisklova   +6 more
doaj   +1 more source

Composite scintillators based on ZnWO4:Me+ micropowders obtained by solid-state synthesis

open access: yesVìsnik Harkìvsʹkogo nacìonalʹnogo unìversitetu ìmenì V.N. Karazìna. Serìâ: fìzika., 2022
The paper considers the possibility of using the method of heterovalent doping to improve the functional characteristics (light output and afterglow level) of composite scintillators based on ZnWO4 micropowder obtained by solid-stase synthesis.
V.S. Tinkova   +5 more
doaj   +1 more source

Indirect X-ray detectors with single-photon sensitivity

open access: yesJournal of Synchrotron Radiation, 2022
The new generation of synchrotron light sources are pushing X-ray detectors to their limits. Very demanding conditions with unprecedented flux and higher operating energies now require high-performance X-ray detectors combining sensitivity, efficiency ...
Kristof Pauwels, Paul-Antoine Douissard
doaj   +1 more source

The Mu2e Crystal Calorimeter: An Overview

open access: yesInstruments, 2022
The Mu2e experiment at Fermilab will search for the standard model-forbidden, charged lepton flavour-violating conversion of a negative muon into an electron in the field of an aluminium nucleus.
Nikolay Atanov   +38 more
doaj   +1 more source

Towards the possibility to combine LOFAR and GNSS measurements to sense ionospheric irregularities

open access: yesJournal of Space Weather and Space Climate, 2023
Inhomogeneities within the ionospheric plasma density affect trans-ionospheric radio signals, causing radio wave scintillation in the amplitude and phase of the signals.
Flisek Paweł   +18 more
doaj   +1 more source

Observations and modeling of scintillation in the vicinity of a polar cap patch

open access: yesJournal of Space Weather and Space Climate, 2022
Small-scale ionospheric plasma structures can cause scintillation in radio signals passing through the ionosphere. The relationship between the scintillated signal and how plasma structuring develops is complex.
Lamarche Leslie J.   +2 more
doaj   +1 more source

The Effect of Midnight Temperature Maximum Winds on Post‐Midnight Equatorial Spread F

open access: yesSpace Weather, 2021
The SAMI3/equatorial spread F (Sami3 is also a model of the ionosphere/ESF) code is used to simulate the growth of equatorial plasma bubbles in the presence of a background wind field based on measured winds.
J. Krall   +3 more
doaj   +1 more source

The Sensitization of Scintillation in Polymeric Composites Based on Fluorescent Nanocomplexes

open access: yesNanomaterials, 2021
The sensitization of scintillation was investigated in crosslinked polymeric composite materials loaded with luminescent gold clusters aggregates acting as sensitizers, and with organic dye rhodamine 6G as the emitting species.
Irene Villa   +11 more
doaj   +1 more source

Scintillation Increase Induced by Focusing (Invited)

open access: yesPhotonics, 2023
We show that the focusing of a random electromagnetic beam by a lens gives rise to a scintillation index at the geometrical focus that generally differs from that of the incident beam.
Jia Xu   +3 more
doaj   +1 more source

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