Auflistung Zinātniskie raksti (CFI) / Scientific articles nach Autor "Elsts, Edgars"
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Afterglow, TL and OSL properties of Mn2+-doped ZnGa2O4 phosphor
Luchechko, Andriy; Zhydachevskyy, Yaroslav; Ubizskii, Sergii; Kravets, Oleh; Popov, Anatoli I.; Rogulis, Uldis; Elsts, Edgars; Suchocki, Andrzej; Bulur, Enver (Nature Publishing Group, 2019)Zinc gallate (ZnGa2O4) spinel ceramics doped with Mn2+ ions was prepared by a solid-state reaction at 1200 °C in air. Manganese concentration was equal to 0.05 mol.% of MnO with respect to ZnO. Ceramics produced in this ... -
Cladding-Pumped Erbium/Ytterbium Co-Doped Fiber Amplifier for C-Band Operation in Optical Networks
Supe, Andis; Olonkins, Sergejs; Udalcovs, Aleksejs; Senkans, Ugis; Murnieks, Rihards; Gegere, Lilita; Prigunovs, Dmitrijs; Grube, Jurgis; Elsts, Edgars; Spolitis, Sandis; Ozolins, Oskars; Bobrovs, Vjaceslavs (MDPI, 2021)Space-division multiplexing (SDM) attracts attention to cladding-pumped optical amplifiers, but they suffer from a low pump power conversion efficiency. To address this issue, ytterbium (Yb3+) and erbium (Er3+) co-doping ... -
The Effect of Fast Kr Ion Irradiation on the Optical Absorption, Luminescence, and Raman Spectra of BaFBr Crystals
Akilbekov, Abdirash; Kenbayev, Daurzhan; Dauletbekova, Alma; Polisadova, Elena; Yakovlev, Victor; Karipbayev, Zhakyp; Shalaev, Alexey; Elsts, Edgars; Popov, Anatoli I. (MDPI, 2023)In this work, using photoluminescence (PL), optical absorption (OA), Raman spectroscopy (RS), and atomic force microscopy (AFM), the radiation damage of BaFBr crystals irradiated with 147 MeV 84Kr ions to fluences (1010–1014) ... -
FIBRE OPTICAL COUPLER SIMULATION BY COMSOL MULTIPHYSICS SOFTWARE
Elsts, Edgars; Supe, A.; Spolitis, S.; Zakis, K.; Olonkins, S.; Udalcovs, A.; Murnieks, R.; Senkans, U.; Prigunovs, D.; Gegere, L.; Draguns, K.; Lukosevics, Ingars; Ozolins, O.; Grube, Jurgis; Bobrovs, V. (Sciendo, 2022)The paper presents a simulation model developed for a special optical coupler intended for coupling radiation from signal and pump sources used for the realization of cladding-pumped doped fibre amplifiers. The model is ... -
Investigation of the Effect of PbO Doping on Telluride Glass Ceramics as a Potential Material for Gamma Radiation Shielding
Kozlovskiy, Artem L.; Shlimas, Dmitriy I.; Zdorovets, Maxim V.; Elsts, Edgars; Konuhova, Marina; Popov, Anatoli I. (MDPI, 2023)The purpose of this paper is to study the effect of PbO doping of multicomponent composite glass-like ceramics based on TeO2, WO3, Bi2O3, MoO3, and SiO2, which are one of the promising materials for gamma radiation shielding. ... -
Investigation of the Efficiency of Shielding Gamma and Electron Radiation Using Glasses Based on TeO2-WO3-Bi2O3-MoO3-SiO to Protect Electronic Circuits from the Negative Effects of Ionizing Radiation
Kozlovskiy, Artem; Shlimas, Dmitriy I.; Zdorovets, Maxim V.; Popova, Elena; Elsts, Edgars; Popov, Anatoli I. (MDPI, 2022)This article considers the effect of MoO3 and SiO additives in telluride glasses on the shielding characteristics and protection of electronic microcircuits operating under conditions of increased radiation background or ... -
Low-temperature studies of Cr3+ ions in natural and neutron-irradiated Mg-Al spinel
Mironova-Ulmane, Nina; Popov, Anatoli I.; Krieke, Guna; Antuzevics, Andris; Skvortsova, V.; Elsts, Edgars; Sarakovskis, Anatolijs (American Institute of Physics, 2020)Original results on the EPR and photoluminescence Cr3+ ions in natural magnesium aluminum spinel (MgAl2O4) are presented. The photoluminescence spectra of Cr3+ ions in natural MgAl2O4 have been measured before and after ... -
Study of Metal Leaching from Printed Circuit Boards by Improved Electrochemical Hydrochlorination Technique Using Alternating Current
Serga, Vera; Zarkov, Aleksej; Shishkin, Andrei; Elsts, Edgars; Melnichuks, Maksims; Maiorov, Mikhail; Blumbergs, Ervins; Pankratov, Vladimir (MDPI, 2023)This paper presents the results of the leaching of metals from computer PCBs by electrochemical hydrochlorination using alternating current (AC) with an industrial frequency (50 Hz). Leaching was carried out with a ...