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A One-Step Synthesis of Dispersed Bismuth Orthogermanate Powder and its Performance for Alpha- and Gamma-Radiation Detection
ChemistrySelect. 2023. Vol. 8. No. 3. Article e202204590.
Varvara O. Veselova, Gajtko O., Volodin V., Shafranov M., Egorysheva A.
Simple co-precipitation procedure was used to synthesize Bi4Ge3O12 (BGO) powder. The obtained powder was tested for radiation detection properties. Flash time have decreased by 50 % compared to a single crystal for both α- and γ-produced scintillation. Faster flash time allows to create radiation detectors with better time and space resolution, while use of BGO in powder form allows to reduce the cost of detectors.
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English
Бондаренко Г.Г., Фишер М. Р., Кристя В. И., Известия РАН. Серия физическая 2026 Т. 90 № 4 С. 867–874
Сформулирована модель катодного слоя тлеющего газового разряда при наличии на
части рабочей поверхности катода тонкой диэлектрической пленки. Показано, что переход тлеющего разряда в дуговой разряд, сопровождающийся значительным увеличением плотности разрядного тока и уменьшением катодного падения напряжения, происходит наиболее быстро, если
пленка занимает примерно половину поверхности катода. ...
Added: September 4, 2026
Budkov Y., Journal of Chemical Physics 2026 Vol. 165 No. 9 Article 094902
We derive the stress tensor of a flexible polymer solution within the Gaussian-chain self-consistent field theory (SCFT) without invoking the ground-state dominance (GSD) approximation. Starting from a covariant formulation of the single-chain partition function in a background metric, we obtain the symmetric stress tensor expressed through the full Edwards propagators. The result contains the local ...
Added: September 2, 2026
Kobtsev Danil, Albert J., Nitzan M. et al., Applied Sciences (Switzerland) 2026 Vol. 16 No. 17 Article 8577
AIVBVI semiconductors, particularly lead chalcogenides, remain key materials for mid-wave infrared (MWIR) photodetection due to their narrow bandgap and exceptional carrier transport properties. However, the realization of high-quality p-type PbTe thin films, suitable for p–n junction devices, remains a technological challenge. In this work, we report the fabrication of high-mobility p-type PbTe thin films grown on ...
Added: August 30, 2026
Belousov Y., Кискин М. А., Sidoruk A. et al., Australian Journal of Chemistry 2022 Vol. 75 No. 9 P. 572–580
Four new complexes [Ln(pfaa)3(H2O)2]n (Ln = Eu (1), Tb (2)) and [Ln2Cd2(pfaa)10 (phen)2(EtOH)2]·2MeCN (Ln = Eu (3), Tb (4), phen = 1,10-phenanthroline) based on pentaphorphenylacetic acid (Hpfaa) have been prepared and completely investigated. The structures of compounds 1 and 3 were studied by single crystal X-ray diffraction analysis: the isostructural complexes 1 and 2 represent ...
Added: August 26, 2026
Mazur D., Petr E. Brandyshev, Doronin S. et al., Electrochimica Acta 2026 Vol. 577 Article 149729
The electric double layer (EDL) at a single-crystal metal surface is controlled not only by the electrolyte composition and the electrode potential, but also by the atomic structure of the surface itself. This makes the Ag(hkl)/NaF interface a stringent test for continuum theories of the EDL. In the third part of our series, we examine ...
Added: August 20, 2026
Budkov Y., Kalikin N., Journal of Chemical Physics 2026 Vol. 165 Article 064506
A self-consistent statistical-mechanical theory of the Hall effect in electrolyte solutions is developed by extending the self-consistent Debye–Hückel–Onsager (SCDHO) framework to crossed electric and magnetic fields. The theory incorporates non-local ionic charge distributions via Slater-type form factors, regularizing the Coulomb interaction at short range, and accounts for dielectric friction through ion-specific coefficients, employing experimental values ...
Added: August 12, 2026
Novikov A., New Journal of Chemistry 2026 Vol. 50 P. 13931–13957
The rational design of coinage metal nanocarriers requires a mechanistic understanding of metal-drug binding and predictive descriptors that translate molecular interactions into design rules. Using DFT (B3LYP-D3BJ/def2-TZVP, SMD water), we systematically investigated the binding of 5-fluorouracil (5-FU) and levodopa (l-DOPA) to neutral and cationic homo- and heteronuclear dimers of Au, Ag, and Cu (Au2, Ag2, ...
Added: August 12, 2026
G. G. Bondarenko, Kristya V. I., Savichkin D. O. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2026 Vol. 20 No. 2 P. 417–423
A model of a glow gas discharge in a mixture of argon and mercury vapor is formulated in the presence
of a thin insulating film on the cathode surface. Dependences of the discharge characteristics on the
mixture temperature are calculated in the range of its variation, in which a noticeable contribution to ionization
of the working gas is ...
Added: August 1, 2026
Voropaeva D., S. Novikova, I. Stenina et al., Solid State Ionics 2026 Vol. 445 Article 117288
Composite gel polymer electrolytes based on a perfluorinated sulfonic acid cation-exchange MF-4SC membrane
containing surface-sulfonated nanoparticles of aluminum oxide, cerium (IV) oxide, and titanium oxide (sAl2O3,
sCeO2, and sTiO2, respectively) were prepared by casting from a dispersion in N,N-dimethylformamide and
plasticized with a 1,3-dioxolane/1,2-dimethoxyethane mixture. The influence of the filler nature on ionic conductivity,
solvent uptake, activation energy, lithium ...
Added: July 30, 2026
Dmitry Vasilyev, Gorev V., Ikhsanov R. et al., Journal of Materials Science 2026 No. 61 P. 25452–25470
The orthorhombic phase of 𝛼-Mo2 C is a key component in electrocatalytic applications, as Mo2C-based catalysts can exhibit catalytic performance comparable to or exceeding that of noble metals. Despite its technological relevance, theoretical understanding of the anisotropy in the thermal expansion and related thermoelastic properties of 𝛼-Mo2 C remains limited. In this work, first-principles calculations ...
Added: July 23, 2026
Borovitskaya I. V., Pimenov V. N., Korshunov S. N. et al., Physics of Atomic Nuclei 2026 Vol. 89 No. 1 P. S48–S55
The effect of high-power pulsed laser radiation (LR) generated in the GOS 1001 setup in the
Q-modulated mode (with a flux power density q equal to 1 × 1014 W/m2, pulse duration t = 50 ns, and the
number of pulses N from 1 to 8 in vacuum) on the structure and microhardness of the surface of ...
Added: July 22, 2026
Korogod D., Shapeev A., Ivan S. Novikov, Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 2 Article 024104
We present two models with explicit long-range electrostatics in the form of Coulomb interactions. Both models include point charges depending on their local atomic environments, and the second model also conserves a total charge of an atomic system. We combine the proposed long-range models with the local moment tensor potential (MTP) and demonstrate that they ...
Added: July 22, 2026
Kilinc N., ALI I., Economies 2026 Vol. 14 No. 7 Article 277
The increasingly rapid process of de-dollarization in the context of growing geopolitical fragmentation has significantly altered the monetary dynamics of the global economy, thereby posing important questions about economic resilience and sustainable development in the emerging world. This research investigates de-dollarization-related macro-financial conditions and their association with economic resilience in the BRICS+ countries during the ...
Added: July 14, 2026
Moshkina E., Molokeev M., Zolotov A. et al., Journal of Alloys and Compounds 2026 Vol. 1077 Article 189412
A wide series of substitutions in a subsystem of small radii cations M = Al, Cr, Fe, Ga, Sc is possible in rare-earth borates ReM3(BO3)4 with the huntite structure. However, the existence of these compounds where M = Mn still raises doubts. The study presents a synthetic approach developed in the framework of the flux method allowing for the required ...
Added: June 29, 2026
Yastrebinsky R. N., Bondarenko G.G., Pavlenko V. I. et al., Inorganic Materials: Applied Research 2024 Vol. 15 No. 2 P. 319–327
The paper presents experimental studies of the attenuation of neutron and photon radiation of a nuclear reactor by a radiationprotective metal hydride composite, as well as the distribution of dose and spatial-energy characteristics of primary and secondary gamma radiation in the material. It is shown that the formation of the gamma radiation dose rate behind the protection ...
Added: May 25, 2024
Polesskiy S., Сетдиков Р. М., Tuv A. et al., В кн.: Электронные средства и системы управления: материалы докладов XIХ Международной научно-практической конференции, 15–17 ноября 2023 г. В 2 частях, часть 1.Ч. 1.: Томск: В-Спектр, 2023. С. 128–131.
Gamma ray spectrometers are devices designed to measure energy and intensity
gamma quanta in various samples of substances or materials. They are used in many fields of science and
techniques, including nuclear physics, medical diagnostics, radiochemical research and control of
environmental safety. The design of a gamma-ray spectrometer and its principles are considered.
type of work. The possibility of ...
Added: February 26, 2024
Aleksandr L. Tuv, Maksim S. Akatov, Rinat M. Setdikov et al., , in: 2023 Seminar on Signal Processing.: IEEE, 2023. Ch. 84 P. 146–149.
Added: February 10, 2024
IEEE, 2023.
The IEEE Russia North West Section and Saint Petersburg Electrotechnical University “LETI” (ETU “LETI”) are pleased to present the Proceedings of the Seminar on Signal Processing. The Seminar took place on November 22, 2023 in Saint Petersburg Electrotechnical University “LETI”.
The event provided ample opportunities to present new scientific results, exchange experience and establish professional contacts to researchers in the ...
Added: February 10, 2024
Ma Q., Jin H., Wu Q. et al., Advances in Climate Change Research 2023 Vol. 14 No. 2 P. 237–247
Discharge characteristics are crucial for detecting changes in hydrological processes. Recently, the river hydrology) in the Headwater Area of the Yellow River (HAYR) has exhibited erratic regimes (e.g., monotonously declining/low/high hydrograph, even with normal precipitation) under the effects of climate change, permafrost thaw and changes in dam operation. This study integrates hydroclimatic variables (air temperature, precipitation, and potential evapotranspiration) ...
Added: June 12, 2023
Ястребинский Р. Н., Bondarenko G., Карнаухов А. А. et al., Перспективные материалы 2022 № 6 С. 25–36
В работе представлены расчётные данные по сравнительной оценке радиационно-защитных свойств материалов на основе гидрида титана, полученные методом многогруппового моделирования защиты от нейтронного и гамма излучения. Рассмотрено два типа композиций за стальным корпусом реактора и свинцовой защитой. Показано, что гамма-излучение за защитой из гидрида титана формируется захватным излучением, возникающим в начальных слоях защиты. Вторичное гамма-излучение, образующееся ...
Added: August 27, 2022
Akatov M., Tuv A., Kaplun A. et al., , in: Proceedings of the 2022 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (ElConRus).: St. Petersburg: -, 2022. Ch. 2 P. 111–114.
Added: April 28, 2022
Puzachenko Y. G., Sandlerskiy R., Krenke A. et al., Ecological Modelling 2016 Vol. 319 P. 255–274
A method to assess the thermodynamic variables on regional scale using MODIS multispectral band measurements (MOD09GA product) was developed. It was applied to describe the spatial and temporal variability of thermodynamic variables within the western part of the East European Plain in Russia. Seasonal dynamics of thermodynamic variables was described for the main types of ...
Added: March 27, 2022
Telnova N., Современные проблемы дистанционного зондирования Земли из космоса 2017 Т. 14 № 6 С. 97–107
Northern Eurasian forest-steppe and steppe encompass huge region where observed and projected climate change and in particular change in precipitation regime demonstrate high spatial heterogeneity. In this study,
spatial and temporal variations of croplands and grasslands productivity in the main agricultural regions of
Russia and adjacent countries are indicated by means of sum annual NDVI time series ...
Added: April 20, 2020
Rahman M., Hettiarachchi P., Cooray V. et al., Atmosphere 2019 Vol. 10 No. 4 P. 1–9
We present observations of X-rays from laboratory sparks created in the air at atmospheric pressure by applying an impulse voltage with long (250 mu s) rise-time. X-ray production in 35 and 46 cm gaps for three different electrode configurations was studied. The results demonstrate, for the first time, the production of X-rays in gaps subjected ...
Added: February 20, 2020