{"title":"Computer simulation of multi-gigawatt magnetic compression lines","authors":"V. Patrakov, S. Rukin","doi":"10.56761/efre2022.s6-p-017001","DOIUrl":"https://doi.org/10.56761/efre2022.s6-p-017001","url":null,"abstract":"Magnetic compression lines (MCL) are novel solid-state devices for multi-gigawatt sub-nanosecond and picosecond pulse amplification. Their operation is based on the interaction of magnetic field created by a powerful nanosecond or sub-nanosecond pulse with the magnetization vector in a ferrite medium. In this study a numerical model of an MCL was created, based on Maxwell’s equations and Landau-Lifshitz-Gilbert equation for magnetization dynamics. The equation system is solved using COMSOL Multiphysics simulation software. The model shows good agreement with the experimental data. Using the created model, the process of power amplification in MCL was analyzed in terms of magnetic field and magnetization vectors. Based on this analysis, the mechanism of unipolar pulse amplification has been proposed.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130231374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Material processing using arc plasmatrons with thermochemical cathodes","authors":"A. Anshakov, P. Domarov, V. Faleev","doi":"10.56761/efre2022.c1-o-042601","DOIUrl":"https://doi.org/10.56761/efre2022.c1-o-042601","url":null,"abstract":"To heat oxygen-containing media in various technological processes, a special class of electric arc plasma generators is used, which use a thermochemical cathode based on hafnium or zirconium. Information about such electrodes is given and their performance in plasmatrons for cutting metals, spraying powder materials, heating gases with a power of 10–50 kW is shown.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128672463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Илья Сергеевич Лопатин, Ю. Х. Ахмадеев, Александр Петров
{"title":"Бессеточная система генерации низкоэнергитического ионного пучка на основе тлеющего разряда с полым катодом и внешней инжекцией электронов","authors":"Илья Сергеевич Лопатин, Ю. Х. Ахмадеев, Александр Петров","doi":"10.56761/efre2022.c1-p-022503","DOIUrl":"https://doi.org/10.56761/efre2022.c1-p-022503","url":null,"abstract":"Разработана система генерации ионного пучка на основе тлеющего разряда с полым катодом и внешней инжекцией электронов. Система предназначена для ионно- пучкового осаждения покрытий на основе алюминия, в том числе его оксида. Особенностью системы является отсутствие конструктивного элемента, определяющего границу плазмы. Граница плазмы ограничена образованием двойного электростатического слоя между плазмой основного и вспомогательного разрядов. В качестве генератора вспомогательной плазмы использовался ПИНК. Двойной электростатический слой локализовался вблизи эмиссионного окна, через которое осуществлялась встречная эмиссия электронов и ионов. Показано, что диапазон рабочих давлений системы составляет от 0.1 до 1 Па, ток основного разряда составляет единицы ампер. Также показана возможность управления разностью потенциалов на двойном электростатическом слое за счет изменения напряжения горения основного тлеющего разряда с полым катодом и внешней инжекции электронов.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128959537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Vlasov, A. Klopotov, K. Bezukhov, N. Golobokov, M. Syrtanov, G. Volokitin
{"title":"Study of the structure of SiAlON obtained by synthesis with low-temperature plasma energy","authors":"V. Vlasov, A. Klopotov, K. Bezukhov, N. Golobokov, M. Syrtanov, G. Volokitin","doi":"10.56761/efre2022.c1-p-009301","DOIUrl":"https://doi.org/10.56761/efre2022.c1-p-009301","url":null,"abstract":"This article presents the results of studies of the effect of low-temperature plasma on a sample prepared from powders Si 3 N, AlN, urea solution and liquid glass. X-ray phase analysis established, that the use of plasma chemical synthesis produced the phase β-SiAlON compositions Si 5 AlON 7 with hexagonal system (Pearson symbol hP14, space group P6 3 /m. The diffractograms also show an X-ray amorphous phase and traces of initial compounds. A diagram showing the physical and chemical processes occurring during the interaction of the plasma flux with components in plasma chemical synthesis is presented.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122146316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Е.О. Чебыкин, А.В. Павлов, Д.К. Федорова, А.П. Подлосинская, Т. С. Щепанюк, В. Д. Телех
{"title":"Экспериментальное исследование испарения перспективных рабочих тел микро-АИПД","authors":"Е.О. Чебыкин, А.В. Павлов, Д.К. Федорова, А.П. Подлосинская, Т. С. Щепанюк, В. Д. Телех","doi":"10.56761/efre2022.c2-p-028502","DOIUrl":"https://doi.org/10.56761/efre2022.c2-p-028502","url":null,"abstract":"В работе представлены результаты экспериментального исследования и определения параметров световой эрозии фторопласта (C2F4)n. Испарение вызвано облучением образца фторопласта мощным излучением УФ-ВУФ разряда магнитоплазменного компрессора. Спектр излучения разряда включал в себя ВУФ-область. Определение параметров производилось при помощи двухлучевой лазерной голографической интерферометрии","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126386020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Н. А. Лабецкая, И. М. Дацко, С. А. Чайковский, В. Ванькевич, В. Орешкин
{"title":"Плазмообразование в сильных магнитных полях на поверхности двухслойных проводников","authors":"Н. А. Лабецкая, И. М. Дацко, С. А. Чайковский, В. Ванькевич, В. Орешкин","doi":"10.56761/efre2022.s2-o-038701","DOIUrl":"https://doi.org/10.56761/efre2022.s2-o-038701","url":null,"abstract":"Ранее было показано, что использование двухслойной структуры проводника с внешним слоем меньшей проводимости приводит как к задержке начала плазмообразования на его поверхности, так и к подавлению развития неустойчивостей плазмы по сравнению с однородным проводником в полях с максимальной индукцией магнитного поля 200–400 Т. В качестве внешнего слоя использовались титан и цирконий, которые наносились на медный или дюралюминиевый проводник методом вакуумного напыления. В экспериментах, проводившихся на установке МИГ (амплитуда импульса тока до 2.5 МА, фронт нарастания тока 100 нс), в качестве внешнего слоя проводника были использованы молибден и висмут, представлявшимися более перспективными с точки зрения увеличения времени задержки плазмообразования и уменьшения скорости разлета уже образовавшейся плазмы. Было экспериментально показано, что использование молибдена и висмута в качестве внешнего слоя двухслойных проводников не приводит к улучшению результатов по сравнению с титаном и цирконием.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"05 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127215766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Glow of own defects in ZnO polycrystals","authors":"N. Aluker","doi":"10.56761/efre2022.r1-p-047802","DOIUrl":"https://doi.org/10.56761/efre2022.r1-p-047802","url":null,"abstract":"The photoluminescence of ZnO powders at room temperature upon excitation by microsecond pulses from the region of interband transitions and the region of exciton absorption has been studied. In the luminescence spectra, two regions characteristic of ZnO are observed: a short-wavelength region associated in the literature with exciton luminescence, and a long-wavelength region due to the presence of growth structural and impurity defects. The observed long-wavelength glow is divided into components with different glow durations, and several components that form this glow are identified. Experimental results and an analysis of the energy of formation and survival of the main structural defects make it possible to explain the luminescence of ZnO with allowance for the participation of only defects in the anionic sublattice and excitons in the process.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121865526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic fracture of hexagonal close packed alloys","authors":"V. Skripnyak, E. Skripnyak, V. Skripnyak","doi":"10.56761/efre2022.n1-o-038602","DOIUrl":"https://doi.org/10.56761/efre2022.n1-o-038602","url":null,"abstract":"The paper presents the results of 3D numerical simulation of the processes of deformation and ductile fracture of hexagonal close packed titanium and zirconium alloys under dynamic impacts. Based on the generalization of the obtained experimental data, a version of the model is proposed that allows to adequately describe the regularities of plastic deformation during tension, the formation of zones of localization of plastic shears and the development of damage and fracture in a wide range of strain rates and spall fracture in plates under plane shock waves impacts. Proposed constitutive equation described the mechanical response of HCP titanium and zirconium alloys in a wide range of strain rates at the temperatures below temperature of phase transformation. It was shown that using of the kinetic model of the damaged medium is justified at high strain rates in complex stress conditions in the spall zone and around it.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"325 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficiency of moderately relativistic resonant S-band BWO","authors":"P.V. Molchanov, E. Gurnevich","doi":"10.56761/efre2022.s3-o-028901","DOIUrl":"https://doi.org/10.56761/efre2022.s3-o-028901","url":null,"abstract":"The scheme of a resonant relativistic backward wave oscillator (BWO) was proposed by the group of researchers from IHCE SB RASfor efficient generation of high-power microwave radiation in the S-band while maintaining relatively small structure length about 2.5 λ. As far as can being found from publications, the scheme proposed uses high-current relativistic electron beams with energies of 0.7–1.5 MeV and a strong guiding magnetic field (at least 1.5 T, typically 2–3 T). In this paper, we propose a variant of a resonant relativistic backward wave oscillator that operates at moderately relativistic beam energies (450–550 keV) and at guiding magnetic field values starting from 1.3 T. Compared to the original resonant BWO geometry, in the current investigated scheme, the length of the periodic structure is increased by 1 period. For optimization using particle-in-cell code XOOPIC, the length of the insert between the cutoff-neck and the periodic structure, as well as the profiles of two terminal corrugations (defining the reflections from boundaries of periodic structure) are varied. It is shown in the numerical simulation that for a beam energy of 500–550 keV the average radiation power in proposed RBWO reaches level of 1 GW and efficiency is up to 27–28%.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122568927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Электролюминесценция в алмазе","authors":"З.И. Бородулин, М. А. Шулепов","doi":"10.56761/efre2022.n4-p-014802","DOIUrl":"https://doi.org/10.56761/efre2022.n4-p-014802","url":null,"abstract":"В работе представлены результаты исследования электролюминесценции в алмазе при комнатной температуре и приложенном напряжении ~20 В. Для выяснения состава примесей были проведены эксперименты по определению примесно-дефектного состава спектроскопическими методами. Было выявлено, что центры окраски, отвечающие за люминесценцию локализованы в ребрах кристалла и вблизи углублений, нанесенных на одну из граней. Электролюминесценция наблюдается в диапазоне 400–650 нм, с максимальной интенсивностью при 500–514 нм.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128984633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}