Журнал технической физики最新文献_第4页

Адиабатические волноводные моды трехслойного интегрально оптического волновода 三层光学波导绝热时尚

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.04.55031.292-22

Д. В. Диваков, К. П. Ловецкий, А. Л. Севастьянов, А. А. Тютюнник

引用次数: 0

Reciprocity relations for mechanically induced spin currents in metals in a nonlinear regime 非线性状态下金属中机械诱导自旋电流的互易关系

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/tp.2023.05.56073.258-22

None Ignatjev V.K.

引用次数: 0

Simulation of polycrystalline beryllium sputtering by H, D, T atoms H, D, T原子溅射多晶铍的模拟

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/tp.2023.05.56074.12-23

None Babenko P. Yu., None Mikhailov V. S., None Shergin A. P., None Zinoviev A. N.

{"title":"Simulation of polycrystalline beryllium sputtering by H, D, T atoms","authors":"None Babenko P. Yu., None Mikhailov V. S., None Shergin A. P., None Zinoviev A. N.","doi":"10.21883/tp.2023.05.56074.12-23","DOIUrl":"https://doi.org/10.21883/tp.2023.05.56074.12-23","url":null,"abstract":"The results of modeling the sputtering coefficients of polycrystalline beryllium by hydrogen isotopes in the range of collision energies of 8 eV-100 keV and their dependences on the angle of incidence of the beam on the surface are presented. This data is necessary for estimating the sputtering of the first wall in the ITER tokamak made from beryllium. A strong surface shape influence on obtained results is shown. The limiting cases of a flat potential barrier (smooth surface) and a spherical potential barrier (a surface consisting of spikes) are considered. The effect of collision cascades on the sputtering coefficient has been established. The dependences of the average depth of sputtered particle formation on the bombarding particles energy are obtained for various angles of beam incidence on the target. The energy spectra and angular dependences of the ejection of sputtered particles are calculated for different energies of bombarding beam atoms. It is shown that the presence of an attractive well in the potential of an incident particle surface changes the sputtering coefficient dependence on incidence angle at small glancing angles. Keywords: Sputtering coefficients, energy and angular distributions of sputtered particles, interatomic potential, hydrogen isotopes, beryllium.","PeriodicalId":24036,"journal":{"name":"Журнал технической физики","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135988777","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}

引用次数: 0

Trajectory analysis in a collector with multistage energy recovery for a DEMO prototype gyrotron. Part III. Influence of the spent electron beam parameters DEMO原型回旋管多级能量回收集热器的轨迹分析。第三部分。废电子束参数的影响

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/tp.2023.05.56075.14-23

None Louksha O. I., None Zuev A. S., None Malkin A. G., None Semenov E. S., None Trofimov P. A., None Glyavin M. Yu.

{"title":"Trajectory analysis in a collector with multistage energy recovery for a DEMO prototype gyrotron. Part III. Influence of the spent electron beam parameters","authors":"None Louksha O. I., None Zuev A. S., None Malkin A. G., None Semenov E. S., None Trofimov P. A., None Glyavin M. Yu.","doi":"10.21883/tp.2023.05.56075.14-23","DOIUrl":"https://doi.org/10.21883/tp.2023.05.56075.14-23","url":null,"abstract":"The influence of the spent electron beam parameters on the possibilities of multistage energy recovery in the prototype gyrotron developed for the DEMO project is determined. The characteristics of electrodes and magnetic coils in a collector with four-stage recovery were optimized considering the distributions of electrons' coordinates and velocities obtained as a result of calculating the electron-wave interaction in the cavity. In the trajectory analysis in the collector, a sectioned electron beam was used to suppress the negative influence of the bundles of a toroidal solenoid used to create an azimuthal magnetic field. The possibility of achieving the total efficiency of the gyrotron of approximately 78% was shown, which is close to the maximum total efficiency with ideal separation of electron fractions with different energies, with the current of electrons reflected from the collector not exceeding 1% of the total current of the electron beam. Keywords: Microwave electronics, gyrotron, electron beam, energy recovery.","PeriodicalId":24036,"journal":{"name":"Журнал технической физики","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135988796","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}

引用次数: 0

Влияние остаточных напряжений в стали У8 с грубопластинчатым перлитом на магнитную проницаемость 残余电压对磁导率的粗板珠光体影响

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.05.55458.273-22

В. Г. Кулеев

{"title":"Влияние остаточных напряжений в стали У8 с грубопластинчатым перлитом на магнитную проницаемость","authors":"В. Г. Кулеев","doi":"10.21883/jtf.2023.05.55458.273-22","DOIUrl":"https://doi.org/10.21883/jtf.2023.05.55458.273-22","url":null,"abstract":"The physical reasons for the formation of peaks of that part of the magnetic permeability, which is caused by transitions of only 90-degree domain boundaries µ90(H0) in deformed steel U8 with coarse-plate perlite when the field changes along the back of the hysteresis loop, are considered. It is shown that the orientation relations of the Patch-Pitch between single-crystal ferrite and cementite plates in U8 steel lead to the appearance of a constant angle between the magnetic moments of these plates and, consequently, to the appearance of corresponding local scattering fields. The latter can significantly affect the values of the peak fields of the curve µ90(H0). Theoretical expressions for these fields containing contributions of scattering fields that should be taken into account when determining residual compressive stresses are obtained. It is also shown that to determine the residual stresses, two expressions for peak fields are not enough, and additional experiments are needed, as which it is proposed to use the dependences of the coercive force on elastic tensile stresses. This leads to a complication of the algorithm for determining residual compressive stresses in comparison with the case of low-carbon steels. A method for estimating the values of local scattering fields in the ferrite parts of U8 steel grains with residual compressive stresses is proposed.","PeriodicalId":24036,"journal":{"name":"Журнал технической физики","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90786302","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}

引用次数: 0

Экспериментальное изучение дрейфового движения молекул SF-=SUB=-6-=/SUB=- под действием излучения CO-=SUB=-2-=/SUB=--лазера

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.02.54491.142-22

А.А. Воскобоев, Владимир Александрович Кузьменко, В.С. Межевов, А.Р. Саутин

引用次数: 0

Использование морфометрических величин при изучении рельефа поверхности рентгенооптических элементов

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.07.55770.89-23

А. А. Дедкова, Игорь Васильевич Флоринский, А. К. Чернышев

引用次数: 0

Магнитогидродинамическая неустойчивость расплавленного импульсным током поверхностного слоя металла 表面金属熔融脉冲电流磁流体动力不稳定性

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.08.55983.61-23

С.Д. Самуйлов, И.П. Шербаков, Ю.Н. Бочаров, С. И. Кривошеев, С.Г. Магазинов

引用次数: 0

Определение энергии активации реакции диспропорционирования аморфной пленки GeO-=SUB=-x-=/SUB=- на кварцевой подложке с использованием спектроскопии комбинационного рассеяния света 在石英底座上用光谱学和组合光散射测定激活能量

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.08.55985.74-23

Fan Zhang, M. Vergnat, В. А. Володин

{"title":"Определение энергии активации реакции диспропорционирования аморфной пленки GeO-=SUB=-x-=/SUB=- на кварцевой подложке с использованием спектроскопии комбинационного рассеяния света","authors":"Fan Zhang, M. Vergnat, В. А. Володин","doi":"10.21883/jtf.2023.08.55985.74-23","DOIUrl":"https://doi.org/10.21883/jtf.2023.08.55985.74-23","url":null,"abstract":"Amorphous germanium nanoclusters were formed in the GeOx film on quartz as a result of the disproportionation reaction GeOx→(1- )Ge+ GeO2 during furnace annealing. To determine the reaction activation energy, annealing was carried out at temperatures from 400 to 500 oC. The appearance and growth of amorphous germanium nanoclusters were investigated using Raman spectroscopy. It was found that the position of the Raman scattering peak from amorphous germanium varied with the annealing time, which due to the change in the sizes of nanoclusters, i.e., the phonon localization model can be applied not only to germanium nanocrystals, but also to amorphous germanium clusters, in the case of their ultra-small sizes. In addition, it was found that the saturation time for the formation of amorphous germanium nanoclusters depends exponentially on the annealing temperature. The kinetics analysis of the nanocluster’s formation was carried out within the framework of the Johnson–Mehl–Avrami–Kolmogorov model. The activation energy of the disproportionation reaction was obtained for the first time, which amounted to 1.0±0.1 eV.","PeriodicalId":24036,"journal":{"name":"Журнал технической физики","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81008061","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}

引用次数: 0

Изменение характеристик контактных пятен при протекании токов короткого замыкания через замкнутые сильноточные электрические контакты 通过闭合高压触点电流变化接触点特征

Журнал технической физики Pub Date : 2023-01-01 DOI: 10.21883/jtf.2023.01.54075.233-22

А.В. Хрестин, М. А. Павлейно, М С Сафонов

引用次数: 0