Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques最新文献_第8页

Analysis of One Four-Parameter Model for the Current Response of a Field Emission Cathode 场发射阴极电流响应的一个四参数模型分析

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700370

N. V. Egorov, A. Yu. Antonov, M. I. Varayun’

引用次数: 0

Modification of Graphite under High-Intensity High-Temperature Ion Irradiation 高强度高温离子辐照下石墨的改性研究

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700382

L. B. Begrambekov, N. A. Puntakov, A. V. Grunin

{"title":"Modification of Graphite under High-Intensity High-Temperature Ion Irradiation","authors":"L. B. Begrambekov, N. A. Puntakov, A. V. Grunin","doi":"10.1134/S1027451026700382","DOIUrl":"10.1134/S1027451026700382","url":null,"abstract":"The interaction of hydrogen, deuterium, and helium plasma with fine-grained isotropic graphite under high ion flux density was studied. During irradiation with ions at a flux density of 1.4 × 1022 ion/(m2 s) and surface temperatures of 1000 K and higher, the number of carbon atoms removed by sputtering far exceeded the amount corresponding to the observed surface erosion. This indicates that carbon atoms are removed not only from the surface but also from the bulk of the sample, leading to the formation of a porous layer in the near-surface region of graphite. An increase in temperature results in an increase in the thickness of the porous layer, which reaches approximately 1.5 mm at a surface temperature of 2300 K. A decrease in ion flux density leads to a reduction in the thickness of the porous layer, and at 1.4 × 1020 ion/(m2 s) the porous layer does not form. The replacement of deuterium ions with helium ions reduces the thickness of the porous layer, which is attributed to a higher average number of collisions of helium ions with carbon atoms in the surface layers, resulting in stronger lattice damage and hindering diffusion of atoms from the bulk to the surface. A decrease in sample thickness leads to a sharp increase in the sputtering coefficient of graphite, since the surface does not receive a sufficient flux of carbon atoms from the bulk.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"74 - 86"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614415","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

Estimation of the Dynamic Conductivity of Natural Disordered Carbon by Microwave Reflection Spectra in the Range of 8–56 GHz 用8-56 GHz微波反射光谱估计天然无序碳的动态电导率

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700291

I. V. Antonets, Ye. A. Golubev

{"title":"Estimation of the Dynamic Conductivity of Natural Disordered Carbon by Microwave Reflection Spectra in the Range of 8–56 GHz","authors":"I. V. Antonets, Ye. A. Golubev","doi":"10.1134/S1027451026700291","DOIUrl":"10.1134/S1027451026700291","url":null,"abstract":"The microwave reflection coefficient of natural disordered carbon, shungites and anthraxolites, in the range of 8–56 GHz was studied. Frequency spectra of microwave dynamic conductivity were obtained from the measured reflection coefficient. Conductivity at frequencies of 9, 15, 23, 32, and 55 GHz was compared with static conductivity at direct current. For some shungite samples over the entire frequency range, microwave dynamic conductivity exceeds static conductivity by no more than 1.5–2.5 times, whereas for others the excess reaches 10–20 times and increases with frequency. For anthraxolites, the excess of microwave conductivity over static conductivity can reach two orders of magnitude. The conductivity of individual carbon regions was determined, and its contribution to the microwave conductivity of naturally occurring disordered carbon was estimated. The excess of microwave dynamic conductivity over static conductivity arises from currents in carbon regions induced by microwave radiation. The results are interpreted taking into account the structural features of naturally occurring disordered carbon.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"1 - 7"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614417","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}

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Method of the Investigation of the Magneto-Optical Response of the Individual Magnetic Nanolayers of a Three-Layer System 三层体系中单个磁性纳米层磁光响应的研究方法

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700618

R. V. Selyukov, A. V. Prokaznikov, V. A. Paporkov, M. A. Liakh, V. V. Naumov

引用次数: 0

Thermophysical Features of Plasma Electrolytic Treatment with Jet Feed of Electrolyte onto a Flat Surface 在平面上喷射电解液等离子体电解处理的热物理特性

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700643

S. A. Kusmanov, S. Yu. Shadrin, I. V. Tambovskiy, T. L. Mukhacheva, T. M. Golubeva, N. L. Smirnova, B. L. Krit, S. N. Grigoriev

{"title":"Thermophysical Features of Plasma Electrolytic Treatment with Jet Feed of Electrolyte onto a Flat Surface","authors":"S. A. Kusmanov, S. Yu. Shadrin, I. V. Tambovskiy, T. L. Mukhacheva, T. M. Golubeva, N. L. Smirnova, B. L. Krit, S. N. Grigoriev","doi":"10.1134/S1027451026700643","DOIUrl":"10.1134/S1027451026700643","url":null,"abstract":"The paper presents studies of thermophysical characteristics of local plasma electrolytic treatment with jet feed of electrolyte to the treated area of a flat surface of stainless steel plate in an electrolyte based on ammonium chloride solution (10%). A description of a setup providing plasma electrolytic treatment of samples and small-sized workpieces with jet feed of electrolyte to a local area of the treated surface is presented. The influence of hydrodynamic parameters of treatment on the electrophysical characteristics of the process is studied with varying the distance between the sprayer and the treated surface, the diameter of the nozzle outlet, and the electrolyte flow rate. Effective hydrodynamic and electrophysical conditions for implementing local treatment, providing the possibility of carrying out chemical-thermal treatment of a flat metal surface, are determined. Models are proposed for calculating the temperature distribution in a thin metal plate during local treatment, on the basis of which methods for determining heat flows are developed. The influence of processing conditions on the heating temperature and its distribution over the surface, as well as heat exchange in the near-electrode region, is studied. The specifics of heat exchange of a low-temperature vapor-gas layer with a processed sample and an aqueous electrolyte is described. Dependences of heat flows into the sample and electrolyte on processing conditions are obtained.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"252 - 261"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614334","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

Implantation of AISI 321 Steel with High-Power-Density Nitrogen Ion Beams with Submillisecond Duration 亚毫秒高功率密度氮离子束注入AISI 321钢

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S102745102670062X

A. I. Ivanova, O. S. Korneva, I. A. Bozhko, S. V. Dektyarev, A. V. Gurulev, V. A. Grudinin

{"title":"Implantation of AISI 321 Steel with High-Power-Density Nitrogen Ion Beams with Submillisecond Duration","authors":"A. I. Ivanova, O. S. Korneva, I. A. Bozhko, S. V. Dektyarev, A. V. Gurulev, V. A. Grudinin","doi":"10.1134/S102745102670062X","DOIUrl":"10.1134/S102745102670062X","url":null,"abstract":"The impact of a repetitively pulsed nitrogen ion beam with a high power density of 4–11.2 kW/cm2 on the surface of AISI 321 steel was shown for the first time to substantially change the morphology, elemental and phase composition, microstructure, and operational properties of the samples. Numerical modeling demonstrated the dynamics of changes in the surface temperature of AISI 321 steel under the impact of a nitrogen ion beam with submillisecond duration. High-intensity implantation with nitrogen ion beams leads to the formation of ion-doped layers up to 25 μm deep within 60 min. The results of X-ray phase analysis of surface ion-doped layers of modified samples are presented. Steel modification increased the wear resistance by up to 3585 times and the hardness by up to 5 times. Tribological tests showed a 30% decrease in the friction coefficient. Corrosion-resistance tests of modified samples showed a low corrosion rate of up to 0.02 mm/year, which is typical of highly resistant materials.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"238 - 245"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614484","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

Memristive States in Low-Dimensional Structures Controlled by Photo-Electro-Induced Phase Transitions 由光电诱导相变控制的低维结构中的忆阻态

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700515

G. N. Panin, E. V. Emelin, O. O. Kapitanova, M. A. Builova, P. B. Sorokin

引用次数: 0

Surface Radiation Disinfection of Confectionery Products 糖果制品表面辐射消毒

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700485

L. I. Kozlova, M. E. Balezin, S. Yu. Sokovnin

{"title":"Surface Radiation Disinfection of Confectionery Products","authors":"L. I. Kozlova, M. E. Balezin, S. Yu. Sokovnin","doi":"10.1134/S1027451026700485","DOIUrl":"10.1134/S1027451026700485","url":null,"abstract":"Verification of the capabilities of surface radiation sterilization technology was carried out on samples of confectionery products manufactured by Ura Confectioners LLC. Cottage cheese filled pastries were used as an example. The products were placed in a plastic Correx (polyethylene terephthalate, thickness 0.3 mm), hermetically packed in a polymer film (biaxially oriented polypropylene, thickness 40 μm). Batches of samples were irradiated using URT-0.5M and URT-1M accelerators. Each irradiated batch contained 28 products of the same type. Dosimetry was performed in advance with plastic detectors placed on top, under the film packaging, and under the correx. Microbiological tests were carried out at the testing laboratory center of the Federal Budgetary Healthcare Institution Centre for Hygiene and Epidemiology of the Chelyabinsk Oblast in accordance with GOST 10 444.12-2013, 10 444.15-94, 31 659-2012, 31 746-2012, and 31 747-2012. All batches of processed products complied with the GOSTs after 8 months of storage. Organoleptic evaluation of the consumer properties of the products was performed immediately after irradiation and after storage. No significant differences in product quality were detected. The minimum dose of 5 kGy, one-sided irradiation geometry, and the minimum electron energy of 0.5 MeV are sufficient for disinfection of products, indicating a low initial level of contamination during production.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"136 - 139"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613992","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

Investigation of the Patterns of Radical Formation in Electron-Irradiated Polymethylphenylsiloxane Varnish Modified with SiO2 Nanoparticles of Various Concentrations 不同浓度SiO2纳米粒子修饰的电子辐照聚甲基苯基硅氧烷清漆中自由基形成模式的研究

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700576

M. M. Mikhailov, V. A. Goronchko, A. N. Lapin, S. A. Yuryev

{"title":"Investigation of the Patterns of Radical Formation in Electron-Irradiated Polymethylphenylsiloxane Varnish Modified with SiO2 Nanoparticles of Various Concentrations","authors":"M. M. Mikhailov, V. A. Goronchko, A. N. Lapin, S. A. Yuryev","doi":"10.1134/S1027451026700576","DOIUrl":"10.1134/S1027451026700576","url":null,"abstract":"The absorption spectra recorded in vacuum before and after irradiation with accelerated electrons (in situ) were studied for the original polymethylphenylsiloxane varnish and the varnish modified with SiO2 nanoparticles with a concentration of 0.1 to 10 wt %. It was established that irradiation of the varnish results in the formation of 6 types of radicals due to the rupture of the main chain and the detachment and decomposition of methyl and phenyl groups. An explanation was proposed for the processes of radical generation and accumulation in the original varnish and the varnish modified with nanoparticles. The nature of radicals C3H3, Si‒C, Si‒CH, Si‒CH3, Si‒O, and H‒Si‒O was determined from the energy position of the elementary absorption bands. The dependences of the areas of the radical absorption bands on the concentration of nanoparticles in the modified varnish were investigated. It was found that with an increase in the concentration of nanoparticles the number of radicals of all types formed during electron irradiation decreases compared to the unmodified varnish. The decrease in the concentration of radicals during irradiation of the modified varnish may be due to three processes: relaxation of radiation defects on nanoparticles, as on small-sized structural defects; creation of radiation-resistant protective layers from nanoparticles on the surface of the varnish; and formation of organoceramic complexes.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"204 - 209"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613995","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

Analysis of Structure and Element Distribution in Layers of Nanolaminar Nb/Zr Systems after Hydrogenation 加氢后纳米层Nb/Zr体系层间结构及元素分布分析

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-07-24 DOI: 10.1134/S1027451026700503

A. D. Lomygin, M. A. Kruglyakov, D. G. Krotkevich, R. S. Laptev

{"title":"Analysis of Structure and Element Distribution in Layers of Nanolaminar Nb/Zr Systems after Hydrogenation","authors":"A. D. Lomygin, M. A. Kruglyakov, D. G. Krotkevich, R. S. Laptev","doi":"10.1134/S1027451026700503","DOIUrl":"10.1134/S1027451026700503","url":null,"abstract":"In this work, hydrogen behavior in magnetron-sputtered nanolaminated coatings composed of alternating niobium and zirconium layers (Nb/Zr) is investigated. The samples were subjected to gas-phase hydrogenation at 350°C and 10 atm. X-ray structural analysis (XRD) was used to assess phase transformations, and glow-discharge optical emission spectrometry (GD-OES) was employed to study depth distribution profiles. This combined approach enabled analysis of both structural changes in the coatings and features of the hydrogen depth distribution. GD-OES profiles were interpreted with allowance for specific sputtering effects in multilayer systems. It was established that hydrogen is predominantly localized in the zirconium layers, while both the degree of retention and the spatial distribution depend on the coating architecture. The largest hydrogen uptake was observed for systems with individual layer thicknesses of 25–50 nm. Subsequent thermal treatment causes hydrogen desorption, the extent of which is likewise determined by layer thickness and periodicity. The results indicate that the hydrogen-related properties of Nb/Zr nanolaminates can be controlled via architectural parameters. The study is of interest for the design of functional multilayer materials for hydrogen-energy applications, including storage, buffering, and flow control systems.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 1","pages":"146 - 157"},"PeriodicalIF":0.4,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614481","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