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Bulletin of the Russian Academy of Sciences: Physics最新文献

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The Use of Pulsed Corona Discharge Plasma for Air Purification from Acrylonitrile Butadiene Styrene Plastic Volatile Pyrolysis Products with Significantly Different Reactivity 脉冲电晕放电等离子体净化反应性差异显著的丙烯腈-丁二烯-苯乙烯塑料挥发性热解产物的空气
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701704
I. E. Filatov, D. L. Kuznetsov
{"title":"The Use of Pulsed Corona Discharge Plasma for Air Purification from Acrylonitrile Butadiene Styrene Plastic Volatile Pyrolysis Products with Significantly Different Reactivity","authors":"I. E. Filatov,&nbsp;D. L. Kuznetsov","doi":"10.1134/S1062873826701704","DOIUrl":"10.1134/S1062873826701704","url":null,"abstract":"<p>We presented the extended results of the study of the effect of pulse corona discharge plasma on the air contaminated with a mixture of volatile pyrolysis products of acrylonitrile butadiene styrene (ABS) plastic. The main pyrolysis products were determined by GC/MS method: styrene, methyl styrene, toluene, ethylbenzene and isopropyl benzene. Pulsed corona discharge with a duration of 40 ns, an amplitude of 100 kV and a current of 150 A with a pulse repetition rate of 10 Hz was used for the study. During the study, the concentration of components and ozone was measured as a function of specific energy. It was shown that unsaturated compounds are removed from the air with an efficiency that is an order of magnitude better than that of conventional aromatic compounds due to their reaction with ozone. An algorithm was proposed for classifying components based on their significantly different reactivity parameters relative to plasma components. Based on formal kinetics methods, a method was developed for determining the reactivity of components with significantly different parameters. The relative reactivity of aromatic components has been determined: toluene, ethylbenzene, isopropyl-benzene: 1.0 : 1.15 : 1.2 and unsaturated components: styrene, α-methyl-styrene: 1.0 : 1.6. At the same time, the reactivity ratio styrene/toluene exceeds the value of 10. The proposed method can be used to study the purification of air from multicomponent mixtures with different functional composition, which are usually pyrolysis products of various plastics and elastomers.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1695 - 1702"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962048","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
Optimization of the High Energy Switches for Synchronization of Multiple Plasma Focus Devices 用于多等离子体聚焦器件同步的高能开关的优化
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701807
Umair Sarwar, Kameel Arshad,  Aman-ur-Rehman, Muhammad Farrukh Zia
{"title":"Optimization of the High Energy Switches for Synchronization of Multiple Plasma Focus Devices","authors":"Umair Sarwar,&nbsp;Kameel Arshad,&nbsp; Aman-ur-Rehman,&nbsp;Muhammad Farrukh Zia","doi":"10.1134/S1062873826701807","DOIUrl":"10.1134/S1062873826701807","url":null,"abstract":"<p>Dense Plasma Focus (DPF) devices have been synchronized by optimizing the parameters of high energy spark-gap switches and triggering mechanism. DPF is an intensive source of radiation with large number of applications in plasma physics and material engineering. A three electrode trigatron type spark-gap (controlled switch) is chosen for optimization to achieve the jitter that would be less than radiation emission time of DPF devices. A comparative study of static breakdown voltage (SBV) of spark-gap switch has been done for various gases, e.g., Ar, N<sub>2</sub>, SF<sub>6</sub>, and NArO (a mixture of O<sub>2</sub>, Ar, and N<sub>2</sub>). Experimental data shows that SBV is directly proportional to pressure for a fix gap between the two electrodes of spark-gap switch. SF<sub>6</sub> has the highest while Ar has the lowest SBV. The SBV of NArO and N<sub>2</sub> are almost equal because NArO has N<sub>2</sub> as its major component. NArO is found to be the most appropriate gas as it improves the recovery rate due to O<sub>2</sub> content in NArO mixture for repetitive operation of DPF. A circuit is set up to trigger two identical spark-gaps filled with NArO. Two different trigger schemes, a pulse transformer and a two stage Marx bank are used. Marx bank, due to its superior pulse characteristics, successfully triggered both the spark-gaps for all shots. The average jitter of two DPF devices is 26 ns with a standard deviation of 11 ns for multiple shots without any misfire.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1764 - 1773"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962092","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
Study of Oxidation Processes of Cobalt Thin Films by Ferromagnetic Resonance Spectroscopy and Magnetometry 钴薄膜氧化过程的铁磁共振光谱和磁强计研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701467
D. A. Arbuzov, N. N. Garif’yanov, A. A. Validov, A. A. Kamashev, I. A. Garifullin
{"title":"Study of Oxidation Processes of Cobalt Thin Films by Ferromagnetic Resonance Spectroscopy and Magnetometry","authors":"D. A. Arbuzov,&nbsp;N. N. Garif’yanov,&nbsp;A. A. Validov,&nbsp;A. A. Kamashev,&nbsp;I. A. Garifullin","doi":"10.1134/S1062873826701467","DOIUrl":"10.1134/S1062873826701467","url":null,"abstract":"<p>The oxidation of Co films on MgO was investigated. A short annealing formed a 1-nm oxide layer; a long one (90 min) led to complete oxidation. In the CoO<sub><i>x</i></sub>/Py structures, an exchange bias of 2.5 kOe was detected. It was shown that the initial thickness of the Co layer is the main parameter determining the uniformity of the magnetic state. The results are important for obtaining antiferromagnetic cobalt oxide with the desired properties.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1507 - 1514"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962002","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
A New Approach to Obtaining Optimal Parameters of Magnetic Fields and Periodic Modulation of a Constant Magnetic Field from Solutions of Bloch Equations 从Bloch方程解求磁场最优参数和恒磁场周期调制的新方法
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701480
V. V. Davydov, R. V. Davydov, V. I. Dudkin, A. A. Gol’dberg, S. A. Klimova
{"title":"A New Approach to Obtaining Optimal Parameters of Magnetic Fields and Periodic Modulation of a Constant Magnetic Field from Solutions of Bloch Equations","authors":"V. V. Davydov,&nbsp;R. V. Davydov,&nbsp;V. I. Dudkin,&nbsp;A. A. Gol’dberg,&nbsp;S. A. Klimova","doi":"10.1134/S1062873826701480","DOIUrl":"10.1134/S1062873826701480","url":null,"abstract":"<p>A new approach to the analysis of the Bloch equations is proposed, in which the features of NMR signal registration are considered using time-dependent coefficients. New relationships have been obtained, and the relative errors in determining the time of the first peak of the NMR signal and its amplitude have been calculated. These relationships make it possible to reduce the time required to find the optimal values of magnetic field parameters and modulation frequencies.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1521 - 1530"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962003","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
Hyperfine Structure of EPR Spectra of 53Cr Impurity Ions in Synthetic Forsterite Mg2SiO4 合成Forsterite Mg2SiO4中53Cr杂质离子EPR谱的超精细结构
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701388
A. A. Sukhanov, V. F. Tarasov, Ya. S. Didenko, K. A. Subbotin, E. V. Zharikov
{"title":"Hyperfine Structure of EPR Spectra of 53Cr Impurity Ions in Synthetic Forsterite Mg2SiO4","authors":"A. A. Sukhanov,&nbsp;V. F. Tarasov,&nbsp;Ya. S. Didenko,&nbsp;K. A. Subbotin,&nbsp;E. V. Zharikov","doi":"10.1134/S1062873826701388","DOIUrl":"10.1134/S1062873826701388","url":null,"abstract":"<p>Paramagnetic centers formed by isotopically pure <sup>53</sup>Cr impurity ions in synthetic forsterite (Mg<sub>2</sub>SiO<sub>4</sub>) were studied by continuous wave electron paramagnetic resonance spectroscopy. The chromium ions were shown to replace magnesium ions in the M1 and M2 crystallographic sites of the forsterite crystal lattice in the form of single Cr<sup>3+</sup> and Cr<sup>2+</sup> ions and as a dimer associate formed by two closely spaced Cr<sup>3+</sup> ions connected by an exchange interaction. The parameters of the hyperfine interaction between the electron and nuclear spins were determined for single ions.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1451 - 1457"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962011","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
EPR Study of Relaxation Processes of E' Centers in Optical Fibers with a Pure Quartz Core 纯石英芯光纤E′中心弛豫过程的EPR研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S106287382670142X
L. V. Nikiforov, D. S. Dmitrieva, V. V. Davydov
{"title":"EPR Study of Relaxation Processes of E' Centers in Optical Fibers with a Pure Quartz Core","authors":"L. V. Nikiforov,&nbsp;D. S. Dmitrieva,&nbsp;V. V. Davydov","doi":"10.1134/S106287382670142X","DOIUrl":"10.1134/S106287382670142X","url":null,"abstract":"<p>To study the relaxation processes of E' centers in optical fibers, samples were prepared and exposed to γ-radiation. Electron paramagnetic resonance spectra were analyzed. A formula for estimating the recovery time of the optical properties of the fibers was proposed, and recommendations for increasing their resistance to γ-radiation were provided.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1477 - 1483"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962018","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
Adhesion of Yttria-Stabilized Zirconia Coatings Deposited on Substrates from a Beam Plasma by Electron-Beam Deposition in Fore-Vacuum at Different Temperature 前真空下不同温度下电子束等离子体沉积钇稳定氧化锆涂层在基底上的附着力
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701698
A. V. Tyunkov, A. A. Andronov, Yu. G. Yushkov, S. A. Salnikov, D. B. Zolotukhin
{"title":"Adhesion of Yttria-Stabilized Zirconia Coatings Deposited on Substrates from a Beam Plasma by Electron-Beam Deposition in Fore-Vacuum at Different Temperature","authors":"A. V. Tyunkov,&nbsp;A. A. Andronov,&nbsp;Yu. G. Yushkov,&nbsp;S. A. Salnikov,&nbsp;D. B. Zolotukhin","doi":"10.1134/S1062873826701698","DOIUrl":"10.1134/S1062873826701698","url":null,"abstract":"<p>We presented the results of a study of the substrate temperature effect on the adhesion properties of yttria-stabilized zirconia (YSZ) coatings deposited using a forevacuum plasma-cathode electron source. The adhesion strength parameters were tested with a Revetest RST Macro Scratch tester using the scratch technique. Tests were conducted gradually increasing the load from 0.5 to 100 N at a rate of 2 mm/min and a length of 3–5 mm. The value of the critical load was used to determine the adhesion strength in the coating-substrate system by measuring the applied normal load, the indenter penetration depth, acoustic emission, and the coefficient of friction. Scanning electron microscopy was employed to visualize the indenter track and coating failure. The composition of coatings and chipped area were analysed using the energy-dispersive method. It has been established that the upper value of the critical load significantly increases from 5 to 81 N as the substrate temperature increases from 197to 1050°C.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1686 - 1694"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962033","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
Switching Characteristics of Spark Discharges in Static Breakdown Mode at Pressures of 20–140 atm 20-140大气压下静态击穿模式下火花放电的开关特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701558
B. A. Kozlov, D. S. Makhanko
{"title":"Switching Characteristics of Spark Discharges in Static Breakdown Mode at Pressures of 20–140 atm","authors":"B. A. Kozlov,&nbsp;D. S. Makhanko","doi":"10.1134/S1062873826701558","DOIUrl":"10.1134/S1062873826701558","url":null,"abstract":"<p>Calculated dependences of switching times in hydrogen were obtained in a previously unstudied pressure range of 20–140 atm under static breakdown conditions. The calculations were based on theoretical models best developed for the pressure range from one to several atmospheres, primarily for atmospheric air as the switching medium and voltages exceeding the static breakdown voltage. A general tendency for switching times to decrease with increasing pressure was established. Experimentally measured switching times in RO-48 type spark gap sharpeners (breakdown voltage 150 ± 2 kV, hydrogen pressure 55–58 atm, interelectrode gap 0.3 cm) have values in the range of 230–250 ps at a level of 0.1–0.9 of the breakdown voltage.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1584 - 1590"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962144","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 Compression and Burning Processes in Multilayer Magneto-Inertial Fusion Targets under the Influence of Laser and Broadband Radiation 激光和宽带辐射影响下多层磁惯性聚变靶压缩燃烧过程的研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701522
V. V. Kuzenov, S. V. Ryzhkov, A. G. Polyanskiy
{"title":"Investigation of Compression and Burning Processes in Multilayer Magneto-Inertial Fusion Targets under the Influence of Laser and Broadband Radiation","authors":"V. V. Kuzenov,&nbsp;S. V. Ryzhkov,&nbsp;A. G. Polyanskiy","doi":"10.1134/S1062873826701522","DOIUrl":"10.1134/S1062873826701522","url":null,"abstract":"<p>The paper is devoted to the computational and theoretical study of compression and energy release processes in a pulsed neutron source. Some results of calculations of the effect of intense energy fluxes (broadband and laser radiation) on a multilayer cylindrical target of a neutron source are presented. The main gas-dynamic and radiative parameters of the compressed plasma of a multilayer target are found.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1556 - 1566"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962185","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
Electron Paramagnetic Resonance Method: Methemoglobin in Blood of Patients with Undifferentiated Connective Tissue Dyplasia 电子顺磁共振法测定未分化结缔组织发育不良患者血液中高铁血红蛋白
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701455
M. I. Ibragimova, A. I. Chushnikov, I. V. Yatsyk, D. Kh. Khaibullina, G. G. Gumarov
{"title":"Electron Paramagnetic Resonance Method: Methemoglobin in Blood of Patients with Undifferentiated Connective Tissue Dyplasia","authors":"M. I. Ibragimova,&nbsp;A. I. Chushnikov,&nbsp;I. V. Yatsyk,&nbsp;D. Kh. Khaibullina,&nbsp;G. G. Gumarov","doi":"10.1134/S1062873826701455","DOIUrl":"10.1134/S1062873826701455","url":null,"abstract":"<p>Blood samples from patients with undifferentiated connective tissue dysplasia (UCTD) associated with back pain were analyzed using X-band EPR at temperatures ranging from 5 to 80 K. It was found that even moderate UCTD exhibits elevated methemoglobin and erythrocyte catalase concentrations. In severe UCTD, high methemoglobin concentrations and low transferrin levels are detected in the blood. As a result of computer modeling, it was established that the EPR spectra of blood samples from patients with UCTD and volunteers (control) are described by the same set of parameters, differing mainly only in the intensities of the components.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1500 - 1506"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962012","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
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