SIBERIAN JOURNAL OF PHYSICS最新文献_第4页

Vacuum System of the LINAC-200 Accelerator LINAC-200 加速器的真空系统

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-04-09 DOI: 10.25205/2541-9447-2023-18-4-28-35

D. S. Shokin, A. V. Trifonov, V. Kobets, D. L. Demin, A. E. Brukva, V. Shabratov, A. V. Skrypnik

引用次数: 0

Near-Field Photoluminescence of WS2 и MoS2 Monolayers, Grown by Chemical Vapor Deposition 通过化学气相沉积法生长的 WS2 и MoS2 单层的近场光致发光

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-04-08 DOI: 10.25205/2541-9447-2023-18-4-94-103

I. Milekhin, N. N. Kurus, L. Basalaeva, A. G. Milekhin, E. O. Chiglincev, A. Chernov, A. Latyshev

引用次数: 0

Research of Quadrupole Lenses for Ions Transport Channel 离子传输通道的四极透镜研究

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-04-08 DOI: 10.25205/2541-9447-2023-18-4-5-19

S. A. Bykov, V. A. Vostrikov, K. V. Zhilyaev, I. I. Morozov, I. Okunev, A. Y. Pakhomov

引用次数: 0

Derivation of the non-stationary Schrödinger equation from the stationary one 从静态薛定谔方程推导出非静态薛定谔方程

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-104-112

N. A. Vinokurov

引用次数: 0

Mechanism of Beam-Plasma Discharge Development in the Gas Dynamic Trap 气体动力陷阱中光束-等离子体放电的发展机理

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-43-60

V. Glinskiy, Е. Р. Volchok, V. Annenkov, I. Timofeev

{"title":"Mechanism of Beam-Plasma Discharge Development in the Gas Dynamic Trap","authors":"V. Glinskiy, Е. Р. Volchok, V. Annenkov, I. Timofeev","doi":"10.25205/2541-9447-2023-18-3-43-60","DOIUrl":"https://doi.org/10.25205/2541-9447-2023-18-3-43-60","url":null,"abstract":"The work studies how a plasma discharge in the Gas Dynamic Trap (GDT) is ignited in a volume significantly exceeding the volume of the injected electron beam. This property of a beam-plasma discharge makes it attractive to use relatively low-power electron beams to create starting plasma in open traps with parameters sufficient for its further effective heating by the neutral injection. Despite the fact that effective ionization of plasma far beyond the electron beam in open traps has been observed experimentally for more than 60 years, the detailed mechanism of this phenomenon is still not clear. Particularly many questions arise in regimes that are implemented in such large fusion facilities as GDT, where the relaxation length of the beam turns out to be significantly less than the length of the trap, and the turbulence excited by the beam is localized near the entrance magnetic mirror. Based on recent experiments [E.I. Soldatkina et al. Nucl. Fusion 62, 066034 (2022)], we have proposed a scenario for the development of a discharge in GDT, according to which a compact region of intense plasma turbulence first rapidly expands radially, ionizing the gas outside the beam tube in the vicinity of a magnetic mirror, and then a slower ionization process begins in the rest trap volume both due to the tail of suprathermal particles that are formed in the turbulence zone, and due to thermal electrons that receive energy from the pumping region via the longitudinal electron thermal conductivity. To assess how well this scenario explains the experimentally observed dynamics of plasma density growth in different parts of the facility, we carry out particle-in-cell simulations of the radial expansion of the turbulence zone and propose a simplified model of impact ionization in the entire volume of the trap by both thermal and suprathermal electrons.","PeriodicalId":509351,"journal":{"name":"SIBERIAN JOURNAL OF PHYSICS","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140441205","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

Electrical and Optical Switching in Vanadium Dioxide Nanostructures Decorated with Gold Nanoparticles 金纳米颗粒装饰的二氧化钒纳米结构中的电气和光学开关

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-71-82

S. Mutilin, А. Е. Gayduk, L. Yakovkina, А. I. Komonov, R. Soots, К. Е. Kapoguzov, S. Golod, V. Y. Prinz

{"title":"Electrical and Optical Switching in Vanadium Dioxide Nanostructures Decorated with Gold Nanoparticles","authors":"S. Mutilin, А. Е. Gayduk, L. Yakovkina, А. I. Komonov, R. Soots, К. Е. Kapoguzov, S. Golod, V. Y. Prinz","doi":"10.25205/2541-9447-2023-18-3-71-82","DOIUrl":"https://doi.org/10.25205/2541-9447-2023-18-3-71-82","url":null,"abstract":"The electrical parameters of the semiconductor-metal phase transition in vanadium dioxide nanostructures synthesized by chemical vapor deposition on a silicon substrate (100) and decorated with gold nanoparticles with a surface concentration from 3∙109 to 3∙1010 cm–2 are studied. X-ray phase analysis revealed that the synthesized nanostructures of vanadium dioxide contain a monoclinic M1 phase undergoing a phase transition at a temperature of about 68 °C. The morphology of the surface of vanadium dioxide nanostructures coated with gold nanoparticles was studied using a scanning electron microscope and an atomic force microscope. The characteristics of the temperature phase transition of the initial nanostructures and nanostructures decorated with gold nanoparticles are determined. The temperature dependence of the resistance near the phase transition point of the initial nanostructures showed that the resistance jump is about four orders of magnitude, which confirms their high quality. It is shown that an increase in the surface concentration of gold particles to a value of 3∙1010 cm–2 increases the conductivity of vanadium dioxide at room temperature by about two times, and shifts the phase transition temperature by 5 °C: from 68 °C to 63 °C. Optical switching in vanadium dioxide with an array of gold particles with a size of 9 nm is considered by numerical modeling methods. It is established that the response of the electromagnetic wave from the VO2 material during the phase transition is enhanced due to the excitation of localized plasmon resonance in gold nanoparticles and reaches a local maximum in the region of 600 nm. Additionally, this effect is enhanced at angles of incidence near the pseudo-Brewster angle for vanadium dioxide. The considered hybrid VO2–Au nanostructures are promising as basic nanoelements for next-generation computers, as well as for ultrafast and highly sensitive sensors.","PeriodicalId":509351,"journal":{"name":"SIBERIAN JOURNAL OF PHYSICS","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140439639","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

Obtaining Hydrogen by Thermocatalytic Decomposition of Methane Using a Catalyst ‘Nickel on Kieselgur’ 使用 "基瑟尔镍 "催化剂通过热催化分解甲烷获得氢气

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-95-103

Y. V. Zhelnov, V. Dolgikh, S. А. Ivanov, М. R. Vinogradova, N. V. Meleshko, I. V. Kudinov

引用次数: 0

Experiments to Improve the Efficiency of Obtaining Brass Nanoparticles by Evaporation by a Continuous Beam of High-Energy Electrons 通过连续高能电子束蒸发提高黄铜纳米粒子获取效率的实验

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-83-94

Е. C. Khartaeva, А. V. Nomoev, S. Bardakhanov, К. V. Zobov, D. Trufanov, V. Gaponenko, D. G. Tsydypov

{"title":"Experiments to Improve the Efficiency of Obtaining Brass Nanoparticles by Evaporation by a Continuous Beam of High-Energy Electrons","authors":"Е. C. Khartaeva, А. V. Nomoev, S. Bardakhanov, К. V. Zobov, D. Trufanov, V. Gaponenko, D. G. Tsydypov","doi":"10.25205/2541-9447-2023-18-3-83-94","DOIUrl":"https://doi.org/10.25205/2541-9447-2023-18-3-83-94","url":null,"abstract":"Composite, copper and zinc containing nanoparticles and brass nanoparticles have been obtained by a high-performance method of evaporation of substances by a relativistic electron beam. The change in the stoichiometry of nanopowders produced by stepwise irradiation of a brass ingot placed in a single-zone graphite crucible is considered. It was found that the production of such particles depends on the concentration of saturated vapors of zinc and copper. A two-zone configuration of the crucible has been developed, which makes it possible to realize the simultaneous evaporation of the constituent components, thereby providing the conditions for the formation of uniform brass nanoparticles with a uniform distribution of elements and a high yield of nanopowder. X-ray diffraction analysis (XRD), Transmission electron microscopy (TEM), Energy dispersive X-ray analysis (EDX) were carried out, and the specific surface of the obtained nanoparticles was determined. The mechanism of formation of composite nanoparticles is discussed.","PeriodicalId":509351,"journal":{"name":"SIBERIAN JOURNAL OF PHYSICS","volume":"27 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140441254","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

Temperature Dependence of the Specific Heat Capacity Glasses Produced Based on Na2B4O7 + Bi2O3 基于 Na2B4O7 + Bi2O3 生成的比热容玻璃的温度依赖性

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-61-70

D. Kuchakshoev, А. G. Dzhaborov, А. Kholov

引用次数: 0

The Use of Computer Mathematics Systems for Solving Some Problems of Thermodynamics and Statistical Physics 利用计算机数学系统解决热力学和统计物理学的若干问题

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-02-22 DOI: 10.25205/2541-9447-2023-18-3-113-128

Р. V. Pipich

引用次数: 0