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TEMPORAL EVOLUTION OF THE PLASMA DENSITY CAVITY CAUSED BY INHOMOGENEOUS STOCHASTIC ELECTRIC FIELDS 非均匀随机电场引起的等离子体密度腔的时间演化
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-021
N. Azarenkov, D. Chibisov, O. Chibisov
{"title":"TEMPORAL EVOLUTION OF THE PLASMA DENSITY CAVITY CAUSED BY INHOMOGENEOUS STOCHASTIC ELECTRIC FIELDS","authors":"N. Azarenkov, D. Chibisov, O. Chibisov","doi":"10.46813/2023-146-021","DOIUrl":"https://doi.org/10.46813/2023-146-021","url":null,"abstract":"The time evolution of the formation of a plasma density cavity caused by inhomogeneous stochastic electric fields is investigated. The Fokker-Planck equation, which governs the temporal evolution of the plasma electron density due to localized stochastic inhomogeneous electric fields in the frequency range of lower hybrid oscillations,\u0000is solved numerically. The spatial dependence of the plasma electron density for various times is obtained.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"16 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79775594","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
EFFECT OF PLASMA CHEMICAL OXIDATION OF ETHYLENE IMPURITIES ON THE EFFICIENCY OF KIWIFRUIT STORAGE 等离子体化学氧化乙烯杂质对猕猴桃贮藏效率的影响
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-155
M. Yegorov, G. Taran, O.O. Zamuriev, P. Opalev
{"title":"EFFECT OF PLASMA CHEMICAL OXIDATION OF ETHYLENE IMPURITIES ON THE EFFICIENCY OF KIWIFRUIT STORAGE","authors":"M. Yegorov, G. Taran, O.O. Zamuriev, P. Opalev","doi":"10.46813/2023-146-155","DOIUrl":"https://doi.org/10.46813/2023-146-155","url":null,"abstract":"The effectiveness of plasma chemical technology in reducing the concentration of ethylene impurities in order to extend the shelf life of kiwifruit has been studied. Ethylene and mold were controlled by plasma treatment, which slowed the ripening of kiwifruit and significantly inhibited rotting. When storing kiwifruit using the plasma chemical system, the level of ethylene was twice lower than that measured in the control batch. Also, the level of ethylene practically did not change during the entire period of the experiment, since the ethylene released from the fruit was quickly oxidized by ozone. Air treatment of kiwifruit storage environment resulted in the fact that ripening mechanism was delayed and the loss of fruits during their further transportation and storage was almost completely prevented. Thus, high efficiency of plasma-chemical method for extending kiwifruit shelf life was shown as well as the prospects of its application. Storage period can be doubled while preserving the subtle aroma of fruits. The effectiveness of plasma chemical technology in reducing the concentration of ethylene impurities in order to extend the shelf life of kiwifruit has been studied. High efficiency of plasma-chemical method for extending kiwifruit shelf life was shown as well as the prospects of its application. Storage period can be doubled while preserving the subtle aroma of fruits.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"49 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80538489","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
COSMIC RAY SOURCE AND SOLAR ENERGETIC PARTICLES 宇宙射线源和太阳高能粒子
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-109
M. Cassé, V. Maslov
{"title":"COSMIC RAY SOURCE AND SOLAR ENERGETIC PARTICLES","authors":"M. Cassé, V. Maslov","doi":"10.46813/2023-146-109","DOIUrl":"https://doi.org/10.46813/2023-146-109","url":null,"abstract":"The acceleration of particles to the high energy is one of the key issues of solar physics, cis-lunar irradiations, astrophysics, and astroparticle physics. With the development of space astronomy, people started to realize that plasma disturbances in solar flares, Earth’s magnetosphere, and interplanetary space can also produce a large population of non-thermal particles. Cosmic ray promotion i.e. selective energization of matter in the cosmos requires, as on earth, three distinct stages: ionization, injection and acceleration to high energy. Supernova remnants and stellar winds of massive stars grouped in associations appear to be excellent celestial accelerators or re-accelerators through the shock waves they induce in their superbubbles. The injection of ions seems devoted to stars, except the smaller ones. In cosmic several mechanisms lead charged particle acceleration. Electrons are accelerated in direction of Earth’s poles by long train of electric double layers of small amplitudes. Charged particles are accelerated by the pondermotive force of electromagnetic radiation. Also, in a nonequilibrium current plasma or a plasma with particle flows, a strong electric double layer can be formed, which accelerates charged particles to high energies. The reconnection of\u0000the magnetic field lines also leads to the acceleration of charged particles.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90026878","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
EFFECT OF ELECTRON COLLISIONS WITH RESIDUAL NEUTRAL GAS ON CHARACTERISTIC OSCILLATION FREQUENCIES IN SYSTEMS OF ELECTRON FLOWS WITH A VIRTUAL CATHODE 电子与残馀中性气体碰撞对虚阴极电子流系统特征振荡频率的影响
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-033
O. Manuilenko, V. Novikov, A. Pashchenko, I. Pashchenko, I. Shapoval, V. Yuferov
{"title":"EFFECT OF ELECTRON COLLISIONS WITH RESIDUAL NEUTRAL GAS ON CHARACTERISTIC OSCILLATION FREQUENCIES IN SYSTEMS OF ELECTRON FLOWS WITH A VIRTUAL CATHODE","authors":"O. Manuilenko, V. Novikov, A. Pashchenko, I. Pashchenko, I. Shapoval, V. Yuferov","doi":"10.46813/2023-146-033","DOIUrl":"https://doi.org/10.46813/2023-146-033","url":null,"abstract":"A system of the hydrodynamic equations describing the electron flows in a diode with a virtual cathode is considered. Collisions are considered by introducing the corresponding braking force into the equations of motion. The stationary states of the electron flows are described. In a linear approximation, formulas are obtained for the frequencies of electron oscillations in a diode with a virtual cathode, considering the effective frequency of electron collisions. The expression for the decrement of oscillations due to the presence of collisions is obtained.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"123 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85661924","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
PENNING-TYPE H– ION SOURCE WITH METAL HYDRIDE CATHODE IN PULSATING REGIME 脉动状态下金属氢化物阴极彭宁型氢离子源
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-126
I. Sereda, Ya. O. Hrechko, N. Azarenkov
{"title":"PENNING-TYPE H– ION SOURCE WITH METAL HYDRIDE CATHODE IN PULSATING REGIME","authors":"I. Sereda, Ya. O. Hrechko, N. Azarenkov","doi":"10.46813/2023-146-126","DOIUrl":"https://doi.org/10.46813/2023-146-126","url":null,"abstract":"The features of H– ion emission from gas-feed-free Penning-type ion source with metal hydride cathode have been studied in pulsating regime. The metal hydride cathode provided local injection of hydrogen in activated state and impacts on Penning discharge ability to emit H– ions in the longitudinal direction. For stimulation of pre-excited\u0000hydrogen desorption from metal hydride the voltage pulse (4.5 kV, τ ≈ 15 µs) was performed against the background constant voltage of 6 kV on the anode of the discharge. The H– ion current of about 0.2 mA was obtained.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"56 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79143626","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
THE PHYSICO-TOPOLOGICAL SIMULATION OF A TRANSMISSION X-RAY TUBE WITH INDUCTION HEATING OF THE CATHODE 阴极感应加热的透射x射线管的物理拓扑模拟
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-190
S. O. Maikut, A. I. Kuzmichev, L. Tsybulsky, N. Shynkarenko
{"title":"THE PHYSICO-TOPOLOGICAL SIMULATION OF A TRANSMISSION X-RAY TUBE WITH INDUCTION HEATING OF THE CATHODE","authors":"S. O. Maikut, A. I. Kuzmichev, L. Tsybulsky, N. Shynkarenko","doi":"10.46813/2023-146-190","DOIUrl":"https://doi.org/10.46813/2023-146-190","url":null,"abstract":"Physico-topological simulation of a transmission X-ray tube (TRT) with inductionally heated thermionic cathode is presented, taking into account physical properties of functional elements and their design. Modeling is based on physical fundamentals for vacuum electronics and electrodynamics using ComSol. The distributions of electromagnetic fields, currents, temperature, and trajectories of thermoelectrons were calculated. The analysis of electron trajectories made it possible to optimize TRT topology and design.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"14 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89800602","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
INFLUENCE OF THE ENERGY PARAMETERS OF THE PRIMARY CIRCUIT ON THE CURRENT CHARACTERISTICS OF THE DIN-2K ACCELERATOR 一次电路能量参数对din-2k加速器电流特性的影响
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-036
D. Vinnikov, V. Katrechko, O.M. Ozerov, V. Tkachev, S. Marchenko, V. Yuferov, O. Manuilenko
{"title":"INFLUENCE OF THE ENERGY PARAMETERS OF THE PRIMARY CIRCUIT ON THE CURRENT CHARACTERISTICS OF THE DIN-2K ACCELERATOR","authors":"D. Vinnikov, V. Katrechko, O.M. Ozerov, V. Tkachev, S. Marchenko, V. Yuferov, O. Manuilenko","doi":"10.46813/2023-146-036","DOIUrl":"https://doi.org/10.46813/2023-146-036","url":null,"abstract":"Optimal voltage values were established for plasma guns and the pulsed current generator providing maximum break current values. The current values were determined for the plasma jumper formation region. The optimal time delay between the triggering of the plasma guns and the pulsed current generator has been established. The beam\u0000current was measured in the region behind the vacuum diode and in the plasma jumper region. The ultimate current was determined for the available plant geometry.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"7 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84360231","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 THE FUNGICIDAL PROPERTIES OF OZONE TREATMENT, Ag AND Cu NANOPARTICLES AND THEIR COMBINED ACTION ON THE MODEL OF SANITARY SIGNIFICANT MOLD SAPROPHYTE ASPERGILLUS FLAVUS 臭氧处理、银纳米粒子和铜纳米粒子的杀菌性能及其对卫生意义重大的腐生黄曲霉模型的联合作用研究
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-151
G. Taran, B. Kadolin, M. O. Yaroshenko, B. T. Stegniĭ
{"title":"STUDY OF THE FUNGICIDAL PROPERTIES OF OZONE TREATMENT, Ag AND Cu NANOPARTICLES AND THEIR COMBINED ACTION ON THE MODEL OF SANITARY SIGNIFICANT MOLD SAPROPHYTE ASPERGILLUS FLAVUS","authors":"G. Taran, B. Kadolin, M. O. Yaroshenko, B. T. Stegniĭ","doi":"10.46813/2023-146-151","DOIUrl":"https://doi.org/10.46813/2023-146-151","url":null,"abstract":"A study was conducted to determine the fungicidal activity of a sanitary contaminant of feeds – representatives of the genus Aspergillus Mich. – species of Aspergillus flavus using the ozone treatment method, treatment with the composition of Ag and Cu nanoparticles and the combined effect of these methods. When studying the combined effect of ozone, NPAg and NPCu, it was found that at the concentration ratio of 100:100 μg/cm3, there was a fungicidal effect on museum strains of Aspergillus flavus test cultures, i.e., the combination with ozone enhanced the antifungal properties of nanocomplex.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"15 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88226396","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
EXCITATION OF DURABLE VHF OSCILLATIONS IN FERRITE-FILLED COAXIAL LINES 铁氧体填充同轴线路中VHF持久振荡的激发
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-008
I. Magda, V. Mukhin, V. Sinitsin, S. Karelin, O. Lebedenko, M. Volovenko, O. Rak
{"title":"EXCITATION OF DURABLE VHF OSCILLATIONS IN FERRITE-FILLED COAXIAL LINES","authors":"I. Magda, V. Mukhin, V. Sinitsin, S. Karelin, O. Lebedenko, M. Volovenko, O. Rak","doi":"10.46813/2023-146-008","DOIUrl":"https://doi.org/10.46813/2023-146-008","url":null,"abstract":"Effective methods are suggested for exciting gigahertz-range oscillations in coaxial lines that contain ferrite rings and isotropic material. Within the gyrotropic section, the primary pulsed waveform gets transformed from the TEM into a TM mode. Its further development is analyzed, following the results of real-life and numerical experiments. Special attention is paid to amplitude variations of the ТМ mode, owing to the nonlinear response of the ferrite.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"41 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87021541","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
STRUCTURES OF VORTEXES NEAR THE POLES OF PLANETS OF THE SOLAR SYSTEM 太阳系行星两极附近的涡旋结构
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-113
V. Maslov, M. Casse, O. Cheremnykh, A. Fomina, D. Grasso, R. Kholodov, O. Novak, R. Ovsiannikov
{"title":"STRUCTURES OF VORTEXES NEAR THE POLES OF PLANETS OF THE SOLAR SYSTEM","authors":"V. Maslov, M. Casse, O. Cheremnykh, A. Fomina, D. Grasso, R. Kholodov, O. Novak, R. Ovsiannikov","doi":"10.46813/2023-146-113","DOIUrl":"https://doi.org/10.46813/2023-146-113","url":null,"abstract":"In the vicinity of the poles of the planets of the solar system, ordered crystals of vortices and intermittency are observed. The formation of vortex structures in the vicinity of the poles of the planets of the solar system is investigated. The conditions for the formation of vortexes are considered. A nonlinear equation was found describing the vortex dynamics and structures were studied.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"44 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86758737","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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