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NUMERICAL SIMULATION OF REPRODUCTION OF THE DEVELOPMENT CONDITIONS OF THE NEXT TRICHEL PULSE IN NEGATIVE CORONA 负电晕下一个三头脉冲发展条件再现的数值模拟
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-134
V. Ostroushko
{"title":"NUMERICAL SIMULATION OF REPRODUCTION OF THE DEVELOPMENT CONDITIONS OF THE NEXT TRICHEL PULSE IN NEGATIVE CORONA","authors":"V. Ostroushko","doi":"10.46813/2023-146-134","DOIUrl":"https://doi.org/10.46813/2023-146-134","url":null,"abstract":"Numerical simulations of the negative corona at a constant applied voltage in the Trichel pulse mode are carried out for different contents of an electronegative gas component. The dependences of the total current peak value and the time interval between pulses on the values of the applied voltage and the content of electronegative components are obtained. The results are somewhat explained using simplified models.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"217 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79671823","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
MODELING THE INTERACTION OF JUPITER'S MAGNETOSPHERIC PLASMA IONS WITH SATELLITE 模拟木星磁层等离子体离子与卫星的相互作用
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-117
O. Khelemelia, A. Fomina, O. Novak, R. Kholodov
{"title":"MODELING THE INTERACTION OF JUPITER'S MAGNETOSPHERIC PLASMA IONS WITH SATELLITE","authors":"O. Khelemelia, A. Fomina, O. Novak, R. Kholodov","doi":"10.46813/2023-146-117","DOIUrl":"https://doi.org/10.46813/2023-146-117","url":null,"abstract":"Jupiter’s moons are constantly bombarded by ions produced by the giant planet’s plasma magnetosphere. The influence is considered as one of the main sources of the moons’ atmosphere and surface modification. This investigation is an attempt to explore the interaction of space ions with Ganymede’s magnetosphere. Computer simulations\u0000are performed using electromagnetic fields that are close to experimentally observed fields in previous Jupiter space missions.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"53 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81631919","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
MODERNIZATION OF THE HELIUM ION ACCELERATOR MICROWAVE POWER SUPPLY SYSTEM 氦离子加速器微波电源系统的现代化
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-088
N. Gaponenko, V. A. Soshenko, B. V. Zajtsev, V.G. Zhuravlyov
{"title":"MODERNIZATION OF THE HELIUM ION ACCELERATOR MICROWAVE POWER SUPPLY SYSTEM","authors":"N. Gaponenko, V. A. Soshenko, B. V. Zajtsev, V.G. Zhuravlyov","doi":"10.46813/2023-146-088","DOIUrl":"https://doi.org/10.46813/2023-146-088","url":null,"abstract":"The high-voltage rectifier modernization, which is part of helium accelerator (PSS-4) high-frequency system, is described. The rectifier supplies the pulse modulator with direct current energy. The valves of the modulator used are mercury thyratrons. Modernization involves replacing thyratrons with semiconductor diodes. In the article, a comparative analysis of the parameters of thyratrons and diodes, which are supposed to be replaced by thyratrons, is carried out, and the expediency of such a replacement is substantiated.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"108 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79981933","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
FEATURES OF NEW CYCLOTRON RESONANCES, AS WELL AS CONDITIONS FOR RESONANT ACCELERATION OF CHARGED PARTICLES IN A VACUUM WITHOUT A MAGNETIC FIELD 新的回旋加速器共振的特点，以及在没有磁场的真空中带电粒子共振加速的条件
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-003
V. Buts, A. Zagorodny
{"title":"FEATURES OF NEW CYCLOTRON RESONANCES, AS WELL AS CONDITIONS FOR RESONANT ACCELERATION OF CHARGED PARTICLES IN A VACUUM WITHOUT A MAGNETIC FIELD","authors":"V. Buts, A. Zagorodny","doi":"10.46813/2023-146-003","DOIUrl":"https://doi.org/10.46813/2023-146-003","url":null,"abstract":"It is shown that the known conditions for cyclotron resonances are strictly valid only under autoresonance conditions or in the nonrelativistic case. In other cases, it is necessary to use the conditions established in the present work. The main features of charged particle dynamics under new resonant conditions are presented. Conditions are found for\u0000infinite acceleration of electrons by a transverse electromagnetic wave in a vacuum without a magnetic field.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"17 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78201635","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
ELABORATION OF THE PLASMA-DIELECTRIC WAKEFIELD ACCELERATOR WITH A PROFILED SEQUENCE OF DRIVER ELECTRON BUNCHES 等离子体-介电韦克菲尔德加速器驱动电子束序列的细化
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-053
I. Onishchenko, K. Galaydych, R. Kniaziev, G.O. Krivonosov, A. Linnik, P. Markov, O. L. Omelayenko, V. I. Pristupa, G. Sotnikov, V. Us, D.Yu. Zaleskiy
{"title":"ELABORATION OF THE PLASMA-DIELECTRIC WAKEFIELD ACCELERATOR WITH A PROFILED SEQUENCE OF DRIVER ELECTRON BUNCHES","authors":"I. Onishchenko, K. Galaydych, R. Kniaziev, G.O. Krivonosov, A. Linnik, P. Markov, O. L. Omelayenko, V. I. Pristupa, G. Sotnikov, V. Us, D.Yu. Zaleskiy","doi":"10.46813/2023-146-053","DOIUrl":"https://doi.org/10.46813/2023-146-053","url":null,"abstract":"A theoretical and experimental study of wakefield excitation by a profiled sequence of relativistic electron bunches in the plasma-dielectric structure, the parameters of which provide the conditions for the excitation of a small decelerating field for all driver bunches with simultaneous growth with the number of bunches of the accelerating total wakefield was carried out. Theoretically, the transformation ratio was found for the parameters of the experiment as the ratio of the total wakefield of the sequence to the field that decelerates driver bunches. In the performed experiments, the total wakefield was measured by the microwave probe. The magnitude of the decelerating field is determined by the shift of the maximum of the spectrum measured by the magnetic analyzer before and after wakefield excitation in the structure. The obtained transformation ratio increases with the number of bunches in the sequence and significantly exceeds this one for a nonprofiled sequence.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"26 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84513768","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
FREQUENCY OF PARAMETRIC X-RAY RADIATION 参数x射线辐射的频率
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-085
A. V. Shchagin, G. Kube
{"title":"FREQUENCY OF PARAMETRIC X-RAY RADIATION","authors":"A. V. Shchagin, G. Kube","doi":"10.46813/2023-146-085","DOIUrl":"https://doi.org/10.46813/2023-146-085","url":null,"abstract":"The exact solution of the equation for the frequency of parametric X-ray radiation (PXR) of relativistic charged particles moving in a crystal is obtained and compared to the approximate solution. It is found that the exact solution is in good agreement with the approximate one and that the approximate PXR frequency solution is practically correct for a comparison to experimental data.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"34 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73644480","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 METHOD FOR MAINTAINING THE ACCELERATION RATE AND INCREASING THE ENERGY OF SELF-INJECTED BUNCH DUE TO THE USE OF INHOMOGENEOUS PLASMA 一种利用非均匀等离子体维持自注入束的加速速率并增加其能量的方法
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-067
D. Bondar, V. Maslov, I. Onishchenko
{"title":"A METHOD FOR MAINTAINING THE ACCELERATION RATE AND INCREASING THE ENERGY OF SELF-INJECTED BUNCH DUE TO THE USE OF INHOMOGENEOUS PLASMA","authors":"D. Bondar, V. Maslov, I. Onishchenko","doi":"10.46813/2023-146-067","DOIUrl":"https://doi.org/10.46813/2023-146-067","url":null,"abstract":"The paper considers the process of excitation of a wakefield in a plasma by a laser pulse. The plasma density corresponds to the density of free electrons in the metal. A method is demonstrated for keeping self-injected bunch in the accelerating phase of the wakefield as laser pulse and bunch move in plasma with an increasing density gradient. Thus, the rate of acceleration of self-injected bunch is maintained and enhanced.","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":"75222334","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
TiO2-2 RADIATING DAMAGES AS A RESULT OF THE IRRADIATION HELIUM IONS WITH ENERGIES OF 0.12 AND 4 MeV ON THE LINEAR ACCELERATOR 摘要在直线加速器上辐照能量分别为0.12 MeV和4 MeV的氦离子对TiO2-2产生辐射损伤
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-096
V. Butenko, A. Cenian, O. Dyachenko, O. Manuilenko, K. V. Pavlii, M. Sawczak, B. V. Zajtsev, V. Zhurba
{"title":"TiO2-2 RADIATING DAMAGES AS A RESULT OF THE IRRADIATION HELIUM IONS WITH ENERGIES OF 0.12 AND 4 MeV ON THE LINEAR ACCELERATOR","authors":"V. Butenko, A. Cenian, O. Dyachenko, O. Manuilenko, K. V. Pavlii, M. Sawczak, B. V. Zajtsev, V. Zhurba","doi":"10.46813/2023-146-096","DOIUrl":"https://doi.org/10.46813/2023-146-096","url":null,"abstract":"On the linear accelerator of helium ions, the irradiation of TiO2-2 samples with ions energy of 0.12 and 4 MeV to doses of ≈ 1∙1018 ion/cm2 is executed. The elemental composition of TiO2-2 samples is made by roentgenfluorescence method. After irradiation a change of electrophysical characteristics is investigated, microscopic researches on electronic and optical microscopes are conducted. Numerical calculations of atom sputtering ratios taking into account of input angles of helium ions in a sample, and also phonons formation, atoms redistribution (segregation), appearance of the vacancies and displacements in TiO2-2 sample are made. Processes of the flaking formation are investigated, and also presence of the metallization effect and long-range interaction effect in the irradiated samples is shown","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"138 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77502129","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 SPATIAL DISTRIBUTION OF METAL VAPOURS ADMIXTURES IN THE PLASMA OF AN ELECTRIC ARC DISCHARGE 电弧放电等离子体中金属蒸气混合物空间分布的研究
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-139
A. Murmantsev
{"title":"INVESTIGATION OF SPATIAL DISTRIBUTION OF METAL VAPOURS ADMIXTURES IN THE PLASMA OF AN ELECTRIC ARC DISCHARGE","authors":"A. Murmantsev","doi":"10.46813/2023-146-139","DOIUrl":"https://doi.org/10.46813/2023-146-139","url":null,"abstract":"This work focuses on diagnosing the plasma in an electric arc discharge in an argon flow using optical emission spectroscopy. The method employed for determining the population of energy levels and the concentration of metal atoms based on the absolute values of emission intensity is described and validated. The experimental setup includes\u0000a spectrograph and an RGB CMOS matrix as the emission registration device. By obtaining the absolute values of the spectral radiances of Cu I lines and considering the axial symmetry of the electric arc discharge, the local radiation intensity of these lines is determined. Radial distributions of copper atom concentrations are then calculated\u0000using the absolute values of emission intensities and the radial distribution of the excitation temperature, which is determined using the Boltzmann plots technique. Two methods are employed for calculating the atom concentrations. The first method involves Boltzmann plots based on four spectral lines of Cu I and the corresponding excitation temperature. The second method determines the concentrations directly from the population of copper's energy levels, which are derived from the absolute values of emission intensity of the Cu I spectral lines. The results obtained from these two methods exhibit a coincidence of within 20%, supporting the recommendation of this technique for plasma diagnostics in electric arc discharges.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"69 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75051380","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
DRIFT-KINETIC EQUATIONS IN MAGNETIZED CURRENT-CARRYING PLASMAS 磁化载流等离子体中的漂移动力学方程
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-027
N. Grishanov, N. Azarenkov
{"title":"DRIFT-KINETIC EQUATIONS IN MAGNETIZED CURRENT-CARRYING PLASMAS","authors":"N. Grishanov, N. Azarenkov","doi":"10.46813/2023-146-027","DOIUrl":"https://doi.org/10.46813/2023-146-027","url":null,"abstract":"Kinetic models of magnetized current-carrying plasma have been developed to study the influence of magnetic drift effects on the wave-particle interactions in tokamaks and cylindrical plasma columns. The drift-kinetic equations are derived for the perturbed distribution functions of trapped and untrapped particles in a two-dimensional\u0000axisymmetric toroidal plasma, taking into account their bounce oscillations and the finite orbit-widths of their\u0000banana trajectories.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"4 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75960424","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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