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Problems of Atomic Science and Technology最新文献

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DEPOSITION OF TEXTURED CONDENSATES OF TUNGSTEN BY HYDROGEN REDUCTION OF ITS HEXAFLUORIDE 用氢还原钨的六氟化物沉积有织构的钨凝聚物
Problems of Atomic Science and Technology Pub Date : 2023-10-12 DOI: 10.46813/2023-147-143
B.M. Shirokov, O.Yu. Zhuravlyov, D.G. Malykhin
{"title":"DEPOSITION OF TEXTURED CONDENSATES OF TUNGSTEN BY HYDROGEN REDUCTION OF ITS HEXAFLUORIDE","authors":"B.M. Shirokov, O.Yu. Zhuravlyov, D.G. Malykhin","doi":"10.46813/2023-147-143","DOIUrl":"https://doi.org/10.46813/2023-147-143","url":null,"abstract":"In this work, a study of textured tungsten coatings deposited by the hydrogen reduction of tungsten hexafluoride was carried out. The formation of condensate is carried out by the natural selection of columnar grains growing perpendicular to the surface of deposition. Depending on the oversaturation of the gas phase above the growing solid one, some planes of the pyramids are subjected to a predominant growth rate, which leads to the formation of a texture. In the range of parameters studied, (100) and (111) tungsten textures are formed. The measured surface roughness is within the 5 class.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136013901","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
СRITERION METHOD FOR DETERMINING THE CONDITIONS FOR OCCURRENCE OF THERMOACOUSTIC INSTABILITY IN THE REACTOR CORE Сriterion用于确定反应堆堆芯发生热声不稳定的条件的方法
Problems of Atomic Science and Technology Pub Date : 2023-10-12 DOI: 10.46813/2023-147-084
V.A. Kondratuk, O.A. Dorozh, V.I. Filatov, T.V. Bibik
{"title":"СRITERION METHOD FOR DETERMINING THE CONDITIONS FOR OCCURRENCE OF THERMOACOUSTIC INSTABILITY IN THE REACTOR CORE","authors":"V.A. Kondratuk, O.A. Dorozh, V.I. Filatov, T.V. Bibik","doi":"10.46813/2023-147-084","DOIUrl":"https://doi.org/10.46813/2023-147-084","url":null,"abstract":"The subject of research is the thermoacoustic instability (TAI) of the coolant of a nuclear reactor core. The occurrence of TAI in the reactor core leads to high-frequency and high-amplitude cyclic loads on internal reactor structures and can be one of the reasons for the loss of tightness of fuel elements. A criterion method has been developed for determining the boundaries of the coolant TAI area in the nuclear reactor core under operating, transient and emergency modes. Based on the developed method, the occurrence of TAI area in the coolant was determined, with the criteria of TAI being formulated. A dimensionless determining criterion of the TAI area was justified depending on the rate of heat release, flow rate and enthalpy of the coolant at the entry to the reactor core. Applying the format of dimensionless parameters, the area of TAI of a water-cooled reactor core has been determined, with the relative power of the reactor being more than 0.25 and the relative flow rate of the coolant being less than 0.75.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136013911","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
PROPORTIONAL DETECTORS OF GAMMA-RADIATION BASED ON HIGH PURITY XENON GAS FOR RADIATION MONITORING 用于辐射监测的基于高纯度氙气的伽马辐射比例探测器
Problems of Atomic Science and Technology Pub Date : 2023-10-12 DOI: 10.46813/2023-147-146
S.A. Sokolov, A.V. Kosinov, A.O. Pudov, V.E. Kutny, A.V. Rybka, K.V. Kovtun, S.I. Melnikov, I.S. Timchenko, S.N. Olejnik
{"title":"PROPORTIONAL DETECTORS OF GAMMA-RADIATION BASED ON HIGH PURITY XENON GAS FOR RADIATION MONITORING","authors":"S.A. Sokolov, A.V. Kosinov, A.O. Pudov, V.E. Kutny, A.V. Rybka, K.V. Kovtun, S.I. Melnikov, I.S. Timchenko, S.N. Olejnik","doi":"10.46813/2023-147-146","DOIUrl":"https://doi.org/10.46813/2023-147-146","url":null,"abstract":"This article is dedicated to a detailed investigation of properties of a proportional counter based on the Xe+2%CH4 mixture. A setup for filling the detectors with high purity Xe gas and Xe-based gas mixtures was designed and made. An optimized design of the proportional counters was developed and investigated. The design parameters, such as the material and diameter of the anode, the number and material of the gas mixture inlets, composition and pressure of the gas were improved. The operating regimes of the proportional counters, as well as their thermal stability, were investigated.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136014040","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
WAKE EXCITATION OF PLASMA AND ELECTROMAGNETIC OSCILLATIONS BY A RELATIVISTIC ELECTRON BUNCH IN A PLASMA RESONATOR 等离子体谐振腔中相对论电子束对等离子体尾流的激发和电磁振荡
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-071
V. Balakirev, I. Onishchenko
{"title":"WAKE EXCITATION OF PLASMA AND ELECTROMAGNETIC OSCILLATIONS BY A RELATIVISTIC ELECTRON BUNCH IN A PLASMA RESONATOR","authors":"V. Balakirev, I. Onishchenko","doi":"10.46813/2023-146-071","DOIUrl":"https://doi.org/10.46813/2023-146-071","url":null,"abstract":"The process of the excitation of plasma and electromagnetic oscillations by a relativistic electron bunch in a plasma resonator is considered. It is shown that the potential electric field of plasma oscillations contains the field of a bulk wake plasma wave and the fields of two surface plasma oscillations. Surface plasma oscillations are localized in the vicinity of the input and output ends of the plasma resonator. In a plasma resonator, as a result of the effect of transition radiation at the ends of the resonator, the electron bunch will also excite eigen electromagnetic oscillations of the resonator. The spatio-temporal structure of the electromagnetic field of these oscillations has been studied.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81694965","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
INCLUDING THE OWN FIELDS OF QUANTUM EMITTERS IN DESCRIBING GENERATION REGIMES 在描述生成机制时包括量子发射体自身的场
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-049
V. Kuklin, E. Poklonskiy
{"title":"INCLUDING THE OWN FIELDS OF QUANTUM EMITTERS IN DESCRIBING GENERATION REGIMES","authors":"V. Kuklin, E. Poklonskiy","doi":"10.46813/2023-146-049","DOIUrl":"https://doi.org/10.46813/2023-146-049","url":null,"abstract":"The paper discusses three different modes of electromagnetic field generation by an ensemble of quantum emitters placed at the radiation wavelength in the one-dimensional case. The excitation of the resonator field is considered, which, as a rule, is determined by the geometry of the system, with and without taking into account the eigenfields of the emitters. The superradiance mode of the same ensemble of emitters is also analyzed. Since the main indicator of generation is the level of energy output from the system, the position of the maximum of this indicator determines the operating point of the device. Taking into account the intrinsic field of the emitters enhances the generation intensity and significantly changes the position of the operating point.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83568765","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
SIMPLE PULSE MICROWAVE WAVEGUIDE CALORIMETER WITH TEMPERATURE SENSOR LM 35 简单的脉冲微波波导量热计与温度传感器lm35
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-077
A. Linnik, D.Yu. Zalesky
{"title":"SIMPLE PULSE MICROWAVE WAVEGUIDE CALORIMETER WITH TEMPERATURE SENSOR LM 35","authors":"A. Linnik, D.Yu. Zalesky","doi":"10.46813/2023-146-077","DOIUrl":"https://doi.org/10.46813/2023-146-077","url":null,"abstract":"The paper presents the construction of a storage-type waveguide calorimeter designed to measure the energy of a sequence of short microwave pulses. The radiation is absorbed by water or ethanol, then the temperature increase is recorded by the LM 35 sensor. When using 14 cm3 of water, the energy measurement range is 3…88 J, and when using ethanol 1.3…40 J. The calorimeter is simple, cheap, and reliable.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78108412","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 DYNAMICS OF THE MICRODROPLET FRACTION OF METAL PLASMA IN PLASMA-OPTICAL DEVICES WITH FAST ELECTRONS 快电子等离子体光学器件中金属等离子体微滴分数的温度动力学
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-08-21 DOI: 10.46813/2023-146-164
A. Goncharov, I. Litovko, A. V. Ryabtsev
{"title":"TEMPERATURE DYNAMICS OF THE MICRODROPLET FRACTION OF METAL PLASMA IN PLASMA-OPTICAL DEVICES WITH FAST ELECTRONS","authors":"A. Goncharov, I. Litovko, A. V. Ryabtsev","doi":"10.46813/2023-146-164","DOIUrl":"https://doi.org/10.46813/2023-146-164","url":null,"abstract":"The computer simulation of a plasma filter with fast electrons shows that the main source of droplet heating is thermal electrons, while the role of fast electrons is reduced mainly to transferring energy to slow electrons. The processes of drop charging in the presence of an electron beam and the effective emission of electrons due are also considered.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88699332","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
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":null,"pages":null},"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
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":null,"pages":null},"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
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":null,"pages":null},"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
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