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CROSS-SECTIONS OF PHOTONEUTRON REACTION natMo(γ,xn)93mMo AT THE BREMSSTRAHLUNG ENERGY UP TO 95 MeV 在高达 95 MeV 的闪烁光束能量下，natMo(γ,xn)93mMo 与光电子核反应的对映效应
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-015
I. S. Timchenko, O. S. Deiev, S. Olejnik, S.M. Potin, V. Kushnir, V. Mytrochenko, S. Perezhogin
{"title":"CROSS-SECTIONS OF PHOTONEUTRON REACTION natMo(γ,xn)93mMo AT THE BREMSSTRAHLUNG ENERGY UP TO 95 MeV","authors":"I. S. Timchenko, O. S. Deiev, S. Olejnik, S.M. Potin, V. Kushnir, V. Mytrochenko, S. Perezhogin","doi":"10.46813/2024-151-015","DOIUrl":"https://doi.org/10.46813/2024-151-015","url":null,"abstract":"The photoproduction of the 93mMo nucleus on natural molybdenum was studied using the electron beam of the LUE-40 linac RDC “Accelerator” NSC KIPT. Measurements were performed using the activation method and off-line γ-ray spectrometric technique. For the natMo(γ,xn)93mMo reaction the experimental flux-averaged cross-sectionϭ(Eγmax)m at the bremsstrahlung end-point energy range of 38…93 MeV was first time determined. The theoretical values of the yields Ym,g(Eγmax) and flux-averaged cross-sections(Eγmax)m,g for the natMo(γ,xn)93m,gMo reactions were calculated using the cross-sections ϭ(Eγ) from the TALYS1.96 code for different gamma strength functions and level density models. The comparison showed strong discrepancies between the experimental values and the theoretical results of (Eγmax)m.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"111 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361122","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 CLINICAL-BASED NEUTRON SOURCE FOR NUCLEAR MEDICINE AND NEUTRON-CAPTURE THERAPY APPLICATIONS 用于核医学和中子俘获治疗的临床中子源
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-124
V.Y. Kasilov, V. Tsyats'ko, Yu.G. Kazarinov, V.O. Grigorenko, S.G. Karpus, G.D. Kovalenko, S. Kochetov, E. Tsyats'ko
{"title":"A CLINICAL-BASED NEUTRON SOURCE FOR NUCLEAR MEDICINE AND NEUTRON-CAPTURE THERAPY APPLICATIONS","authors":"V.Y. Kasilov, V. Tsyats'ko, Yu.G. Kazarinov, V.O. Grigorenko, S.G. Karpus, G.D. Kovalenko, S. Kochetov, E. Tsyats'ko","doi":"10.46813/2024-151-124","DOIUrl":"https://doi.org/10.46813/2024-151-124","url":null,"abstract":"The most promising method for generating high-density neutron fluxes for BNCT and nuclear medicine using delayed fission neutrons has been proposed. Estimated fluxes densities of therapeutic neutrons of the order of 4.41013 n/(cm2∙s) for radiosurgery and 1.441011 n/(cm2∙s) for BNCT are presented, which significantly exceeds existing world analogues. Proposals for a design solution for a clinical-based neutron source device are presented. A study was conducted of the capabilities of NSC KIPT as a potential participant in the international center of nuclear medicine.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365183","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 AND ADJUSTMENT OF THE MICROWAVE POWER CONTROL SYSTEM OF THE “ALMAZ-2M” ACCELERATOR 阿尔马兹-2M "加速器微波功率控制系统的现代化改造和调整
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-073
D.Yu. Zaleskyi, V.I. Pristupa, V.S. Us, G.V. Sotnikov
{"title":"MODERNIZATION AND ADJUSTMENT OF THE MICROWAVE POWER CONTROL SYSTEM OF THE “ALMAZ-2M” ACCELERATOR","authors":"D.Yu. Zaleskyi, V.I. Pristupa, V.S. Us, G.V. Sotnikov","doi":"10.46813/2024-151-073","DOIUrl":"https://doi.org/10.46813/2024-151-073","url":null,"abstract":"The microwave power source of the “Almaz-2M” accelerator is controlled by supplying a microwave modulated pulse from the “Rubin” master microwave generator to the KIU-12M klystron. The “Rubin” frequency must be adjusted to the resonant frequency of the accelerator, which may change under the influence of external conditions and aging of the materials of the accelerator elements, so it is necessary to adjust the “Rubin” frequency. At the same time, the “Rubin” frequency meter –“wave meter” also needs calibration. This paper describes a method for calibrating a “wave meter” with an accuracy of 1.5 MHz. For experiments on wakefield acceleration of an electron beam using a profiled sequence of bunches, it is important to synchronize all elements of the accelerator - the gun, the master oscillator, the klystron. For this purpose, a standard accelerator launch system was carried out. This made it possible to obtain trigger pulses with a rise time of about 200 ns. Also, based on modern microcircuits, a new trigger system with a leading edge of less than 100 ns has been developed.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141366331","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
APPROACHES TO BUILDING A NETWORK OF AUTOMATED RADIATION MONITORING POSTS IN THE TERRITORY OF UKRAINE 在乌克兰境内建立辐射自动监测站网络的方法
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-142
S.V. Barbashev
{"title":"APPROACHES TO BUILDING A NETWORK OF AUTOMATED RADIATION MONITORING POSTS IN THE TERRITORY OF UKRAINE","authors":"S.V. Barbashev","doi":"10.46813/2024-151-142","DOIUrl":"https://doi.org/10.46813/2024-151-142","url":null,"abstract":"The article describes the conceptual approach to building a network of automated monitoring posts of the Integrated Automated Radiation Monitoring System of the environment in the territory of Ukraine. To solve this task, it is proposed to take as a basis the network of posts of existing object automated systems and the network of\u0000non-automated posts of radiation monitoring of atmospheric air of the Ukrainian Hydrometeorological Center, with further work on optimizing the number of posts of the Hydrometeorological Center and their automation, and then integrating all posts into one system. It is proposed to form an integrated network of observation posts taking into\u0000account the ecological and hygienic principle.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 92","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365219","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 ACOUSTIC PICTURE OF KLYSTRONS AND MODULATORS OF THE LU10 ACCELERATOR DURING RADIATION IRRADIATION OF A SUPERCRITICAL WATER LOOP 研究超临界水环辐射辐照期间 LU10 加速器的克利斯特伦子和调制器的声学图像
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-101
V. M. Boriskin, V. V. Churikov
{"title":"STUDY OF THE ACOUSTIC PICTURE OF KLYSTRONS AND MODULATORS OF THE LU10 ACCELERATOR DURING RADIATION IRRADIATION OF A SUPERCRITICAL WATER LOOP","authors":"V. M. Boriskin, V. V. Churikov","doi":"10.46813/2024-151-101","DOIUrl":"https://doi.org/10.46813/2024-151-101","url":null,"abstract":"Currently, there is an urgent problem of diagnosing the operation of klystrons and accelerator modulators for prompt response to possible emergency situations. According to the obtained data, the normal and emergency mode of operation of the equipment differ quite significantly in terms of the acoustic picture. Since there is a certain volume of acoustic information on the operation of the LU10 accelerator, a decision was made to investigate the cases of emergency and regular versions of the equipment operation.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"114 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141363069","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
DEVELOPMENT OF A RADIOMETER FOR MEASURING THE RADON CONCENTRATION IN THE AIR 开发测量空气中氡浓度的辐射计
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-040
G. Kovalenko, S. Karpus, I. Semisalov, O. Kapliy, V. Ovchinnik, M. Shulika, I. Shliakhov, V. Yalovenko
{"title":"DEVELOPMENT OF A RADIOMETER FOR MEASURING THE RADON CONCENTRATION IN THE AIR","authors":"G. Kovalenko, S. Karpus, I. Semisalov, O. Kapliy, V. Ovchinnik, M. Shulika, I. Shliakhov, V. Yalovenko","doi":"10.46813/2024-151-040","DOIUrl":"https://doi.org/10.46813/2024-151-040","url":null,"abstract":"The results of the development of an experimental sample of a radiometer for measuring the concentration of radon in the air are presented. The application of an air pumping system and a combination of four Si planar detector plates made it possible to increase the sensitivity of the radiometer, which significantly expands its possibilities for use in both open and closed air ventilation systems. The developed software allows to measure and analyze the spectra of alpha particles in real time and evaluate the radon content in the specified time.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360753","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
CONTENT OF ELEMENTS AND STRUCTURAL CHANGES IN NATURAL PYROPHYLLITE BY THE INFLUENCE OF GAMMA IRRADIATION 伽马辐照对天然辉绿岩元素含量和结构变化的影响
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-112
O.P. Bereznyak, N. Dikiy, I.V. Kolodiy, O.P. Medvedeva, D. Medvedev
{"title":"CONTENT OF ELEMENTS AND STRUCTURAL CHANGES IN NATURAL PYROPHYLLITE BY THE INFLUENCE OF GAMMA IRRADIATION","authors":"O.P. Bereznyak, N. Dikiy, I.V. Kolodiy, O.P. Medvedeva, D. Medvedev","doi":"10.46813/2024-151-112","DOIUrl":"https://doi.org/10.46813/2024-151-112","url":null,"abstract":"Сhanges in the structure of natural pyrophyllite by long-term irradiation of gamma rays with a low dose rate have been studied. A comparative analysis of the sequence and nature of structural changes in pyrophyllite by longterm irradiation of gamma rays and accelerated irradiation with electrons up to a dose of 3.6107 Gy was carried out.\u0000It has been established that irradiation by gamma quanta for 12 years, in contrast to an accelerated experiment on irradiation by high-energy electrons to the same dose within 48 h, does not lead to dehydroxylation or hydration of pyrophyllite and the impurity phases and elements contained in it, due to which the structure of pyrophyllite remains\u0000close to the original state.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364984","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
NEW METHOD OF OBTAINING ORGANIC POLYCRYSTALLINE SCINTILLATORS 获得有机多晶闪烁体的新方法
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-034
Yaroslava Polupan, N. Karavaeva, A. Krech, I. Lazarev, S.V. Makhota, E. Martynenko, S.S. Minenko, O.A. Tarasenko
{"title":"NEW METHOD OF OBTAINING ORGANIC POLYCRYSTALLINE SCINTILLATORS","authors":"Yaroslava Polupan, N. Karavaeva, A. Krech, I. Lazarev, S.V. Makhota, E. Martynenko, S.S. Minenko, O.A. Tarasenko","doi":"10.46813/2024-151-034","DOIUrl":"https://doi.org/10.46813/2024-151-034","url":null,"abstract":"One of the disadvantages of polycrystalline scintillators is a significant degradation of their scintillation and optical characteristics with an increase in thickness of a scintillator. This work proposes a new approach to obtaining the initial material for polycrystals based on p-terphenyl, in which zone melting and an additional stage of reverse movement allows producing material for pressing in the form of an ingot. This method of producing polycrystals provides a significant improvement in their scintillation and optical haracteristics in relation to existing analogues.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"105 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141362220","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
SEARCH FOR DARK MATTER CANDIDATE PRODUCED IN ASSOCIATION WITH A HIGGS BOSON AND TAU LEPTONS AT √s=14 TeV 在 √s=14 TeV 下寻找与希格斯玻色子和 TAU LEPTON 一起产生的暗物质候选物质
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-012
T. Obikhod, Evgenii Petrenko
{"title":"SEARCH FOR DARK MATTER CANDIDATE PRODUCED IN ASSOCIATION WITH A HIGGS BOSON AND TAU LEPTONS AT √s=14 TeV","authors":"T. Obikhod, Evgenii Petrenko","doi":"10.46813/2024-151-012","DOIUrl":"https://doi.org/10.46813/2024-151-012","url":null,"abstract":"A search for dark matter produced in association with a Higgs boson in final states with two 𝜏-leptons and missing transverse momentum, pp→A→ahτ+τ- is presented. The corresponding experimental analysis between 2015–2018 years used 139 fb−1 of proton–proton collision data at √s = 13 TeV collected by the ATLAS experiment at the LHC. The results are interpreted in terms of a 2HDM+a model with physics beyond the Standard Model featuring two scalar Higgs doublets and a pseudoscalar singlet field. Two sets of parameters, derived from experimental exclusion limits, for calculating the axions and bosons production cross sections were selected using the MADGRAPH5@NLO computer program. The obtained information, together with kinematic constraints on the transverse momentum and angular distribution of axions and bosons, allows us to conclude about the existence of CP-odd Higgs bosons with a mass in the region of 400 GeV and a dark matter candidate, the axion, with a mass of up to 200 GeV.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364755","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
RESEARCH OF PHYSICAL PROCESSES IN PERMANENT MAGNETS UNDER THE ACTION OF ELECTRONS, NEUTRONS, AND GAMMA QUANTUM 研究永磁体在电子、中子和伽马量子作用下的物理过程
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-045
V. Bovda, O. Bovda, I.S. Guk, V.M. Lyashchenko, A. Mytsykov, L. V. Onischenko
{"title":"RESEARCH OF PHYSICAL PROCESSES IN PERMANENT MAGNETS UNDER THE ACTION OF ELECTRONS, NEUTRONS, AND GAMMA QUANTUM","authors":"V. Bovda, O. Bovda, I.S. Guk, V.M. Lyashchenko, A. Mytsykov, L. V. Onischenko","doi":"10.46813/2024-151-045","DOIUrl":"https://doi.org/10.46813/2024-151-045","url":null,"abstract":"A review of works was conducted in which the interaction of electrons, neutrons and gamma quanta from the material of permanent magnets used in electron accelerators was studied. The main conclusions of the review indicate that in order to establish the mechanisms of demagnetization of alloys, it is necessary to carry out detailed studies of changes in the structure of materials after irradiation.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"120 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360767","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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