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HETEROSTRUCTURED SCINTILLATORS BASED ON ORGANIC SINGLE CRYSTAL GRAINS FOR A HIGH PULSE SHAPE DISCRIMINATION 基于有机单晶颗粒的异质结构闪烁体，可实现较高的脉冲形状辨别能力
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-028
A. Krech, I. Khromiuk, O. Tarasenko, N. Karavaeva, I. Lazarev, E. Martynenko, S.V. Makhota
{"title":"HETEROSTRUCTURED SCINTILLATORS BASED ON ORGANIC SINGLE CRYSTAL GRAINS FOR A HIGH PULSE SHAPE DISCRIMINATION","authors":"A. Krech, I. Khromiuk, O. Tarasenko, N. Karavaeva, I. Lazarev, E. Martynenko, S.V. Makhota","doi":"10.46813/2024-151-028","DOIUrl":"https://doi.org/10.46813/2024-151-028","url":null,"abstract":"This article is related to studying the properties and improving the characteristics of the new types of organic heterostructured scintillators as detectors of fast neutrons and short-range charged particles. This research is aimed to find the opportunities to improve the characteristics of the detector, based on a heterostructured scintillation material, and to expand the possibilities of its practical applications, in particular, for the tasks of separate detection of ionizing radiations of different types.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364847","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
PECULIARITIES OF RADIATION-INDUCED EFFECTS IN ZnO NANOPARTICLES 辐射对氧化锌纳米颗粒影响的微量性
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-105
N. Dikiy, O.P. Bereznyak, Y. Lyashko, O.P. Medvedeva, D. Medvedev
{"title":"PECULIARITIES OF RADIATION-INDUCED EFFECTS IN ZnO NANOPARTICLES","authors":"N. Dikiy, O.P. Bereznyak, Y. Lyashko, O.P. Medvedeva, D. Medvedev","doi":"10.46813/2024-151-105","DOIUrl":"https://doi.org/10.46813/2024-151-105","url":null,"abstract":"Gamma activation of ZnO nanoparticles was carried out using the method of developing the features of identifying their radiation-induced effects for further development in applied directions. The methods of gamma spectrometry, X-ray spectrometry, photoluminescence and IR spectroscopy were used. A higher concentration of\u0000sour vacancies on the surface of gamma-activated nano-ZnO was shown.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"118 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361630","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
SPATIAL RESOLUTION IMPROVEMENT OF THE NUCLEAR SCANNING MICROPROBE CHANNEL OF THE ANALYTICAL ACCELERATOR COMPLEX OF THE API NAS OF UKRAINE 提高乌克兰国家科学院分析加速器综合体核扫描微探针通道的空间分辨率
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-087
A.G. Ponomarev, V.I. Vozny, I.H. Ihnatiev, S. Kolinko, D. V. Magilin, V. Rebrov
{"title":"SPATIAL RESOLUTION IMPROVEMENT OF THE NUCLEAR SCANNING MICROPROBE CHANNEL OF THE ANALYTICAL ACCELERATOR COMPLEX OF THE API NAS OF UKRAINE","authors":"A.G. Ponomarev, V.I. Vozny, I.H. Ihnatiev, S. Kolinko, D. V. Magilin, V. Rebrov","doi":"10.46813/2024-151-087","DOIUrl":"https://doi.org/10.46813/2024-151-087","url":null,"abstract":"The probe-forming system of a nuclear scanning microprobe based on a quadruplet of magnetic quadrupole lenses with three independent power supplies has been studied. In the stigmatic focusing mode, the third power supply is a free parameter affecting the ion-optical properties of the microprobe. The optimal system was selected as\u0000a result of solving an optimization problem in which the figure of merit was the reduced collimated acceptance. The numerical simulation of the beam focusing process in that one-parametric system, taking into account the experimentally measured distribution of protons in the trajectory phase space, showed that the dimensions of the beam\u0000spot on the target can be reduced several times compared to the working system. At the same time, the current density in the focused spot increases by about one order.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 939","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364080","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
RADIATION IN THE MICROWAVE RANGE AT PULSE ACCELERATORS WITH VIRTUAL CATHODE GENERATOR 带虚拟阴极发生器的脉冲加速器的微波范围辐射
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-079
V. Katrechko, D. Vinnikov, O. Manuilenko, O.M. Ozerov, I.N. Onishchenko, V.I. Tkachev, V. Yuferov, S.V. Marchenko
{"title":"RADIATION IN THE MICROWAVE RANGE AT PULSE ACCELERATORS WITH VIRTUAL CATHODE GENERATOR","authors":"V. Katrechko, D. Vinnikov, O. Manuilenko, O.M. Ozerov, I.N. Onishchenko, V.I. Tkachev, V. Yuferov, S.V. Marchenko","doi":"10.46813/2024-151-079","DOIUrl":"https://doi.org/10.46813/2024-151-079","url":null,"abstract":"The energy and design parameters of some vircator systems are considered. Calculated cutoff frequencies for the main E and H modes of the DIN-2K accelerator waveguides with electron beam parameters: ~ 15 kA and ~ 185 kV. The characteristic frequencies of oscillations of the virtual cathode depending on the distance of the anode-cathode\u0000gap were calculated. Experimentally obtained amplitude-frequency spectra (up to 6 GHz) in the far zone of electromagnetic radiation (Fraunhofer zone) for a horn antenna.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141366537","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
ON WAKEFIELD ACCELERATION IN INHOMOGENEOUS PLASMA 非均质等离子体中的若飞加速问题
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-055
D. Bondar, V. Maslov, I.N. Onishchenko
{"title":"ON WAKEFIELD ACCELERATION IN INHOMOGENEOUS PLASMA","authors":"D. Bondar, V. Maslov, I.N. Onishchenko","doi":"10.46813/2024-151-055","DOIUrl":"https://doi.org/10.46813/2024-151-055","url":null,"abstract":"In laser-plasma wakefield acceleration, an actual and widely studied issue is the obtaining small self-injected bunches and enhancement of their energy and accelerating gradient by variation the parameters of laser pulses and\u0000plasma. In particular, using the special plasma profiles has a significant effect. Earlier it has been shown that with a longitudinal linearly increasing plasma density profile, due to compression of the wakefield bubble, synchronism of the maximum accelerating field at the rear wall of the wakefield bubble and the self-injected bunch is achieved. In\u0000this work, the wakefield acceleration in a non-monotonically inhomogeneous plasma was investigated by numerical simulation using the OSIRIS code. In the first short section, the plasma density decreases, which ensures controlled self-injection of the electron bunch even at a low intensity of the laser pulse. Then, in a long section, the plasma density increases in order to prolong the time of movement of the self-injected bunch in the wakefield acceleration phase and increase the energy of the bunch. The article shows an increase in the effect of energy growth and an increase in the bunch charge compared to the previously obtained results. In addition, the effects of the formation of self-injected bunches with their subsequent retention for lasers of lower amplitude than in previous studies have been demonstrated, which expands the experimental possibilities.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" September","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364402","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
ASSESSMENT OF RADIOACTIVE AND CHEMICAL IMPURITIES IN PERTECHNETATE PRODUCED BY PHOTONUCLEAR TECHNOLOGY 评估光子核技术生产的过硫酸盐中的放射性和化学杂质
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-108
N. Dikiy, N. Krasnoselskiy, Y. Lyashko, O.P. Medvedeva, D. Medvedev
{"title":"ASSESSMENT OF RADIOACTIVE AND CHEMICAL IMPURITIES IN PERTECHNETATE PRODUCED BY PHOTONUCLEAR TECHNOLOGY","authors":"N. Dikiy, N. Krasnoselskiy, Y. Lyashko, O.P. Medvedeva, D. Medvedev","doi":"10.46813/2024-151-108","DOIUrl":"https://doi.org/10.46813/2024-151-108","url":null,"abstract":"The results of the release of 99Mo of molybdenum foil irradiated at LAE with E = 22 MeV and I = 700 μA are presented. The technology of electrolytic deposition 99mTc with its subsequent conversion into a radiopharmaceutical – pertechnetate is considered. The content of chemical and radionuclide impurities in pertechnetate was monitored, as well as testing of the radiopharmaceutical with various carriers for the diagnosis of animal organs.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"109 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141361527","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
ON THE DEVELOPMENT OF SUPER-RADIATION IN NOISE CONDITION 噪音条件下超级辐射的发展问题
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-084
E.V. Poklonskiy, V. Kuklin
{"title":"ON THE DEVELOPMENT OF SUPER-RADIATION IN NOISE CONDITION","authors":"E.V. Poklonskiy, V. Kuklin","doi":"10.46813/2024-151-084","DOIUrl":"https://doi.org/10.46813/2024-151-084","url":null,"abstract":"The influence of noise on field generation in the superradiant regime, when all oscillators interact with each other, is discussed. The process of phase synchronization of excited oscillators is considered and it is noted that its efficiency is affected by the spread of their amplitudes. External noise leads to phase mismatch and can suppress generation. The behavior of a system of oscillators near the generation threshold is considered. It has been shown that even below the threshold, a small external field can provoke generation up to amplitudes characteristic of processes in the absence of noise.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" May","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364681","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
ANALYSIS OF SEARCH SPECTRA AND METHODS OF PEAKS LOCATION DETERMINATION IN γ-SPECTRA γ-SPECTRA 中的搜索谱图分析和峰值定位方法
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-132
A.Yu. Berezhnoy, Y. Lyashko
{"title":"ANALYSIS OF SEARCH SPECTRA AND METHODS OF PEAKS LOCATION DETERMINATION IN γ-SPECTRA","authors":"A.Yu. Berezhnoy, Y. Lyashko","doi":"10.46813/2024-151-132","DOIUrl":"https://doi.org/10.46813/2024-151-132","url":null,"abstract":"In the program of processing of γ-spectra “GAMMAPEAKS” the algorithm of automatic search of peaks in γspectra based on use of convolution of sites of a spectrum from a negative smoothed second derivative of gaussian is developed. In the new version of this program before creation of a search spectrum the convolution of an initial\u0000spectrum with an ideal gaussian of small amplitude and variance was carried out. As a result of this convolution the initial spectrum on sites with “weak” statistics was well smoothed that facilitated search of peaks on a search spectrum. The search spectrum was under construction by convolution of the received γ-spectrum from the negative\u0000smoothed second derivative of gaussian that looks like a step. The search result of peaks shows that the “GAMMAPEAKS” program marks peaks more precisely, than the previous versions of this program in which there was no convolution with gaussian before creation of a search spectrum.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365248","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
OPTIMIZATION OF THE FOCUSING LATTICE OF THE MAGNETO-OPTICAL STRUCTURE OF THE MULTIFUNCTIONAL ACCELERATOR COMPLEX NSC KIPT 优化多功能加速器复合体 NSC KIPT 的磁光结构聚焦晶格
Problems of Atomic Science and Technology Pub Date : 2024-06-10 DOI: 10.46813/2024-151-050
M.F. Shulga, G.D. Kovalenko, I.S. Guk, P.I. Gladkikh, D.Yu. Shakhov
{"title":"OPTIMIZATION OF THE FOCUSING LATTICE OF THE MAGNETO-OPTICAL STRUCTURE OF THE MULTIFUNCTIONAL ACCELERATOR COMPLEX NSC KIPT","authors":"M.F. Shulga, G.D. Kovalenko, I.S. Guk, P.I. Gladkikh, D.Yu. Shakhov","doi":"10.46813/2024-151-050","DOIUrl":"https://doi.org/10.46813/2024-151-050","url":null,"abstract":"The results of the further optimization of the focusing lattice of the magneto-optical structure of the multifunctional accelerator complex of the NSC KIPT are presented. The basis of the complex is an electron recirculator with a superconducting accelerating structure. The maximum electron energy of about 600 MeV can be obtained when the beam passes through the accelerator three times. The beam layout into injection area and recirculator arcs are given. Focusing functions and beam sizes along the beam trajectory and at the output azimuths are calculated.","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":"141366254","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
ZIRCONIUM MATERIALS FOR MEDICAL APPLICATIONS 医疗用锆材料
Problems of Atomic Science and Technology Pub Date : 2024-01-29 DOI: 10.46813/2024-149-059
M. Pylypenko, A. Drobyshevska, R. V. Azhazha, I. G. Tantsyura, V. Pelykh
{"title":"ZIRCONIUM MATERIALS FOR MEDICAL APPLICATIONS","authors":"M. Pylypenko, A. Drobyshevska, R. V. Azhazha, I. G. Tantsyura, V. Pelykh","doi":"10.46813/2024-149-059","DOIUrl":"https://doi.org/10.46813/2024-149-059","url":null,"abstract":"The peculiarities of production nanostructured alloy Zr1%Nb using deformation methods for medical implants and their basic properties are investigated. The changes of the morphology, structure and properties of the oxide coatings on the surfaces of Zr1%Nb alloy formed in air at 500…800 ºС for a time up to 10 h are analyzed. Biocompatibility zirconium oxide coatings can be applied to the surfaces of orthopedic implants in bone surgery and dentistry and for the manufacturing of surgical instruments.","PeriodicalId":510408,"journal":{"name":"Problems of Atomic Science and Technology","volume":"59 1-2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140490354","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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