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Problems of Atomic Science and Technology最新文献

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SIMULATION OF THE IDENTICAL PLATEAUS FORMATION ON PLASMA WAKEFIELD FOR LONG DRIVER-BUNCH AND WITNESS-BUNCHES 模拟长驱动束和见证束在等离子体唤醒场上形成的相同高原
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-065
D.O. Shendryk, R. Ovsiannikov, V.I. Maslov, J. Osterhof, M. Thevenet
{"title":"SIMULATION OF THE IDENTICAL PLATEAUS FORMATION ON PLASMA WAKEFIELD FOR LONG DRIVER-BUNCH AND WITNESS-BUNCHES","authors":"D.O. Shendryk, R. Ovsiannikov, V.I. Maslov, J. Osterhof, M. Thevenet","doi":"10.46813/2023-148-065","DOIUrl":"https://doi.org/10.46813/2023-148-065","url":null,"abstract":"We formulate scenario for the simultaneous enhancement of the charge of accelerated electrons, improving such characteristics as the transformer ratio, efficiency, low energy spread, and emittance of bunches of accelerated electrons in the blowout regime by the simultaneous achievement of the identical plateaus on the accelerating wakefields\u0000and other identical plateaus on the decelerating wakefields.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139009337","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
SIMULATION OF DEFLECTING SYSTEM BASED ON PERMANENT MAGNETS WITH A NON-UNIFORM MAGNETIC FIELD TO REGISTER ACCELERATED AND DECELERATED ELECTRONS GENERATED IN DIELECTRIC LASER ACCELERATOR 模拟基于非均匀磁场永久磁铁的偏转系统，以记录介质激光加速器中产生的加速和减速电子
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-110
I. V. Beznosenko, A. Vasyliev, G.V. Sotnikov
{"title":"SIMULATION OF DEFLECTING SYSTEM BASED ON PERMANENT MAGNETS WITH A NON-UNIFORM MAGNETIC FIELD TO REGISTER ACCELERATED AND DECELERATED ELECTRONS GENERATED IN DIELECTRIC LASER ACCELERATOR","authors":"I. V. Beznosenko, A. Vasyliev, G.V. Sotnikov","doi":"10.46813/2023-148-110","DOIUrl":"https://doi.org/10.46813/2023-148-110","url":null,"abstract":"Deflection system was designed and computed to spatially separate beam of electrons with different energies in the range of several tens of kiloelectronvolts. Three specific cases with electron energies of (33.9 ± 0.3), (18.2 ± 0.3), and (14.2 ± 0.3) keV were examined for experiments using Dielectric Laser Accelerators. The results of calculations of the spatial distribution of the magnetic field induced by a pair of permanent magnets and its effect on electrons moving in this field are presented. Such magnetic spectrometers differ from their analogues in that par-\u0000ticles do not move along the center between magnets in a uniform magnetic field, but along their periphery, where the field is non-uniform, which provides higher resolution. Presented spectrometer provides the electron energy resolution of less than 10 eV. Research on such systems holds significant importance for the further development of methods for analyzing electrons with varying energies in modern accelerators and spectrometers.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007137","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
LUE-40 LINAC BASED NEUTRON SOURCE FOR IRRADIATION TESTS OF HEP DETECTOR MATERIALS AND COMPONENTS 基于 LUE-40 直列加速器的中子源，用于氦探测器材料和部件的辐照试验
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-150
V. Mytrochenko, S. O. Perezhogin, L. Selivanov, V.A. Kushnir
{"title":"LUE-40 LINAC BASED NEUTRON SOURCE FOR IRRADIATION TESTS OF HEP DETECTOR MATERIALS AND COMPONENTS","authors":"V. Mytrochenko, S. O. Perezhogin, L. Selivanov, V.A. Kushnir","doi":"10.46813/2023-148-150","DOIUrl":"https://doi.org/10.46813/2023-148-150","url":null,"abstract":"A photoneutrons source based on the NSC KIPT LUE-40 electron linac was designed and constructed to study the effect of neutron and gamma radiation on the properties of materials used in high-energy physics (HEP) detectors. The source was used to irradiate the optical elements of the PLUME detector in LHCb experiment with the neutron fluency of 1014 cm-2. Ways to increase the neutron yield, in particular, by installing an additional high Z metal shell are shown. At electron energy of 85 MeV, the neutron yield exceeds 10-2\u0000neutron over one electron.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007532","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
ANALYTICAL AND NUMERICAL SOLUTIONS OF THE PARABOLIC EQUATION ISHIMARU FOR THE ELECTROMAGNETIC FIELD, DESCRIBING THE TEMPORARY PROPERTIES OF THE OUTPUT VIDEO-PULSE HETEROGENEOUS NON-DISSIPATIVE MEDIUM 电磁场抛物线方程 ishimaru 的分析和数值解，描述输出视频脉冲异质非耗散介质的临时特性
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-052
O. Mazmanishvili
{"title":"ANALYTICAL AND NUMERICAL SOLUTIONS OF THE PARABOLIC EQUATION ISHIMARU FOR THE ELECTROMAGNETIC FIELD, DESCRIBING THE TEMPORARY PROPERTIES OF THE OUTPUT VIDEO-PULSE HETEROGENEOUS NON-DISSIPATIVE MEDIUM","authors":"O. Mazmanishvili","doi":"10.46813/2023-148-052","DOIUrl":"https://doi.org/10.46813/2023-148-052","url":null,"abstract":"The parabolic Ishimaru equation for the electromagnetic field coherence function, which describes the temporal properties of pulse at the output of inhomogeneous non-dissipative medium, is considered. The generalization of the approach used in the Ishimaru model to describe the temporal evolution of the envelope of the monochromatic electromagnetic video-pulse in homogeneous non-dissipative media is generalized to the case of non-homogeneous nondissipative media. An attempt was made to take into account the influence of the inhomogeneity of the medium on the shape of the resulting pulse. An explicit expression for the Green's function of the problem is obtained and number of numerical experiments are carried out. The paper studies the invariant longitudinal (temporal) properties of the envelope of monochromatic electromagnetic pulses recorded after passing through flat layer of the scattering inhomogeneous medium, i.e. properties that remain unchanged when the environment parameters vary. Examples of\u0000numerical experiments are given.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139008728","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
CONCENTRATION OF RADON IN SPRINGS OF KELBAJAR REGION, REGULARITIES OF ADSORBTION OF RADIONUCLIDES FROM SOLUTIONS ON ADSORBENTS 凯尔巴贾尔地区泉水中的氡浓度，吸附剂对溶液中放射性核素的吸附规律
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-023
Kh.F. Mammadov, H. Shiraliyeva, A.H. Huseynova, A.Sh. Huseynov
{"title":"CONCENTRATION OF RADON IN SPRINGS OF KELBAJAR REGION, REGULARITIES OF ADSORBTION OF RADIONUCLIDES FROM SOLUTIONS ON ADSORBENTS","authors":"Kh.F. Mammadov, H. Shiraliyeva, A.H. Huseynova, A.Sh. Huseynov","doi":"10.46813/2023-148-023","DOIUrl":"https://doi.org/10.46813/2023-148-023","url":null,"abstract":"Higher values of the total radiation and the intensity of alpha radiation were observed in soil areas around thermal and cold springs on the mountain slopes of the Kelbajar region of Azerbaijan. The concentration of radioactive radon in the water of the thermal springs of the “Istisu” sanatorium, located at an altitude (2203 m), is below the directive indicator. However, the concentration of radon in the water of springs, located at an altitude of 2385 m, exceeds the directive indicator by 100 times. Soil samples taken from areas around springs contain uranium isotopes in similar proportions found in natural uranium deposits. Regularities of sorption of uranium isotopes from aqueous solutions on some adsorbents have been studied. It has been established that weak Van der Waals forces exist between the absorbed isotopes and the adsorbents.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007295","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
FORMATION AND FENOMENOLOGICAL DESCRIPTION OF BREMSSTRAHLUNG BEAM FOR PHOTONUCLEAR PROCESSES 用于光核过程的轫致辐射光束的形成和现象学描述
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-180
V. Uvarov, A. Zakharchenko, N. Dikiy, Y. Lyashko, R. Pomatsalyuk, V. Shevchenko, E. Malets
{"title":"FORMATION AND FENOMENOLOGICAL DESCRIPTION OF BREMSSTRAHLUNG BEAM FOR PHOTONUCLEAR PROCESSES","authors":"V. Uvarov, A. Zakharchenko, N. Dikiy, Y. Lyashko, R. Pomatsalyuk, V. Shevchenko, E. Malets","doi":"10.46813/2023-148-180","DOIUrl":"https://doi.org/10.46813/2023-148-180","url":null,"abstract":"Within the framework of the developed analytical model for description of the isotope production by bremsstrahlung radiation, the three key phenomenological parameters of the process have been established. Those parameters determine the total yield and volumetric distribution of the products of a photonuclear reaction with dominating giant dipole resonance (GDR) in a target. The applicability conditions as well as the accuracy of the phenomenological description of a flux of the above-threshold bremsstrahlung photons are studied. The form of description of a reference bremsstrahlung spectrum for analytical calculation of the photonuclear processes is proposed. The conditions and accuracy of its reproduction at an electron accelerator are investigated","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139008140","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
NUCLEOSYNTHESIS OF NUCLEAR MATTER: ENTROPY EFFECTS 核物质的核合成：熵效应
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-003
V.T. Maslyuk, Ye.O. Skakun, I.L. Semisalov, M. Romanyuk
{"title":"NUCLEOSYNTHESIS OF NUCLEAR MATTER: ENTROPY EFFECTS","authors":"V.T. Maslyuk, Ye.O. Skakun, I.L. Semisalov, M. Romanyuk","doi":"10.46813/2023-148-003","DOIUrl":"https://doi.org/10.46813/2023-148-003","url":null,"abstract":"The work considers an alternative way of formation of chemical elements during the disintegration of nuclear matter formed during the explosion of stars. In addition to the energy parameters that determine the stability of nuclear matter and the ways of its disintegration, the entropy factor must also be considered. The calculation points to\u0000its extreme feature in the transition from symmetric to structured or asymmetric decay caused by the “inclusion” of quantum effects from nuclear shells.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139008228","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
REGULARIZATION OF WAKEFIELD IN A WEAKLY NONLINEAR REGIME 弱非线性状态下的唤醒场正则化
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-080
I.V. Demydenko
{"title":"REGULARIZATION OF WAKEFIELD IN A WEAKLY NONLINEAR REGIME","authors":"I.V. Demydenko","doi":"10.46813/2023-148-080","DOIUrl":"https://doi.org/10.46813/2023-148-080","url":null,"abstract":"In blowout regime of wakefield excitation, strong chaotization of wake occurs. However, for electron-positron colliders and X-ray microscopes, a weakly nonlinear regime is proposed with the formation of a regular short chain of bubbles. To increase the efficiency of the wakefield accelerator, it is necessary that not separate bunches participate. In this paper in 2D plane geometry, the dependence of the number of formed bubbles and their regularization on the degree of wake non-linearity and parameters: driver current, ion mobility, transverse plasma size and profile is studied. We will show that in a weakly nonlinear regime the regular chain of bubbles becomes longer.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139009865","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
GENERATION OF COMPENSATED ION-ELECTRON FLOW IN THE COMBINED MAGNETRON-ION-PLASMA SYSTEM 在磁控-离子-等离子体组合系统中产生补偿离子-电子流
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-090
A. Zykov, N. Yefymenko, S. Dudin, S. Yakovin, N. Azarenkov
{"title":"GENERATION OF COMPENSATED ION-ELECTRON FLOW IN THE COMBINED MAGNETRON-ION-PLASMA SYSTEM","authors":"A. Zykov, N. Yefymenko, S. Dudin, S. Yakovin, N. Azarenkov","doi":"10.46813/2023-148-090","DOIUrl":"https://doi.org/10.46813/2023-148-090","url":null,"abstract":"The design and characteristics of the combined Magnetron-Ion-Plasma System (MIPS) are presented. The system includes a magnetron sputtering system and a Hall-type ion source with a common magnetic system and common power supply allowing the generation of quasi-neutral ion-electron flow, which provides complete charge neutralization on the processed dielectric surface. The formation of the anode electron layer and the energy spectra of ions are experimentally investigated. A phenomenological model of the combined discharge in EН fields is proposed. Theoretical calculations and experimental data are in reasonable agreement.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007873","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
ISOLATION OF ELECTRONS BY THE MAGNETIC FIELDOF A CUSP FOR HIGH-DENSITY ION BEAM ACCELERATION 利用尖顶磁场隔离电子，实现高密度离子束加速
IF 0.2
Problems of Atomic Science and Technology Pub Date : 2023-12-12 DOI: 10.46813/2023-148-096
O. V. Fedorovskaya, V. Maslov, I. Onishchenko
{"title":"ISOLATION OF ELECTRONS BY THE MAGNETIC FIELD\u0000OF A CUSP FOR HIGH-DENSITY ION BEAM ACCELERATION","authors":"O. V. Fedorovskaya, V. Maslov, I. Onishchenko","doi":"10.46813/2023-148-096","DOIUrl":"https://doi.org/10.46813/2023-148-096","url":null,"abstract":"2.5D numerical simulation was carried out of the process of ions isolation from electrons of a compensated ion beam by the cusp magnetic field of the before entering the accelerating gap located in the region of zero magnetic field of the cusp, followed by the compensation of the accelerated ion beam with new electrons and transportation of\u0000the compensated ion beam to the next section of the linear induction ion accelerator. In contrast to the previously simulated compensated high-current ion beam with an energy of 250 keV (now non-existent), the equivalent plasma flow of a traditional coaxial plasma gun with real parameters: density 1010…1012 cm-3 and velocity 107 cm/s was\u0000considered as an injected compensated ion beam.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007964","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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