The angular dependences of the coherent and incoherent parts of the coherent bremsstrahlung (CB) are different, thus the CB beam tagging efficiency differs from that of the bremsstrahlung. It has energy dependence close to the CB beam spectrum and depends on the CB peak energy. Thus, in the course of the cross section measurements, the systematic, measurements of the tagging efficiency should be usually produced. The paper shows that tagging efficiency can be estimated computationally by taking into account the background contribution to the detectors of the tagging system. This allows one to get cross sections simultaneously with the cross section asymmetry measurements in the case when the systematic tagging efficiency measurements were not performed.
{"title":"TAGGING EFFICIENCY ESTIMATION IN EXPERIMENTS WITH A COHERENT BREMSSTRAHLUNG BEAM","authors":"D. Burdeinyi, V. Ganenko","doi":"10.46813/2023-148-039","DOIUrl":"https://doi.org/10.46813/2023-148-039","url":null,"abstract":"The angular dependences of the coherent and incoherent parts of the coherent bremsstrahlung (CB) are different, thus the CB beam tagging efficiency differs from that of the bremsstrahlung. It has energy dependence close to the CB beam spectrum and depends on the CB peak energy. Thus, in the course of the cross section measurements, the systematic, measurements of the tagging efficiency should be usually produced. The paper shows that tagging efficiency can be estimated computationally by taking into account the background contribution to the detectors of the tagging system. This allows one to get cross sections simultaneously with the cross section asymmetry measurements in the case when the systematic tagging efficiency measurements were not performed.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"47 9","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006934","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}
O. Manuilenko, E. Prokhorenko, K. V. Pavlii, B. V. Zajtsev, S.N. Dubniuk, V. Lytvynenko, T. G. Prokhorenko
The beams of ions of helium (EHe+= 4 МeV) affected samples of tungsten with purity 99.5%. The radiation characteristics of tungsten have been studied. The change in characteristics was caused by irradiation with helium ion beams. Numerical values of the number of vacancies and phonons were obtained depending on the depth of the layer in tungsten (maximum at a depth of 6.1 μm). The sputtering coefficients of atoms from the surface of tungsten are found. The mean free path of helium ions was up to 70 μm. It is determined that the maximum destruction of the surface occurs in the region of the pits. Pits appear in five times more than bubbles.
{"title":"FEATURES OF STRUCTURAL DAMAGES OF SURFACE OF TUNGSTEN AS A RESULT OF IRRADIATION WITH HELIUM ION BEAMS WITH ENERGY 4 MeV","authors":"O. Manuilenko, E. Prokhorenko, K. V. Pavlii, B. V. Zajtsev, S.N. Dubniuk, V. Lytvynenko, T. G. Prokhorenko","doi":"10.46813/2023-148-033","DOIUrl":"https://doi.org/10.46813/2023-148-033","url":null,"abstract":"The beams of ions of helium (EHe+= 4 МeV) affected samples of tungsten with purity 99.5%. The radiation characteristics of tungsten have been studied. The change in characteristics was caused by irradiation with helium ion beams. Numerical values of the number of vacancies and phonons were obtained depending on the depth of the layer in tungsten (maximum at a depth of 6.1 μm). The sputtering coefficients of atoms from the surface of tungsten are found. The mean free path of helium ions was up to 70 μm. It is determined that the maximum destruction of the surface occurs in the region of the pits. Pits appear in five times more than bubbles.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"47 3","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006937","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}
This work is devoted to study of the dispersive properties of the slow electromagnetic waves that propagate along the planar waveguide structure that consists of semi-bounded plasma region, metamaterial slab and semibounded region of ordinary dielectric. It is studied the case when all media are homogeneous and isotropic. The dispersion properties, the phase and group velocities, as well as the electromagnetic field spatial structure of the eigen TE modes are studied in the frequency range where the metamaterial possess negative permeability.
这项工作致力于研究沿平面波导结构传播的慢速电磁波的色散特性，该结构由半约束等离子体区、超材料板和普通介质半约束区组成。研究了所有介质均质和各向同性的情况。在超材料具有负磁导率的频率范围内，研究了特征 TE 模式的色散特性、相位和群速度以及电磁场空间结构。
{"title":"SLOW ELECTROMAGNETIC WAVES IN PLANAR THREE-COMPONENT WAVEGUIDE STRUCTURE WITH MU-NEGATIVE METAMATERIAL","authors":"V. Galaydych, A. Sporov, V. Olefir, N. Azarenkov","doi":"10.46813/2023-148-058","DOIUrl":"https://doi.org/10.46813/2023-148-058","url":null,"abstract":"This work is devoted to study of the dispersive properties of the slow electromagnetic waves that propagate along the planar waveguide structure that consists of semi-bounded plasma region, metamaterial slab and semibounded region of ordinary dielectric. It is studied the case when all media are homogeneous and isotropic. The dispersion properties, the phase and group velocities, as well as the electromagnetic field spatial structure of the eigen TE modes are studied in the frequency range where the metamaterial possess negative permeability.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"68 2","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139006591","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}
The article considers possible characteristics of low-intensity secondary positron and electron beams, which can be obtained using an electron accelerator with energy of ~100 MeV and average current of some μA. Preliminary simulation shows that using a tungsten converter of 2X0 thick and collimation of secondary particles beam, such accelerator allows one to get electron and positron secondary beams with energy of ~ 5…70 MeV, intensity of ~10-6-8 from the primary electron beam intensity, and energy spread of about some percent. Such low-intensity beams can be used for researches in the field of interaction of radiation with amorphous ubstances and crystals, testing detectors and scintillation materials.
{"title":"LOW INTENSITY BEAMS OF ELECTRONS AND POSITRONS IN THE ENERGY RANGE UP TO 100 MeV AT IHEPNP FACILITY","authors":"D. Burdeinyi, V. Ganenko","doi":"10.46813/2023-148-106","DOIUrl":"https://doi.org/10.46813/2023-148-106","url":null,"abstract":"The article considers possible characteristics of low-intensity secondary positron and electron beams, which can be obtained using an electron accelerator with energy of ~100 MeV and average current of some μA. Preliminary simulation shows that using a tungsten converter of 2X0 thick and collimation of secondary particles beam, such accelerator allows one to get electron and positron secondary beams with energy of ~ 5…70 MeV, intensity of ~10-6-8 from the primary electron beam intensity, and energy spread of about some percent. Such low-intensity beams can be used for researches in the field of interaction of radiation with amorphous ubstances and crystals, testing detectors and scintillation materials.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"49 23","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007214","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}
V.Ya. Chernyak, V. Iukhymenko, K. Iukhymenko, D. D. Tretiakov, O.M. Tsymbaliuk, S.S. Nedovesov, Z.O. Prokofiieva
In this work, the results of an experimental study of plasma parameters of a secondary discharge at atmospheric pressure, sustained by a low-power (~ 100 W) rotating gliding discharge in an air stream under conditions of a significant excess of the plasma channel length of the secondary discharge over the length of the self-sustained discharge channel in the range of 1...100, are presented. Plasma parameter determination was carried out using emission spectroscopy of the plasma with the SpecAir program. The assessment of the electric field intensity in the secondary discharge plasma was based on the dependencies between the discharge voltage drop and the length of the discharge current channel.
{"title":"PROPERTIES OF A SECONDARY DISCHARGE PLASMA SUPPORTED BY A ROTATING GLIDING DISCHARGE","authors":"V.Ya. Chernyak, V. Iukhymenko, K. Iukhymenko, D. D. Tretiakov, O.M. Tsymbaliuk, S.S. Nedovesov, Z.O. Prokofiieva","doi":"10.46813/2023-148-145","DOIUrl":"https://doi.org/10.46813/2023-148-145","url":null,"abstract":"In this work, the results of an experimental study of plasma parameters of a secondary discharge at atmospheric pressure, sustained by a low-power (~ 100 W) rotating gliding discharge in an air stream under conditions of a significant excess of the plasma channel length of the secondary discharge over the length of the self-sustained discharge channel in the range of 1...100, are presented. Plasma parameter determination was carried out using emission spectroscopy of the plasma with the SpecAir program. The assessment of the electric field intensity in the secondary discharge plasma was based on the dependencies between the discharge voltage drop and the length of the discharge current channel.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"38 8","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007471","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}
O. Manuilenko, V.A. Soshenkо, A. V. Zabotin, B. V. Zajtsev, V.G. Zhuravlyov
The ion linear accelerators stable operation essentially depends on the ion injector. To ensure maximum capture of the ion beam injected into the accelerating structure, the injector must be able to adjust the beam parameters. The paper describes the developed new injector power supply system, built on modern assemblies, which allows smoothly changing the modulator pulse duration in the range of 300…2000 µs. The analysis was carried out and the shortcomings of the previous systems were eliminated. The expected increase in the accelerated ion beam current is 15…20%. Related results include a decrease in the parasitic load capacitances of pulsed devices, a reduction in size, and the rejection of high-voltage isolation transformers, which increases the reliability of the accelerator.
{"title":"HIGH-VOLTAGE MODULATOR FOR ION LINAC INJECTOR WITH SMOOTH PULSE DURATION CONTROL","authors":"O. Manuilenko, V.A. Soshenkо, A. V. Zabotin, B. V. Zajtsev, V.G. Zhuravlyov","doi":"10.46813/2023-148-122","DOIUrl":"https://doi.org/10.46813/2023-148-122","url":null,"abstract":"The ion linear accelerators stable operation essentially depends on the ion injector. To ensure maximum capture of the ion beam injected into the accelerating structure, the injector must be able to adjust the beam parameters. The paper describes the developed new injector power supply system, built on modern assemblies, which allows smoothly changing the modulator pulse duration in the range of 300…2000 µs. The analysis was carried out and the shortcomings of the previous systems were eliminated. The expected increase in the accelerated ion beam current is 15…20%. Related results include a decrease in the parasitic load capacitances of pulsed devices, a reduction in size,\u0000and the rejection of high-voltage isolation transformers, which increases the reliability of the accelerator.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"25 9","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139007817","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}
This paper describes a technique for measuring the power of the microwave source of the “VOLNA” setup, designed to study the electron cyclotron resonances (ECR) in plasma. The purpose of this work was to increase the electric field strength in the plasma, leading to an increase in the number of ECR resonances, which in turn directly depends on the power of the microwave power source. As measurements of the microwave power source “Luch-58” with the M3-13/1 wattmeter showed, satisfactory measurement accuracy can be achieved by increasing the average microwave power to 10…20 W by increasing the pulse repetition rate from the MI-125 magnetron from 1 to 5…10 Hz.
{"title":"A METHOD FOR MEASURING THE POWER OF A HIGH-AMPLITUDE PULSED-MODULATED MICROWAVE SIGNAL FOR THE ECR PLASMA HEATING","authors":"D.Yu. Zalesky, V.A. Buts, G.V. Sotnikov","doi":"10.46813/2023-148-131","DOIUrl":"https://doi.org/10.46813/2023-148-131","url":null,"abstract":"This paper describes a technique for measuring the power of the microwave source of the “VOLNA” setup, designed to study the electron cyclotron resonances (ECR) in plasma. The purpose of this work was to increase the electric field strength in the plasma, leading to an increase in the number of ECR resonances, which in turn directly depends on the power of the microwave power source. As measurements of the microwave power source “Luch-58” with the M3-13/1 wattmeter showed, satisfactory measurement accuracy can be achieved by increasing the average microwave power to 10…20 W by increasing the pulse repetition rate from the MI-125 magnetron from 1 to 5…10 Hz.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"37 2","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139008864","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}
Experimental results on the generation of accelerated particles in solid matrices saturated with isotopes of hydrogen under electric discharge are presented. Registration of accelerated particles was carried out by measuring the spectra of charged particles emitted by the target. The emission of α-particles with an energy yield of 10…14 MeV, the yield of protons with an energy in the range of 5.8…7.8 MeV, and the yield of neutrons with an energy in the range of 3…10 MeV were observed. These observations may indicate that the low energy nuclear reactions took place under investigated conditions.
{"title":"GENERATION OF ACCELERATED PARTICLES IN SOLID MATRICES SATURATED WITH ISOTOPES OF LIGHT NUCLEI","authors":"V. Gamov, V. Dubinko, V. Borysenko, Klee Irwin","doi":"10.46813/2023-148-018","DOIUrl":"https://doi.org/10.46813/2023-148-018","url":null,"abstract":"Experimental results on the generation of accelerated particles in solid matrices saturated with isotopes of hydrogen under electric discharge are presented. Registration of accelerated particles was carried out by measuring the spectra of charged particles emitted by the target. The emission of α-particles with an energy yield of 10…14 MeV,\u0000the yield of protons with an energy in the range of 5.8…7.8 MeV, and the yield of neutrons with an energy in the range of 3…10 MeV were observed. These observations may indicate that the low energy nuclear reactions took place under investigated conditions.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"24 12","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139008878","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}
G. P. Opaleva, I. Garkusha, A.V. Taran, S. P. Gubarev, M. Zolototrubova, V. Makhlai, P. Vorontsov, Y. Gnidenko
The programmable controller for ozone-plasma sterilizer for programmatic operation of the units and continuous monitoring of the sterilization process has been developed. The design of the controller is based on the model of the PIC18F series microcontroller of the XLP family. The software that ensures the operation of the plasma sterilizer (control and monitoring of parameters) is written in a specialized C++ software in the MPLAB IDE processing environment under the Windows 10 operating system.
用于臭氧等离子灭菌器的可编程控制器已经研制成功，可对设备进行编程操作，并对灭菌过程进行连续监控。控制器的设计基于 XLP 系列 PIC18F 系列微控制器的模型。确保等离子灭菌器运行（参数控制和监测）的软件是在 Windows 10 操作系统下，在 MPLAB IDE 处理环境中，用专门的 C++ 软件编写的。
{"title":"DEVELOPMENT OF MICROPROCESSOR BASED CONTROL SYSTEM FOR LOW-TEMPERATURE PLASMA STERILIZER WITH ULTRASONIC CAVITATION","authors":"G. P. Opaleva, I. Garkusha, A.V. Taran, S. P. Gubarev, M. Zolototrubova, V. Makhlai, P. Vorontsov, Y. Gnidenko","doi":"10.46813/2023-148-141","DOIUrl":"https://doi.org/10.46813/2023-148-141","url":null,"abstract":"The programmable controller for ozone-plasma sterilizer for programmatic operation of the units and continuous monitoring of the sterilization process has been developed. The design of the controller is based on the model of the PIC18F series microcontroller of the XLP family. The software that ensures the operation of the plasma sterilizer (control and monitoring of parameters) is written in a specialized C++ software in the MPLAB IDE processing environment under the Windows 10 operating system.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"17 2","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139008997","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}
S.K. Romanovskyi, V. M. Boriskin, R. Pomatsalyuk, V. Uvarov, Y. Titarenko, V.Yu. Titov, V. Shevchenko
Methods for evaluating the radiation resistance of structural materials of nuclear reactors have been developed and research is being carried out in NSC KIPT. As a part of these studies, a supercritical water convection loop with a chamber for irradiation of the tested samples by electron beam of the accelerator LU-10 (beam energy of 8…10 MeV, beam power up to 10 kW) was developed. A pyrometric system based on a DSLR camera (Digital Single-Lens Reflex Camera) has been created for the remote continuous non-intrusive control of the surface temperature of the irradiation cell in the range of 350…550°С. The work presents the results of calibration and use of the developed system in the conditions of a 500-hour run of sample irradiation in the loop.
{"title":"REMOTE MONITORING OF RADIATION TEST TEMPERATURE REGIME AT A HIGH-CURRENT ELECTRON ACCELERATOR","authors":"S.K. Romanovskyi, V. M. Boriskin, R. Pomatsalyuk, V. Uvarov, Y. Titarenko, V.Yu. Titov, V. Shevchenko","doi":"10.46813/2023-148-172","DOIUrl":"https://doi.org/10.46813/2023-148-172","url":null,"abstract":"Methods for evaluating the radiation resistance of structural materials of nuclear reactors have been developed and research is being carried out in NSC KIPT. As a part of these studies, a supercritical water convection loop with a chamber for irradiation of the tested samples by electron beam of the accelerator LU-10 (beam energy of 8…10 MeV, beam power up to 10 kW) was developed. A pyrometric system based on a DSLR camera (Digital Single-Lens Reflex Camera) has been created for the remote continuous non-intrusive control of the surface temperature of the irradiation cell in the range of 350…550°С. The work presents the results of calibration and use of the developed system in the conditions of a 500-hour run of sample irradiation in the loop.","PeriodicalId":54580,"journal":{"name":"Problems of Atomic Science and Technology","volume":"9 2","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139009391","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}
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