Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.013
V. Kovalchuk
Within the framework of eikonal approximation and the double folding model, a formalism for calculating the inclusive spectra of particles emitted from the deuteron breakup reaction is proposed. The spectra of protons from the reaction 2H(d,p) at an incident particle energy of 59.9 MeV are described. The calculated values of cross-sections are in good agreement with the corresponding experimental data.
{"title":"Inclusive reaction of deuteron fragmentation upon its collision with a target deuteron","authors":"V. Kovalchuk","doi":"10.15407/jnpae2024.01.013","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.013","url":null,"abstract":"Within the framework of eikonal approximation and the double folding model, a formalism for calculating the inclusive spectra of particles emitted from the deuteron breakup reaction is proposed. The spectra of protons from the reaction 2H(d,p) at an incident particle energy of 59.9 MeV are described. The calculated values of cross-sections are in good agreement with the corresponding experimental data.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140382465","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}
An original thermal-hydraulic method for optimizing the thermal resistance of thermal conductivity of fuel rod matrix upgrades has been developed to achieve the maximum burnup depth of nuclear fuel while ensuring safety conditions in operating and emergency modes of nuclear power plants. Based on the developed method, the boundaries of the optimization area for upgrades of the thermal resistance of the fuel rod matrix thermal conductivity are determined in accordance with the accepted optimization criteria and safety conditions. It is established that when optimizing upgrades to the thermal resistance of nuclear fuel, it is necessary to take into account both normal operating conditions and emergency conditions with impaired heat removal from the reactor core. It is established that the optimal values of thermal resistance of nuclear fuel thermal conductivity depend on the design and technical parameters of reactor installations, composition, and condition of nuclear fuel, accident management systems, and other factors.
{"title":"Thermal hydraulic method of optimizing the thermal resistance of nuclear fuel of reactor installations","authors":"V.I. Skalozubov, O.A. Dorozh, Yu.O. Komarov, M.P. Galatsan, A.S. Mazurenko, D.S. Bundev","doi":"10.15407/jnpae2024.01.043","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.043","url":null,"abstract":"An original thermal-hydraulic method for optimizing the thermal resistance of thermal conductivity of fuel rod matrix upgrades has been developed to achieve the maximum burnup depth of nuclear fuel while ensuring safety conditions in operating and emergency modes of nuclear power plants. Based on the developed method, the boundaries of the optimization area for upgrades of the thermal resistance of the fuel rod matrix thermal conductivity are determined in accordance with the accepted optimization criteria and safety conditions. It is established that when optimizing upgrades to the thermal resistance of nuclear fuel, it is necessary to take into account both normal operating conditions and emergency conditions with impaired heat removal from the reactor core. It is established that the optimal values of thermal resistance of nuclear fuel thermal conductivity depend on the design and technical parameters of reactor installations, composition, and condition of nuclear fuel, accident management systems, and other factors.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140382808","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.058
V. Revka, L. Chyrko
The paper considers the generalized temperature dependence of the stress intensity factor KJC in the WWER-1000 reactor pressure vessel metal, which was derived based on the surveillance test data for fracture toughness. The consistency of the shape of the Master curve and 95 % upper and lower confidence bounds with the experimental dependence of crack resistance parameters on temperature was studied. From the point of view of the level of conservatism and acceptability, a comparison of the normative curves of fracture toughness according to NPRR (Nuclear Power Rules and Regulations) G-7-002-86 and SOU NNEGC (Standard of organization of Ukraine, National Nuclear Energy Generating Company) 177:2019 with a 5 % confidence bound of the Master curve was carried out. The possibility of using RT0 temperature as a temperature index instead of TK for the normative fracture toughness curve of SOU NNEGC 177:2019 was considered.
{"title":"Comparison of Маster curve with normative method of estimating WWER-1000 reactor pressure vessel metal fracture toughness","authors":"V. Revka, L. Chyrko","doi":"10.15407/jnpae2024.01.058","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.058","url":null,"abstract":"The paper considers the generalized temperature dependence of the stress intensity factor KJC in the WWER-1000 reactor pressure vessel metal, which was derived based on the surveillance test data for fracture toughness. The consistency of the shape of the Master curve and 95 % upper and lower confidence bounds with the experimental dependence of crack resistance parameters on temperature was studied. From the point of view of the level of conservatism and acceptability, a comparison of the normative curves of fracture toughness according to NPRR (Nuclear Power Rules and Regulations) G-7-002-86 and SOU NNEGC (Standard of organization of Ukraine, National Nuclear Energy Generating Company) 177:2019 with a 5 % confidence bound of the Master curve was carried out. The possibility of using RT0 temperature as a temperature index instead of TK for the normative fracture toughness curve of SOU NNEGC 177:2019 was considered.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383281","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.079
Y. Khomutinin, O. V. Kosarchuk, S.V. Polischuk
A methodology for mapping the density of 137Cs contamination of agricultural land is proposed and tested. The methodology is based on data on gamma-dose rate measurements, gamma-logging results, and direct determination of 137Cs in soil samples, which were obtained by different organizations in different years. It allows to generalize all available information on 137Cs contamination of the lands and significantly improves the representativeness of estimates of the spatial distribution of the radionuclides at the mapping.
{"title":"Mapping of 137Cs contamination density on agricultural lands based on the summary of the survey results","authors":"Y. Khomutinin, O. V. Kosarchuk, S.V. Polischuk","doi":"10.15407/jnpae2024.01.079","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.079","url":null,"abstract":"A methodology for mapping the density of 137Cs contamination of agricultural land is proposed and tested. The methodology is based on data on gamma-dose rate measurements, gamma-logging results, and direct determination of 137Cs in soil samples, which were obtained by different organizations in different years. It allows to generalize all available information on 137Cs contamination of the lands and significantly improves the representativeness of estimates of the spatial distribution of the radionuclides at the mapping.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140381778","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.026
A. Taqi, W. Mansour
Using self-consistent Bardeen - Cooper - Schriffer + Hartree - Fock and quasiparticle random phase approximation, the isoscalar giant quadrupole resonance in the isotopes of 112,114,116,118,120,122,124Sn has been studied in this work. Five sets of Skyrme-type interactions of different values of the nuclear matter incompressibility coefficient KNM and effective mass m*/m are used in the calculations. Additionally, the impact of different types of pairing forces (i.e., volume, surface, and mixed) is examined. Comparisons are made between the computed strength distributions, centroid energies Ecen, scaled energies Es, and constrained energies Econ of the isoscalar giant quadrupole resonance and the available experimental data. Analysis is done on the relationships between KNM and m*/m, and the estimated properties.
{"title":"Isoscalar giant quadrupole resonance of even-even 112-124Sn isotopes using BCS-QRPA","authors":"A. Taqi, W. Mansour","doi":"10.15407/jnpae2024.01.026","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.026","url":null,"abstract":"Using self-consistent Bardeen - Cooper - Schriffer + Hartree - Fock and quasiparticle random phase approximation, the isoscalar giant quadrupole resonance in the isotopes of 112,114,116,118,120,122,124Sn has been studied in this work. Five sets of Skyrme-type interactions of different values of the nuclear matter incompressibility coefficient KNM and effective mass m*/m are used in the calculations. Additionally, the impact of different types of pairing forces (i.e., volume, surface, and mixed) is examined. Comparisons are made between the computed strength distributions, centroid energies Ecen, scaled energies Es, and constrained energies Econ of the isoscalar giant quadrupole resonance and the available experimental data. Analysis is done on the relationships between KNM and m*/m, and the estimated properties.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140382628","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.047
I.S. Skiter, V. Derenhovskyi
Based on the criteria for comparative analysis of scenarios grouped into factors, the value of scenarios was determined using the multicriteria optimization methodology. The evaluation methodology includes indicators of weights of factor groups and weights of criteria for the relevant factors. Scenario value assessment is determined by calculating a generalized weighted additive function. It is used to rank the scenarios with the established parametric characteristics of the criteria. The results of the scenario assessment and their ranking are recommendations for making decisions on the sequence of scenario implementation.
{"title":"Analysis of scenarios for transforming the object \"Ukryttya\" into an environmentally safe system by the method of multicriteria optimization","authors":"I.S. Skiter, V. Derenhovskyi","doi":"10.15407/jnpae2024.01.047","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.047","url":null,"abstract":"Based on the criteria for comparative analysis of scenarios grouped into factors, the value of scenarios was determined using the multicriteria optimization methodology. The evaluation methodology includes indicators of weights of factor groups and weights of criteria for the relevant factors. Scenario value assessment is determined by calculating a generalized weighted additive function. It is used to rank the scenarios with the established parametric characteristics of the criteria. The results of the scenario assessment and their ranking are recommendations for making decisions on the sequence of scenario implementation.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140382291","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.005
O. I. Davydovska, V.O. Nesterov, V. Yu. Denisov
Nucleon density distributions and nucleus-nucleus interaction potentials for the reactions 16,18O + 120Sn were obtained within the framework of the modified Thomas - Fermi method. In the calculations, all terms up to the second order in ћ in the quasi-classical distribution of kinetic energy were taken into account. Density-dependent Skyrme forces were used as nucleon-nucleon interaction. Using the found potentials, cross-sections of elastic scattering were calculated, which well describe the corresponding experimental data.
{"title":"Elastic scattering cross-sections of 16,18O + 120Sn reactions based on the potential of the modified Thomas - Fermi method with consideration of the core","authors":"O. I. Davydovska, V.O. Nesterov, V. Yu. Denisov","doi":"10.15407/jnpae2024.01.005","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.005","url":null,"abstract":"Nucleon density distributions and nucleus-nucleus interaction potentials for the reactions 16,18O + 120Sn were obtained within the framework of the modified Thomas - Fermi method. In the calculations, all terms up to the second order in ћ in the quasi-classical distribution of kinetic energy were taken into account. Density-dependent Skyrme forces were used as nucleon-nucleon interaction. Using the found potentials, cross-sections of elastic scattering were calculated, which well describe the corresponding experimental data.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383826","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 results of a complex study of the influence of nuclear radiation on the physical and chemical properties of distilled water, aqueous solutions of saccharides, ethyl alcohol, and their biological activity are presented. Irradiation was carried out on the M-30 microtron electron accelerator (12.5 MeV) and on isotope radiation stands based on 241Am, 137Cs, and 240Pu, which generate mixed nuclear radiation. The temporal evolution of chemical indicators and optical and frequency characteristics of electrical parameters of irradiated water environments are discussed. The selective biological effect of irradiated compounds on test microorganisms from different phylogenetic groups was established.
{"title":"Physico-chemical and biological properties of saccharides and alcohol after nuclear radiation treatment","authors":"V.T. Maslyuk, N. Svatiuk, V.V. Boyko, S.A. Burmey, O.I. Simkanych, O.O. Grabar, O.M. Pop, O.B. Tarnai, M.V. Goshovskyi, J.Y. Hainish","doi":"10.15407/jnpae2024.01.072","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.072","url":null,"abstract":"The results of a complex study of the influence of nuclear radiation on the physical and chemical properties of distilled water, aqueous solutions of saccharides, ethyl alcohol, and their biological activity are presented. Irradiation was carried out on the M-30 microtron electron accelerator (12.5 MeV) and on isotope radiation stands based on 241Am, 137Cs, and 240Pu, which generate mixed nuclear radiation. The temporal evolution of chemical indicators and optical and frequency characteristics of electrical parameters of irradiated water environments are discussed. The selective biological effect of irradiated compounds on test microorganisms from different phylogenetic groups was established.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383949","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.036
D. Nasef, E.T. Ellafi, S.M. El-Kadi
This study uses the interaction vector boson model (IVBM) to identify negative parity band (NPB) energy levels in the 162-16870Yb isotopes series. Simultaneously, the interacting boson model-2 (IBM-2) and the IVBM model were used to determine the ground state band (GSB) energy levels of the same isotopes. The ratios RI/2 and R(I+2)/I are calculated and E-GOS (E-gamma over spin) curves are plotted to determine the properties of these nuclei in the GSB. The isotopes 16270Yb, 16470Yb, and 166-16870Yb have different symmetries. Studies have shown that the IVBM model is more consistent with experimental results than the IBM-2 model, especially at high energy levels. This study provides a valuable comparison of results from different models, improving our understanding of the energy levels and properties of these isotopes.
{"title":"Comparative study between IVBM and IBM-2 models to calculate the energy levels for 162-16870Yb isotopes","authors":"D. Nasef, E.T. Ellafi, S.M. El-Kadi","doi":"10.15407/jnpae2024.01.036","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.036","url":null,"abstract":"This study uses the interaction vector boson model (IVBM) to identify negative parity band (NPB) energy levels in the 162-16870Yb isotopes series. Simultaneously, the interacting boson model-2 (IBM-2) and the IVBM model were used to determine the ground state band (GSB) energy levels of the same isotopes. The ratios RI/2 and R(I+2)/I are calculated and E-GOS (E-gamma over spin) curves are plotted to determine the properties of these nuclei in the GSB. The isotopes 16270Yb, 16470Yb, and 166-16870Yb have different symmetries. Studies have shown that the IVBM model is more consistent with experimental results than the IBM-2 model, especially at high energy levels. This study provides a valuable comparison of results from different models, improving our understanding of the energy levels and properties of these isotopes.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383988","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}
Pub Date : 2024-03-25DOI: 10.15407/jnpae2024.01.089
L.V. Mykhailov, M.V. Makovskyi, A.I. Piskarev, V. M. Shevel, Yu.V. Falchenko, L.V. Petrushynets, V. Fedorchuk
An installation for obtaining isotopes using the intense internal beam of protons on the U-240 cyclotron has been developed. A target was designed to produce the 22Na isotope under difficult conditions of thermal and radiation loads in a limited space of the cyclotron accelerator chamber. Radiochemical isolation of the 22Na isotope was carried out.
{"title":"Production of 22Na isotope using a device designed to irradiate a target with the internal proton beam of the U-240 cyclotron","authors":"L.V. Mykhailov, M.V. Makovskyi, A.I. Piskarev, V. M. Shevel, Yu.V. Falchenko, L.V. Petrushynets, V. Fedorchuk","doi":"10.15407/jnpae2024.01.089","DOIUrl":"https://doi.org/10.15407/jnpae2024.01.089","url":null,"abstract":"An installation for obtaining isotopes using the intense internal beam of protons on the U-240 cyclotron has been developed. A target was designed to produce the 22Na isotope under difficult conditions of thermal and radiation loads in a limited space of the cyclotron accelerator chamber. Radiochemical isolation of the 22Na isotope was carried out.","PeriodicalId":42588,"journal":{"name":"Nuclear Physics and Atomic Energy","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140384289","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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