{"title":"Kepler problem in general relativity with Lorentz-covariant deformed Poisson brackets","authors":"Kaitlin Kovach, M. Samar","doi":"10.30970/jps.26.4001","DOIUrl":"https://doi.org/10.30970/jps.26.4001","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"7 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77896364","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}
{"title":"Influence of electric field E3 on the phase transition and thermodynamic characteristics of GPI ferroelectrics","authors":"R. Levitskii, I. R. Zachek, A. S. Andrushchak","doi":"10.30970/jps.26.3601","DOIUrl":"https://doi.org/10.30970/jps.26.3601","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"43 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76210792","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. Shuaibov, R. Hrytsak, O. Minya, A. Malinina, Yuriy Bilak, Z. Gomoki
{"title":"Spectroscopic diagnostics of overstressed nanosecond discharge plasma between zinc electrodes in air and nitrogen","authors":"O. Shuaibov, R. Hrytsak, O. Minya, A. Malinina, Yuriy Bilak, Z. Gomoki","doi":"10.30970/jps.26.2501","DOIUrl":"https://doi.org/10.30970/jps.26.2501","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"15 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81732697","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}
{"title":"Thermomagnetic instabilities in a nonuniformly rotating electrically conductive fluid","authors":"M. Kopp, A. Tur, V. Yanovsky","doi":"10.30970/jps.26.4401","DOIUrl":"https://doi.org/10.30970/jps.26.4401","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"72 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76071777","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. Drapak, S. V. Gavrylyuk, Y. Khalavka, V. D. Fotiy, P. Fochuk, O. Fediv
{"title":"X-ray diffraction characterization of nanostructured native oxide films on indium selenide by modified Sherrer and Williamson-Hall methods","authors":"S. Drapak, S. V. Gavrylyuk, Y. Khalavka, V. D. Fotiy, P. Fochuk, O. Fediv","doi":"10.30970/jps.26.2801","DOIUrl":"https://doi.org/10.30970/jps.26.2801","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"48 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74156493","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}
P. P. Vankevych, B. Drobenko, N. Ftomyn, Y. Chornodolskyy, V. V. Dehtiarenko, A. V. Sliusarenko, A. Chernenko, P. A. Bolkot
{"title":"Determining the position of a radiation source using the conical diffraction method","authors":"P. P. Vankevych, B. Drobenko, N. Ftomyn, Y. Chornodolskyy, V. V. Dehtiarenko, A. V. Sliusarenko, A. Chernenko, P. A. Bolkot","doi":"10.30970/jps.26.4403","DOIUrl":"https://doi.org/10.30970/jps.26.4403","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"22 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83259787","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}
M. Romanyuk, J. J. Gaynish, O. M. Turhovsky, M. V. Goshovsky, G. F. Pitchenko, I. Megela, O. Parlag, V. Maslyuk
articles on the formation of radiation (cid:28)elds and discusses their characteristics for nuclear physics installati-ons. It includes application of various methods of measuring the currents of charged particles, methods of detecting radiation (cid:28)elds using various recording media and changing the spatial distribution using (cid:29)attening (cid:28)lters. Attention is also paid to an alternative low-cost registration method using commercial window glass. For the (cid:16)Mikrotron M-30(cid:17) accelerator, parameters of the radiation (cid:28)elds were investigated on a metrological bench oriented along the electron beam at distances of 0(cid:21)400 cm from the M-30 beam output node. Dosimetric characteristics were determined using ionization chambers of the ROBOTRON dosimeter and a Faraday cylinder designed for diagnostics of electron beams with energies up to 30 MeV. In this work, to control the spatial uniformity of the radiation (cid:28)eld, we used a registration method based on glass plates; the degree of uniformity of the radiation (cid:28)eld was determined by a change in their optical characteristics, namely, the degree of darkening. For correctness of the obtained distributions, the radiation dose was limited to the region of linearity of glass darkening from the absorbed dose. The use of a radiation shaper ensured irradiation of samples with radiation of a uniform (cid:28)eld in the irradiation plane of 30%, which satis(cid:28)es the conditions of radiation tests for most objects. Analytical dependencies of the radiation dose on the distance to the output node M-30 were obtained using a Faraday cylinder. The combination of these dose dependencies of glass darkening, the spatial homogeneity of the (cid:28)elds, along with the dose dependence on the distance to the source node, made it possible to develop protocols for dosimetric tracking of the irradiation process for materials and devices for various purposes.
{"title":"Methods of formation and control of radiation fields of M-30 microtron","authors":"M. Romanyuk, J. J. Gaynish, O. M. Turhovsky, M. V. Goshovsky, G. F. Pitchenko, I. Megela, O. Parlag, V. Maslyuk","doi":"10.30970/jps.26.1201","DOIUrl":"https://doi.org/10.30970/jps.26.1201","url":null,"abstract":"articles on the formation of radiation (cid:28)elds and discusses their characteristics for nuclear physics installati-ons. It includes application of various methods of measuring the currents of charged particles, methods of detecting radiation (cid:28)elds using various recording media and changing the spatial distribution using (cid:29)attening (cid:28)lters. Attention is also paid to an alternative low-cost registration method using commercial window glass. For the (cid:16)Mikrotron M-30(cid:17) accelerator, parameters of the radiation (cid:28)elds were investigated on a metrological bench oriented along the electron beam at distances of 0(cid:21)400 cm from the M-30 beam output node. Dosimetric characteristics were determined using ionization chambers of the ROBOTRON dosimeter and a Faraday cylinder designed for diagnostics of electron beams with energies up to 30 MeV. In this work, to control the spatial uniformity of the radiation (cid:28)eld, we used a registration method based on glass plates; the degree of uniformity of the radiation (cid:28)eld was determined by a change in their optical characteristics, namely, the degree of darkening. For correctness of the obtained distributions, the radiation dose was limited to the region of linearity of glass darkening from the absorbed dose. The use of a radiation shaper ensured irradiation of samples with radiation of a uniform (cid:28)eld in the irradiation plane of 30%, which satis(cid:28)es the conditions of radiation tests for most objects. Analytical dependencies of the radiation dose on the distance to the output node M-30 were obtained using a Faraday cylinder. The combination of these dose dependencies of glass darkening, the spatial homogeneity of the (cid:28)elds, along with the dose dependence on the distance to the source node, made it possible to develop protocols for dosimetric tracking of the irradiation process for materials and devices for various purposes.","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"30 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89906384","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 theory of thermal (cid:29)uctuations in open hydrodynamic steady states (OHSS) is presented exclusively within the framework of hydrodynamics. The history of studies of (cid:29)uctuations in a continuous medium with a stationary (cid:29)ux is described. It is shown that the application the (cid:29)uctuation-dissipation theorem (FDT) to the OHSS with the requirement of ful(cid:28)lling the Onsager’s reciprocal relations ((cid:29)uctuating hydrodynamics), is erroneous. The reason is that the (cid:29)ux, changing the dynamics and initial values of the (cid:29)uctuations, violates the detailed balance existing in equilibrium. This is demonstrated by the example of the Mandelstam problem on (cid:29)uctuations in a medium with a heat (cid:29)ux. For this problem, the structure dynamic factor is calculated for an isotropic solid and a liquid. The loss of time symmetry by the correlation functions of (cid:29)uctuations and the asymmetry of their spectral representations in this problem is due to the spatial temperature variation, which determines the (cid:29)ux. In order to show the generality of this result for all OHSS with spatial heterogeneity, the Kelvin problem on thermal (cid:29)uctuations of the interface displacements between two liquids is also considered. The upper moving liquid has velocity potential changes as the temperature in the Mandelstam problem. Reciprocal relations for both the Mandelstam and the Kelvin problems are pointed out
{"title":"Mandelstam problem","authors":"V. Lesnikov","doi":"10.30970/jps.26.3003","DOIUrl":"https://doi.org/10.30970/jps.26.3003","url":null,"abstract":"The theory of thermal (cid:29)uctuations in open hydrodynamic steady states (OHSS) is presented exclusively within the framework of hydrodynamics. The history of studies of (cid:29)uctuations in a continuous medium with a stationary (cid:29)ux is described. It is shown that the application the (cid:29)uctuation-dissipation theorem (FDT) to the OHSS with the requirement of ful(cid:28)lling the Onsager’s reciprocal relations ((cid:29)uctuating hydrodynamics), is erroneous. The reason is that the (cid:29)ux, changing the dynamics and initial values of the (cid:29)uctuations, violates the detailed balance existing in equilibrium. This is demonstrated by the example of the Mandelstam problem on (cid:29)uctuations in a medium with a heat (cid:29)ux. For this problem, the structure dynamic factor is calculated for an isotropic solid and a liquid. The loss of time symmetry by the correlation functions of (cid:29)uctuations and the asymmetry of their spectral representations in this problem is due to the spatial temperature variation, which determines the (cid:29)ux. In order to show the generality of this result for all OHSS with spatial heterogeneity, the Kelvin problem on thermal (cid:29)uctuations of the interface displacements between two liquids is also considered. The upper moving liquid has velocity potential changes as the temperature in the Mandelstam problem. Reciprocal relations for both the Mandelstam and the Kelvin problems are pointed out","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"76 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86317064","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}
{"title":"Electron–hole exchange interaction in a spherical quantum dot with regard material deformation and polarization charges","authors":"R. Leshko, I. V. Bilynskyi, O. V. Leshko","doi":"10.30970/jps.26.1702","DOIUrl":"https://doi.org/10.30970/jps.26.1702","url":null,"abstract":"","PeriodicalId":43482,"journal":{"name":"Journal of Physical Studies","volume":"10 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91145895","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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