TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)最新文献

{"title":"Analysis of a newly composed Cu-Al-Mn SMA showing acute SME characteristics","authors":"O. Karaduman, C. Canbay, N. Ünlü, İ. Özkul","doi":"10.1063/1.5135437","DOIUrl":"https://doi.org/10.1063/1.5135437","url":null,"abstract":"In this research study, the Cu-based shape memory alloy (SMA) with a new 57.53Cu-37.78Al-4.69Mn (at%) composition was prepared by arc melting. The alloy obtained as-castingot was homogenized at 900 °C and right after quenched in iced-brine water to get the formation of β1’ martensite structure in the alloy, which is a very common process. Then the samples cut from that ingot were examined by taking calorimetric and microstructural measurements. The results of the differential calorimetric analysis (DSC) measurements as cycled heating/cooling hysteresis curves showed the characteristic back and forward martensitic phase transition peaks, such that, they have become very deep (or high) and sharp (i.e. the temperature gaps between start and finish points of both way transitions are narrow). These indicated that this newly composed SMA has a fast and acute shape change ability. Thermodynamical parameters like entropy change values of transitions and hysteresis temperature were calculated by using DSC data. Differential thermal analysis (DTA) measurement of the alloy was also carried out and this thermographed the high temperature behavior of the alloy. The XRD analysis of the alloy sample at room temperature provided the microstructural information as diffraction peaks and corresponding miller indices which alluded the existing martensite forms in the alloy. The valence electron concentration (per atom) of the alloy was also determined. From all mutually reinforcing results, it was concluded that the SMA with thisunprecedented composition can be used as one of the alternatives in many SMA applications.In this research study, the Cu-based shape memory alloy (SMA) with a new 57.53Cu-37.78Al-4.69Mn (at%) composition was prepared by arc melting. The alloy obtained as-castingot was homogenized at 900 °C and right after quenched in iced-brine water to get the formation of β1’ martensite structure in the alloy, which is a very common process. Then the samples cut from that ingot were examined by taking calorimetric and microstructural measurements. The results of the differential calorimetric analysis (DSC) measurements as cycled heating/cooling hysteresis curves showed the characteristic back and forward martensitic phase transition peaks, such that, they have become very deep (or high) and sharp (i.e. the temperature gaps between start and finish points of both way transitions are narrow). These indicated that this newly composed SMA has a fast and acute shape change ability. Thermodynamical parameters like entropy change values of transitions and hysteresis temperature were calculated by using DSC data. Di...","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125283388","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":"A study on the measurement of molecular scattering differential cross sections of some potassium compounds","authors":"Burcu Akça","doi":"10.1063/1.5135423","DOIUrl":"https://doi.org/10.1063/1.5135423","url":null,"abstract":"In the present work, molecular scattering differential cross sections of 59.54 keV γ-rays of Am-241 have been measured for some potassium compounds (KH2PO4, KNO3, K2S2O8, KOH, K2HPO4, K2SO4, KCl, KIO3, and KI) at 3.38 Ao−1 photon-momentum transfer. The experiment has been made by using a Si(Li) detector and EDXRFS (energy dispersive X-ray fluorescence system). The experimental results have been compared with non-relativistic (NRT) and relativistic (RT) theoretical values.In the present work, molecular scattering differential cross sections of 59.54 keV γ-rays of Am-241 have been measured for some potassium compounds (KH2PO4, KNO3, K2S2O8, KOH, K2HPO4, K2SO4, KCl, KIO3, and KI) at 3.38 Ao−1 photon-momentum transfer. The experiment has been made by using a Si(Li) detector and EDXRFS (energy dispersive X-ray fluorescence system). The experimental results have been compared with non-relativistic (NRT) and relativistic (RT) theoretical values.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125458182","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":"The impact of crystal length on calorimeter energy resolution","authors":"A. Saad, F. Kocak, Z. Kırca","doi":"10.1063/1.5135443","DOIUrl":"https://doi.org/10.1063/1.5135443","url":null,"abstract":"Lutetium-yttrium oxyorthosilicate (LYSO) crystal scintillators were originally developed for medical applications. Owing to their high density, small Moliere radius, fast response, and high radiation hardness, LYSO crystals have also suitable for future homogeneous electromagnetic calorimeters. Due to these features, LYSO is considered to be used for the electromagnetic calorimeter part of the Turkish Accelerator Center Particle Factory (TAC-PF) detector. In this research, by employing the GEANT4 toolkit program, we simulated a set of crystal, and their energy resolutions were obtained for different lengths at the energy range of 50 MeV - 2 GeV. Depending on the crystal length, contributions to the constant term of the energy resolution were investigated.Lutetium-yttrium oxyorthosilicate (LYSO) crystal scintillators were originally developed for medical applications. Owing to their high density, small Moliere radius, fast response, and high radiation hardness, LYSO crystals have also suitable for future homogeneous electromagnetic calorimeters. Due to these features, LYSO is considered to be used for the electromagnetic calorimeter part of the Turkish Accelerator Center Particle Factory (TAC-PF) detector. In this research, by employing the GEANT4 toolkit program, we simulated a set of crystal, and their energy resolutions were obtained for different lengths at the energy range of 50 MeV - 2 GeV. Depending on the crystal length, contributions to the constant term of the energy resolution were investigated.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123861033","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":"Theoretical and experimental investigation of 1H, 13C NMR and nJ(C, H) coupling constants for 2-substituted derivatives of diphenylpyraline","authors":"Ş. Alpaslan, S. Sagdinc","doi":"10.1063/1.5135428","DOIUrl":"https://doi.org/10.1063/1.5135428","url":null,"abstract":"Diphenylpyraline is used to medicinal chemistry. The H1 antihistaminic agent diphenylpyraline and its 2-substituted derivatives are in general antimycobacterial potency. NMR spectroscopy has an enormous potential for investigating conformations and configurations in medicinal organic compounds. In this study, theoretical proton coupled and decoupled NMR spectra (13C and 1H) for 2-substituted derivatives of diphenylpyraline have been investigated using DFT/B3LYP method. Comparison between the experimental and the theoretical results indicates that the results of the density functional B3LYP method are able to provide satisfactory results for predicting NMR properties.Diphenylpyraline is used to medicinal chemistry. The H1 antihistaminic agent diphenylpyraline and its 2-substituted derivatives are in general antimycobacterial potency. NMR spectroscopy has an enormous potential for investigating conformations and configurations in medicinal organic compounds. In this study, theoretical proton coupled and decoupled NMR spectra (13C and 1H) for 2-substituted derivatives of diphenylpyraline have been investigated using DFT/B3LYP method. Comparison between the experimental and the theoretical results indicates that the results of the density functional B3LYP method are able to provide satisfactory results for predicting NMR properties.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124669479","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":"Effective measurement of the wavelength accuracy calibration by using Monte Carlo uncertainty calculation","authors":"M. Kilin, H. Tutunculer, S. Méric","doi":"10.1063/1.5135406","DOIUrl":"https://doi.org/10.1063/1.5135406","url":null,"abstract":"In this paper, a new effective wavelength calibration technique has been investigated and calculated for the calibration of different monochromator systems. Different calibration lamps have been tested effectively with respect to similar studies. Extended wavelength accuracy calibration has been made for the spectrophotometer systems, which have different grating with different spectral range. For each grating, different calibration lamps was used. Wavelength calibration over extended range has been possible by using orders of gratings. Integrating sphere usage has been a simpler way compared to conventional optical setups and a unique approach on uniformly transferring radiation of the calibration lamps to monochromator systems. This experimental setup, allows the correct wavelength of the radiation to reach entrance slit without causing optical aberrations. Many parameters have been analyzed in uncertainty measurements both standard uncertainty calculation method, which are based on the “Guide to the Ex...","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124555659","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":"Metamaterial inspired sensor for detection of engine lubricant oil condition","authors":"O. Altıntaş, M. Aksoy, E. Unal, M. Karaaslan","doi":"10.1063/1.5135408","DOIUrl":"https://doi.org/10.1063/1.5135408","url":null,"abstract":"A metamaterial (MTM) based sensor structure is proposed to determine engine lubricant condition at X band frequency regime. The resonator part of the structure is inspired electric LC resonator (ELC) type MTM which is highly used among the researchers. The sensing application is realized by benefiting the electrical properties of the lubricant samples. The dielectric characteristics of the clean and waste lubricant oils are measured by using a vector network analyzer and dielectric probe kit. The dielectric values are observed as about 2.35+j0.31 and 2.45+j0.34 for clean and waste oil samples, respectively. After, the ELC resonator based sensor structure are designed by including a sensor layer at the back. Finally, transmission resonance frequencies and phases are measured for both samples. The transmission coefficients are obtained nearly zero at 8.572 GHz and 8.664 GHz. Hence, the proposed sensor structure can distinguish the clean and waste lubricant oil samples with about 100 MHz.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114291951","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":"Optical properties of SiO2/VO2/TiO2 nanostructures by computational optical model","authors":"M. Coşkun, Ö. Coşkun","doi":"10.1063/1.5135440","DOIUrl":"https://doi.org/10.1063/1.5135440","url":null,"abstract":"Vanadium dioxide (VO2) has drawn great attention as a thermochromic material for smart windows due to its unique temperature dependent metal-insulator transition (MIT) and corresponding tunable optical properties. In this study, MNPBEM, a Matlab toolbox, was used for simulation of the optical properties of a core/shell/shell nanostructure of SiO2/VO2/TiO2 by using a boundary element method (BEM). The light absorption of the proposed structure with varying core size and shells’ thicknesses were investigated. In this study, the luminous transmittance and solar transmittance modulation have been significantly improved by using the structure of 150 nm SiO2 core in diameter with a 60 nm thick inner shell VO2 and a 10 nm thick outer shell TiO2.Vanadium dioxide (VO2) has drawn great attention as a thermochromic material for smart windows due to its unique temperature dependent metal-insulator transition (MIT) and corresponding tunable optical properties. In this study, MNPBEM, a Matlab toolbox, was used for simulation of the optical properties of a core/shell/shell nanostructure of SiO2/VO2/TiO2 by using a boundary element method (BEM). The light absorption of the proposed structure with varying core size and shells’ thicknesses were investigated. In this study, the luminous transmittance and solar transmittance modulation have been significantly improved by using the structure of 150 nm SiO2 core in diameter with a 60 nm thick inner shell VO2 and a 10 nm thick outer shell TiO2.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121761452","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":"Comparison of gamma analysis in multiple static segment and sliding window techniques in nasopharyngeal radiotherapy","authors":"G. Inan, Vefa Gül, G. Yavas, Ç. Yavaş, R. Ogul","doi":"10.1063/1.5135454","DOIUrl":"https://doi.org/10.1063/1.5135454","url":null,"abstract":"The purpose of this study was to compare gamma an alysis by using portal dosimetry (PD) between static (SMLC) and dynamic (DMLC) intensity modulated radiation therapy (IMRT) techniques. Simultane I...","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123518341","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":"Fabrication of quaternary high temperature shape memory alloys","authors":"H. Ahmed, C. Canbay, İ. Özkul","doi":"10.1063/1.5135434","DOIUrl":"https://doi.org/10.1063/1.5135434","url":null,"abstract":"In today’s technology, the useful materials attract more attention for sustainable of energy sources. Shape memory alloys (SMAs) are one of these useful materials due to their unique properties as pseudoelasticity and shape recovery property. SMAs can be classified as Cu-based (Cu-Zn, Cu-Al and Cu-Sn), Iron-based and NiTi. The copper-based system is the most useful because of easy fabrication and low cost production. In these systems, there are two main phases; martensite low symmetric temperature phase and austenite the high temperature phase. So the SMA got certain characteristic temperature that each phase starts and ends from high temperature to low temperature. There are many applications of these alloys as aerospace, medical, automobile, petroleum industry, sensors, actuators, etc. The characteristic transformation temperatures, the thermodynamic parameters and structural features of shape memory alloys (SMAs) are sensitive to variations in alloy composition, so in this study, we searched the effect of additive elements on the characteristic transformation temperatures, thermodynamic parameters and structure of Cu-Al based SMAs. In this context, Cu–12.9Al–22.73Be-0.37Mn (at%) alloy and Cu–18.73Al–21.06Be–0.13Mn (at%) alloy were studied here as structural and thermodynamical. Upon thermal analyses, they were classified as HTSMA since the martensitic transformation temperatures for both alloy became above 100 °C. Also the martensite phases were detected in both alloys by XRD measurements at room temperature.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129641553","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":"Melting of 𝜌2 meson at extreme\u0000 temperatures","authors":"E. Sertbakan, J. Y. Süngü, A. Türkan, E. V. Veliev","doi":"10.1063/1.5135446","DOIUrl":"https://doi.org/10.1063/1.5135446","url":null,"abstract":"The thermal properties of the light tensor ρ2 meson with quantum numbers JPC = 2−− are studied at finite temperature. In our calculations, two-point Thermal QCD sum rules approach is employed including contributions up to operator dimension-5 of quark, gluon, and quark-gluon mix condensates. We present thermal effects on the main hadronic properties namely, mass and decay constant of the considered resonance in SU(3) nonet, which provides more knowledge about axial-tensor family for experiments. The non-perturbative treatments of the light quark dynamics results in mass spectra at zero temperature agree with available experimental data and thermal behavior of meson parameters can be tested in future experiments.The thermal properties of the light tensor ρ2 meson with quantum numbers JPC = 2−− are studied at finite temperature. In our calculations, two-point Thermal QCD sum rules approach is employed including contributions up to operator dimension-5 of quark, gluon, and quark-gluon mix condensates. We present thermal effects on the main hadronic properties namely, mass and decay constant of the considered resonance in SU(3) nonet, which provides more knowledge about axial-tensor family for experiments. The non-perturbative treatments of the light quark dynamics results in mass spectra at zero temperature agree with available experimental data and thermal behavior of meson parameters can be tested in future experiments.","PeriodicalId":233679,"journal":{"name":"TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35)","volume":"141 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129896458","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}