Turkish Journal of Physics最新文献_第8页

The calculation of total fragment excitation energy for photofission of Uranium isotopes 铀同位素光裂变总碎片激发能的计算

IF 2.1

Turkish Journal of Physics Pub Date : 2020-08-31 DOI: 10.3906/fiz-1912-11

M. Jamiati, P. Mehdipour Kaldiani

引用次数: 3

Oncurrent-voltage and capacitance-voltage characteristics of metal-semiconductor contacts 金属半导体触点的电流-电压和电容-电压特性

IF 2.1

Turkish Journal of Physics Pub Date : 2020-08-31 DOI: 10.3906/fiz-2007-11

A. Turut

引用次数: 76

Weak deflection angle of black-bounce traversable wormholes usingGauss–Bonnet theorem in the dark matter medium 暗物质介质中利用Gauss–Bonnet定理研究可穿越黑洞的弱偏转角

IF 2.1

Turkish Journal of Physics Pub Date : 2020-08-24 DOI: 10.3906/fiz-2008-11

A. Övgün

引用次数: 44

Optimization of collection optics for maximum fidelity in entangled photon sources 纠缠光子源中最大保真度的收集光学优化

IF 2.1

Turkish Journal of Physics Pub Date : 2020-07-14 DOI: 10.3906/fiz-2007-15

K. Durak

{"title":"Optimization of collection optics for maximum fidelity in entangled photon sources","authors":"K. Durak","doi":"10.3906/fiz-2007-15","DOIUrl":"https://doi.org/10.3906/fiz-2007-15","url":null,"abstract":"In this report the decoherence sources for entangled photons created by spontaneous parametric down conversion phenomenon is studied. The phase and spatial distinguishability of photon pairs from orthogonal crystals reduce the maximum achievable entanglement fidelity. Carefully chosen compensation crystals are used to erase the phase and spatial traces of down conversion origins. Emission angle of photon pairs also leads to optical path difference and resulting in phase distinguishability. A realistic scenario is numerically modelled, where the photon pairs with nonzero emission angle gather a phase difference. These pairs can still be collected and manipulated for practical use but the collection optics adds upon the phase difference. Two commercially available optics for collection; aspheric and achromatic lenses are compared. The numerical simulation results are compared with the experimental results to validate the built model for predicting the maximum achievable entanglement fidelity. The results indicate that the fidelity can be accurately estimated with the presented model by inserting the experimental parameters to it. The study is expected to be very useful for preparation and optimization of entangled photon pair sources in critical phase-matching configuration.","PeriodicalId":46003,"journal":{"name":"Turkish Journal of Physics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46158186","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

Pseudoscalar form factors of the∆(1232)in Baryon Chiral Perturbation Theory 重子手性微扰理论中∆（1232）的伪标量形式因子

IF 2.1

Turkish Journal of Physics Pub Date : 2020-06-22 DOI: 10.3906/fiz-2002-22

Y. Ünal

引用次数: 0

Investigation of some nuclear structure properties of213Bi,201Tl,188Re,186Re,133Xe,131I,125I,123I,111In,94Tc,90Y,67Ga,67Cu,62Cu,61Cu,55Co, and48Vnuclei used in SPECT in axial deformation 213bi、201Tl、188Re、186Re、133Xe、131I、125I、123I、111In、94Tc、90Y、67Ga、67Cu、62Cu、61Cu、55Co和48v核在SPECT轴向变形中的部分核结构性能研究

IF 2.1

Turkish Journal of Physics Pub Date : 2020-06-22 DOI: 10.3906/fiz-2001-3

O. Artun

引用次数: 1

Field-free quantum-spin-1/2 XXZ model in three-dimensions:phases, phase transitions, and phase diagrams by renormalization group theory 三维无场量子自旋1/2 XXZ模型：相、相变和重正化群论相图

IF 2.1

Turkish Journal of Physics Pub Date : 2020-06-22 DOI: 10.3906/fiz-2002-24

Ozan S. Sarıyer

引用次数: 2

On-chip quantum opticsand integrated optomechanics 片上量子光学与集成光力学

IF 2.1

Turkish Journal of Physics Pub Date : 2020-06-01 DOI: 10.3906/fiz-2004-20

D. Hoch, T. Sommer, S. Müller, M. Poot

引用次数: 3

Local vibrational modes of natural isotopes of substitutional oxygen in CdTe CdTe中取代氧天然同位素的局域振动模式

IF 2.1

Turkish Journal of Physics Pub Date : 2020-06-01 DOI: 10.3906/fiz-1911-14

E. Tarhan, A. Ramdas

{"title":"Local vibrational modes of natural isotopes of substitutional oxygen in CdTe","authors":"E. Tarhan, A. Ramdas","doi":"10.3906/fiz-1911-14","DOIUrl":"https://doi.org/10.3906/fiz-1911-14","url":null,"abstract":"We investigated the localized vibrational modes LVM of natural oxygen containing $^{16}$O, $^{17}$O, and $^{18}$O isotopes at a substitutional tellurium site in cadmium telluride using infrared absorption spectroscopy at cryogenic temperatures. The main absorption peak observed at 350 cm$^{-1, }$was formerly attributed to a fundamental LVM mode $nu _{0} $ of oxygen at a tellurium site. The relatively weak absorption peaks observed at 331 cm$^{-1, }$and 340 cm$^{-1, }$are assigned as the same $nu_{0}$ mode of the $^{17}$O and $^{18}$O isotopes, respectively, based on their relative intensities and spectral positions. The spectral positions were confirmed with theoretical calculations using a linear chain model where the peak position at 350 cm$^{-1}$ was taken as the reference for the $^{16}$O isotope. From a least square analysis of the observed peak positions we were able to calculate the force constants from perturbation theory. A Lorentzian line shape analysis of each $nu_{0}$ absorption peak, considering the effects of isotopic mass and natural abundance variations of the host Cd atoms, was also carried out to further confirm their assignments. Reasonably good line shape fittings were obtained for $nu _{0}$ modes of all isotopes of oxygen.","PeriodicalId":46003,"journal":{"name":"Turkish Journal of Physics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41917296","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: 3

Prediction of standard enthalpies of formation of boron nitride nanocones 氮化硼纳米锥标准生成焓的预测

IF 2.1

Turkish Journal of Physics Pub Date : 2020-03-01 DOI: 10.3906/fiz-1908-7

F. Shojaie

{"title":"Prediction of standard enthalpies of formation of boron nitride nanocones","authors":"F. Shojaie","doi":"10.3906/fiz-1908-7","DOIUrl":"https://doi.org/10.3906/fiz-1908-7","url":null,"abstract":"Prediction of the standard enthalpy of formation ΔfH0298 of boron nitride nanocone BNNCs structures with disclination angles 60°, 120°, and 180°is recommended to be performed by the isodesmic reaction approach. NH3, BH3, and N2H4 were selected as key reference compounds. In order to calculate ΔfH0298 of nanocones, we must first calculate the enthalpies of nanocone rings at their apexes. For this purpose, ΔfH0298 values of 40 different structures, such as boron, nitrogen, and hydrogen compounds, have been calculated by combining Gaussian-4 G4 theory calculations with the isodesmic and other balanced reactions approach. At each stage of the calculations, the previously estimated enthalpies of formation of nanocones were used as reference points for new molecules in the isodesmic and other balanced reactions. The results of enthalpies of formation of reference compounds were then used as reference values to estimate the enthalpy of formation of rings of BNNCs at their apexes. Finally, enthalpies of formation of BNNCs with disclination angles of 60°, 120°, and 180°and cone heights of 1-5 A, 3-7 A, and 4-8 A were calculated. The results show that the reactions are highly exothermic. An increase in cone height causes the enthalpy of formation of boron nitride nanocone structures to become more negative.","PeriodicalId":46003,"journal":{"name":"Turkish Journal of Physics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45195254","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