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Bulletin of the Lebedev Physics Institute最新文献

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Self-Assembly of Particles of a Colloidal Solution of Nanostructured Carbon in Ethanol during Vertical Deposition on a Quartz Substrate 纳米结构碳在乙醇中的胶体溶液在石英衬底上垂直沉积过程中的自组装
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624601080
I. V. Moryakov, Z. A. Zakletsky, D. V. Malakhov, A. M. Anpilov, A. S. Konkova, S. V. Kuznetsov, A. A. Eriskin, N. G. Gusein-zade
{"title":"Self-Assembly of Particles of a Colloidal Solution of Nanostructured Carbon in Ethanol during Vertical Deposition on a Quartz Substrate","authors":"I. V. Moryakov,&nbsp;Z. A. Zakletsky,&nbsp;D. V. Malakhov,&nbsp;A. M. Anpilov,&nbsp;A. S. Konkova,&nbsp;S. V. Kuznetsov,&nbsp;A. A. Eriskin,&nbsp;N. G. Gusein-zade","doi":"10.3103/S1068335624601080","DOIUrl":"10.3103/S1068335624601080","url":null,"abstract":"<p>We report an experimental study of self-assembly processes that occur during the evaporation of a colloidal solution of nanostructured carbon in ethanol during vertical deposition of nanoparticles on a quartz substrate. The effect of the pulling speed and the angle at which the substrate is fixed on the structure of the carbon coatings formed on the surface of the samples is discussed. The fabricated nanocarbon films are analyzed in detail. Optimal conditions for the formation of the most uniform spatial distribution of nanoparticles and their agglomerates over the surface of quartz substrates are determined.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"474 - 481"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transmission Electron Microscopy of InGaAs/GaAs Quantum Dots Grown in a Bi Vapor Flow Bi气相流中生长InGaAs/GaAs量子点的透射电镜研究
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624601067
I. N. Trunkin, I. P. Kazakov
{"title":"Transmission Electron Microscopy of InGaAs/GaAs Quantum Dots Grown in a Bi Vapor Flow","authors":"I. N. Trunkin,&nbsp;I. P. Kazakov","doi":"10.3103/S1068335624601067","DOIUrl":"10.3103/S1068335624601067","url":null,"abstract":"<p>Transmission electron microscopy is used to study the formation of InGaAs/GaAs quantum dots by molecular beam epitaxy under the influence of a Bi vapor flow on the growth surface at different temperatures of the GaAs substrate. Mixed-dimensional nanostructures (0D/2D) are found. Energy-dispersive X-ray spectroscopy demonstrates that Bi acts as a surfactant and is not trapped by the growing layers.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"482 - 486"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A New Method for Producing Amorphous Silicon Films with a Fano Resonance 一种制备范诺共振非晶硅薄膜的新方法
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624600785
N. N. Melnik, V. V. Tregulov, V. S. Khilov, N. V. Rybina, N. B. Rybin, D. S. Kostsov
{"title":"A New Method for Producing Amorphous Silicon Films with a Fano Resonance","authors":"N. N. Melnik,&nbsp;V. V. Tregulov,&nbsp;V. S. Khilov,&nbsp;N. V. Rybina,&nbsp;N. B. Rybin,&nbsp;D. S. Kostsov","doi":"10.3103/S1068335624600785","DOIUrl":"10.3103/S1068335624600785","url":null,"abstract":"<p>We report on a new method for producing amorphous silicon in which a Fano resonance is observed. The method involves treating a porous silicon film doped with boron with pulsed laser radiation. The results of studying the fabricated amorphous silicon films using Raman spectroscopy are presented.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"468 - 473"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laser-Induced Photoheating of an Aqueous Suspension of Titanium Nitride Nanoparticles under Irradiation with a Synchronized Scanning near-IR Laser Beam 同步扫描近红外激光束辐照下氮化钛纳米颗粒水悬浮液的激光诱导光加热
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S106833562460116X
A. A. Bubnov, V. A. Oleshchenko, V. Yu. Timoshenko
{"title":"Laser-Induced Photoheating of an Aqueous Suspension of Titanium Nitride Nanoparticles under Irradiation with a Synchronized Scanning near-IR Laser Beam","authors":"A. A. Bubnov,&nbsp;V. A. Oleshchenko,&nbsp;V. Yu. Timoshenko","doi":"10.3103/S106833562460116X","DOIUrl":"10.3103/S106833562460116X","url":null,"abstract":"<p>Dynamic photohyperthermia is a method based on synchronization of a moving fluid flow and a laser beam. In this paper, the method is simulated and experimentally tested for a flow of an aqueous suspension of titanium nitride (TiN) nanoparticles (NPs) irradiated with continuous-wave laser radiation in the spectral absorption region of the NPs. A model is constructed that takes into account optical and photothermal effects associated with TiN NPs, i.e., scattering, absorption, and heat exchange in water. A semiconductor laser diode with a wavelength of 808 nm and a power of 0.35 W is used for photoheating of an aqueous suspension of NPs. It is found that the magnitude of photoheating of the aqueous NP suspension flow increases with synchronization of the scanning laser beam and moving flow of TiN NPs.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"432 - 438"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of Medical Isotope Yield at an Accelerator-Driven System 加速器驱动系统中医用同位素产率的模拟
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624601870
A. V. Bagulya, V. M. Grichine, V. N. Ivanchenko, V. A. Ryabov, S. N. Filimonov
{"title":"Simulation of Medical Isotope Yield at an Accelerator-Driven System","authors":"A. V. Bagulya,&nbsp;V. M. Grichine,&nbsp;V. N. Ivanchenko,&nbsp;V. A. Ryabov,&nbsp;S. N. Filimonov","doi":"10.3103/S1068335624601870","DOIUrl":"10.3103/S1068335624601870","url":null,"abstract":"<p>We study a possibility of using an accelerator-driven system of the Prometheus proton therapy complex to obtain medical isotopes. The electronuclear setup is simulated using the Geant4 software package. The yield curves of the <sup>99</sup>Mo isotope are calculated, and the results of simulating a number of other isotopes are presented.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"487 - 491"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inelastic Cross Sections of Interaction of Relativistic Heavy Nuclei 相对论重核相互作用的非弹性截面
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624601705
A. V. Bagulya, V. M. Grichine, V. N. Ivanchenko, V. A. Ryabov, S. N. Filimonov
{"title":"Inelastic Cross Sections of Interaction of Relativistic Heavy Nuclei","authors":"A. V. Bagulya,&nbsp;V. M. Grichine,&nbsp;V. N. Ivanchenko,&nbsp;V. A. Ryabov,&nbsp;S. N. Filimonov","doi":"10.3103/S1068335624601705","DOIUrl":"10.3103/S1068335624601705","url":null,"abstract":"<p>The Geant4 software package is used to calculate hadronic and electromagnetic inelastic cross sections of interactions of relativistic heavy nuclei as functions of the center-of-mass energy per nucleon. It is shown that in the energy range of the NICA accelerator complex, inelastic collisions result from electromagnetic dissociation of colliding nuclei.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"458 - 462"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Verification of Angular Properties of a Divergent Pencil Beam of the Prometheus Therapeutic Facility 普罗米修斯治疗装置发散束的角度特性验证
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624601274
G. V. Merzlikin, N. A. Skotnikova, A. I. Adarova, A. E. Chernukha, A. N. Solovev, S. A. Ivanov, S. N. Koryakin, A. P. Kanavin, V. O. Saburov
{"title":"Verification of Angular Properties of a Divergent Pencil Beam of the Prometheus Therapeutic Facility","authors":"G. V. Merzlikin,&nbsp;N. A. Skotnikova,&nbsp;A. I. Adarova,&nbsp;A. E. Chernukha,&nbsp;A. N. Solovev,&nbsp;S. A. Ivanov,&nbsp;S. N. Koryakin,&nbsp;A. P. Kanavin,&nbsp;V. O. Saburov","doi":"10.3103/S1068335624601274","DOIUrl":"10.3103/S1068335624601274","url":null,"abstract":"<p>A method for determining angular characteristics of a spread of a pencil proton beam, associated with the nonuniform distribution of the initial momenta of particles, is examined. Considering this phenomenon is crucial when planning patient irradiation and conducting radiobiological experiments, because angular characteristics directly affect the size of the field during particle transport through air or other media. Experimental data are also compared with Monte Carlo simulations performed with the TOPAS MC software package using the obtained parameters. The results demonstrate good agreement and validate the described method.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"450 - 457"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurement of Effective (B_{s}^{0} to J{text{/}}psi K_{S}^{0}) Lifetime Using Run-II CMS Data 使用Run-II CMS数据测量有效(B_{s}^{0} to J{text{/}}psi K_{S}^{0})寿命
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624601079
Priyanka Sadangi, Sanjay Kumar Swain, S. Polikarpov
{"title":"Measurement of Effective (B_{s}^{0} to J{text{/}}psi K_{S}^{0}) Lifetime Using Run-II CMS Data","authors":"Priyanka Sadangi,&nbsp;Sanjay Kumar Swain,&nbsp;S. Polikarpov","doi":"10.3103/S1068335624601079","DOIUrl":"10.3103/S1068335624601079","url":null,"abstract":"<p>The effective lifetime for the decay <span>(B_{s}^{0} to J{text{/}}psi K_{S}^{0})</span> is reported using the data from <i>pp</i> collision at centre of mass energy <span>(sqrt s )</span> = 13 TeV recorded by CMS experiment at the LHC during 2016, 2017 and 2018. The data sample corresponds to an integrated luminosity of 140 fb<sup>–1</sup>. The measurement uses the two-dimensional unbinned maximum likelihood (UML) fit to <i>B</i>-invariant mass and the decay time to extract the observable. Effective lifetime is measured as 1.59 <span>( pm )</span> 0.07(stat) <span>( pm )</span> 0.03(syst) ps, which is in good agreement with the standard model prediction and stands as the most precise result to date.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"463 - 467"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Baryogenesis in the Early Matter Dominated Epoch 早期物质主导期的重子发生
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-12-26 DOI: 10.3103/S1068335624600815
Ki-Young Choi, Jongkuk Kim, Erdenebulgan Lkhagvadorj
{"title":"Baryogenesis in the Early Matter Dominated Epoch","authors":"Ki-Young Choi,&nbsp;Jongkuk Kim,&nbsp;Erdenebulgan Lkhagvadorj","doi":"10.3103/S1068335624600815","DOIUrl":"10.3103/S1068335624600815","url":null,"abstract":"<p>While thermal dark matter is created in the early Universe, nonthermal dark matter can be generated through Hawking radiation from primordial black hole (PBH). If the reannihilation process of the nonthermal dark matter violates B-number and CP-symmetry, successful baryogenesis can be obtained in the early Universe. Consequently, this model can explain both the correct relic density of dark matter and the observed relic density of baryon asymmetry in the Universe by employing an ultralight mass for PBH and a larger total annihilation cross section for TeV dark matter. This corresponding large annihilation cross section of dark matter would open the opportunity to search for them and to test this model in the indirect detection of dark matter.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"445 - 449"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Fiber-Optic Angular Displacement Sensor Based on Optical Microfibers and Its Calibration Method 基于光学微纤维的光纤角位移传感器及其校准方法
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2024-11-25 DOI: 10.3103/S1068335624601808
F. A. Egorov
{"title":"A Fiber-Optic Angular Displacement Sensor Based on Optical Microfibers and Its Calibration Method","authors":"F. A. Egorov","doi":"10.3103/S1068335624601808","DOIUrl":"10.3103/S1068335624601808","url":null,"abstract":"<p>A fiber-optic angular-displacement sensor with a pendulum sensing element based on an optical microfiber with end and side directional radiation outputs, which serve, respectively, for measuring angular displacements and creating a transverse component of the light pressure force that leads to a deflection of the pendulum from the local vertical direction. A method of remote calibration and an algorithm for the sensor operation are proposed, which provide the possibility of calibration without violating the measurement mode. The method is based on the laser excitation of forced resonant oscillations of a pendulum–optical microfiber under the action of a transverse light-pressure force and the comparison of the resulting maximum values of the sensor output signals with the reference amplitude values of the angular deflections of the optical microfiber, which were calculated within the framework of the model of an elastic thin cantilever rod with a load at its end located in the Earth’s gravity field. The results obtained in this study and the approaches outlined in it may serve as the basis for creating new types of fiber-optic sensors characterized by a long service life and highly stable metrological indicators, which can be used, e.g., in systems for monitoring the technical conditions of construction structures and antenna mast systems, in systems of angular orientation and stabilization of platforms, etc.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 7 supplement","pages":"S572 - S580"},"PeriodicalIF":0.6,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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