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Bulletin of the Lebedev Physics Institute最新文献

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Fabrication of Silicon Structures with Specified Fano Resonance Characteristics 具有特定范诺共振特性的硅结构的制造
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/S1068335624600797
N. N. Melnik, V. V. Tregulov, G. N. Skoptsova, D. S. Kostsov
{"title":"Fabrication of Silicon Structures with Specified Fano Resonance Characteristics","authors":"N. N. Melnik,&nbsp;V. V. Tregulov,&nbsp;G. N. Skoptsova,&nbsp;D. S. Kostsov","doi":"10.3103/S1068335624600797","DOIUrl":"10.3103/S1068335624600797","url":null,"abstract":"<p>We study the effect of technological parameters on the characteristics of the Fano resonance in semiconductor structures formed on silicon single-crystal substrates using thermal diffusion of boron. The Fano resonance is investigated using Raman spectroscopy. It is shown that the formation of porous silicon films on the surface of a single-crystal substrate expands the possibilities of fabricating structures with specified Fano resonance parameters, compared to samples without a porous film.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"427 - 431"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890491","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 CP Violation in D0 Meson Decays at the CMS Experiment 在CMS实验中测量D0介子衰变中的CP破坏
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/S1068335624600682
V. S. Sergeychik, S. M. Polikarpov
{"title":"Measurement of CP Violation in D0 Meson Decays at the CMS Experiment","authors":"V. S. Sergeychik,&nbsp;S. M. Polikarpov","doi":"10.3103/S1068335624600682","DOIUrl":"10.3103/S1068335624600682","url":null,"abstract":"<p>The paper describes the search results for CP violation in the <i>D</i><sup>0</sup> → <span>(K_{S}^{0}K_{S}^{0})</span> decay. The analysis was performed using the proton–proton collision data with centre-of-mass energy of <span>(sqrt s )</span> = 13 TeV, recorded by the CMS experiment at the Large Hadron Collider. The analyzed data sample contains about 10<sup>10</sup> events associated with production of charm hadrons, which allows performing precise measurements. The measured CP violation parameter is <i>A</i><sub>CP</sub> (<i>D</i><sup>0</sup> → <span>(K_{S}^{0}K_{S}^{0})</span>) = (6.2 ± 3.1 (stat.) ± 0.2 (syst.) ± 0.8 (<i>A</i><sub>CP</sub> (<i>D</i><sup>0</sup> → <span>(K_{S}^{0})</span>π<sup>+</sup>π<sup>−</sup>))%, where the last uncertainty is due to the uncertainty in the reference channel asymmetry <i>A</i><sub>CP</sub> (<i>D</i><sup>0</sup> → <span>(K_{S}^{0})</span>π<sup>+</sup>π<sup>−</sup>). The obtained results are consistent with no CP violation in the studied decay. This analysis is the first measurement of CP violation in charm sector at the CMS experiment.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 11","pages":"439 - 444"},"PeriodicalIF":0.6,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.3103/S1068335624600682.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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
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