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Bulletin of the Lebedev Physics Institute最新文献

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Investigation of Nanoscale Electronic Properties of Undoped InAs/GaSb Superlattice by Spreading Resistance Microscopy 未掺杂InAs/GaSb超晶格的纳米级电子性质研究
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624601985
D. E. Sviridov
{"title":"Investigation of Nanoscale Electronic Properties of Undoped InAs/GaSb Superlattice by Spreading Resistance Microscopy","authors":"D. E. Sviridov","doi":"10.3103/S1068335624601985","DOIUrl":"10.3103/S1068335624601985","url":null,"abstract":"<p>Using spreading resistance microscopy (SRM) under atmospheric conditions, we demonstrate a stable contrast of the electrical properties on the cleaved cross-section of an undoped InAs/GaSb type-II superlattice with a period of 7.5 nm. It is shown that this contrast is a consequence of the difference in the conductivity of the InAs and GaSb layers of the superlattice. A simple and effective method is proposed for monitoring the structure and electron‒hole subsystem of InAs/GaSb superlattices used in modern IR photodetectors.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"596 - 600"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108162","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
Sensitivity of νGeN Experiment to Magnetic Moment of Reactor Antineutrinos νGeN实验对反应堆反中微子磁矩的灵敏度
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624601675
A. D. Bystryakov, G. D. Ignatov, A. M. Konovalov, A. V. Lubashevskiy, D. V. Ponomarev, N. A. Skrobova, for the νGeN collaboration
{"title":"Sensitivity of νGeN Experiment to Magnetic Moment of Reactor Antineutrinos","authors":"A. D. Bystryakov,&nbsp;G. D. Ignatov,&nbsp;A. M. Konovalov,&nbsp;A. V. Lubashevskiy,&nbsp;D. V. Ponomarev,&nbsp;N. A. Skrobova,&nbsp;for the νGeN collaboration","doi":"10.3103/S1068335624601675","DOIUrl":"10.3103/S1068335624601675","url":null,"abstract":"<p>The νGeN experimental setup, with a low-threshold germanium spectrometer as its basic element, is deployed at Unit 3 of the Kalinin Nuclear Power Plant, at a distance of 11 m from the centre of the reactor core. The experiment aims to observe coherent elastic scattering of neutrinos off germanium nuclei, as well as to search for antineutrino electromagnetic properties. This paper presents an estimate of νGeN sensitivity to the antineutrino magnetic moment based on the 98 kg day reactor-OFF dataset. The expected limit is 5.3 × 10<sup>−11</sup> μ<sub>B</sub> at the 90% confidence level for the exposition of 198 kg day with the reactor ON and 98 kg day with the reactor OFF. The projected sensitivity for the 1100 kg day reactor-ON dataset is 2.6 × 10<sup>−11</sup> μ<sub>B</sub>.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"508 - 514"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108200","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
Light Absorption and Scattering Spectra of Nanoparticles with a Bimetallic Au/Ag Core and an Outer Shell with Two J-Bands of Molecular Aggregates 具有双金属金/银核和双j带分子聚集体外壳的纳米粒子的光吸收和散射光谱
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624602103
S. S. Moritaka, A. V. Mekshun, V. S. Lebedev
{"title":"Light Absorption and Scattering Spectra of Nanoparticles with a Bimetallic Au/Ag Core and an Outer Shell with Two J-Bands of Molecular Aggregates","authors":"S. S. Moritaka,&nbsp;A. V. Mekshun,&nbsp;V. S. Lebedev","doi":"10.3103/S1068335624602103","DOIUrl":"10.3103/S1068335624602103","url":null,"abstract":"<p>We report our results on light absorption and scattering cross sections of composite spherical nanoparticles with a bimetallic core and an outer shell of molecular aggregates of cyanine dyes exhibiting two excitonic resonances. Calculations have been performed within the framework of the extended Mie theory by taking into account the frequency-dependent and size-dependent dielectric functions of gold and silver. It is shown that for such three-layer particles, a specific regime of strong plasmon-exciton coupling is achieved, when the induced transparency effect is manifested simultaneously at two different wavelengths. The spectral distance between two identified dips of induced transparency turns out to be 150 nm.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"543 - 549"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108207","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
Structure of the Current at Electric Explosion of Thin Conductors 薄导体电爆炸时的电流结构
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624601912
A. G. Mozgovoy, A. V. Oginov, I. N. Tilikin, K. V. Shpakov
{"title":"Structure of the Current at Electric Explosion of Thin Conductors","authors":"A. G. Mozgovoy,&nbsp;A. V. Oginov,&nbsp;I. N. Tilikin,&nbsp;K. V. Shpakov","doi":"10.3103/S1068335624601912","DOIUrl":"10.3103/S1068335624601912","url":null,"abstract":"<p>The results of experiments on measuring the magnetic field from the azimuthal component of the current during the explosion of thin wires in high-current generators are presented. The discharge was excited by high-voltage pulses of 20 kV, 500 ns, with current up to 8 kA. Laser, X-ray tenegrams from other similar experiments are given. An assumption is made that the appearance of strata in such discharges is caused by the appearance of the spiral component of the current in the discharge, which leads to the splitting of the plasma column of the discharge into strata under the action of the Ampere forces between the resulting current coils.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"562 - 567"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108206","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
Galactic Center Gamma-Ray Excess As Imprint of Dark Matter 银河系中心伽马射线过剩作为暗物质的印记
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624602000
V. V. Burdyuzha
{"title":"Galactic Center Gamma-Ray Excess As Imprint of Dark Matter","authors":"V. V. Burdyuzha","doi":"10.3103/S1068335624602000","DOIUrl":"10.3103/S1068335624602000","url":null,"abstract":"<p>Probably, annihilation of atoms from magnetic monopoles (2.4 GeV) and their transitions in the Lyman series (1.8, 2.1, and 2.25 GeV) could result in a gamma-ray excess in our galactic center, which was observed by the Fermi observatory. Monopoles of GeV energies can form in the magnetospheres of magnetars and be blown out of them. At the galactic scale, atoms from magnetic monopoles (<i>g</i><sup>+</sup><i>g</i><sup>‒</sup>) are part of dark matter.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"500 - 502"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108271","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
Current Solitons in a Nonlinear Transmission Line 非线性传输线中的电流孤子
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S106833562460195X
F. M. Trukhachev, N. V. Gerasimenko, M. M. Vasiliev, O. F. Petrov
{"title":"Current Solitons in a Nonlinear Transmission Line","authors":"F. M. Trukhachev,&nbsp;N. V. Gerasimenko,&nbsp;M. M. Vasiliev,&nbsp;O. F. Petrov","doi":"10.3103/S106833562460195X","DOIUrl":"10.3103/S106833562460195X","url":null,"abstract":"<p>Electric currents arising in a nonlinear transmission line during the propagation of an electromagnetic KdV soliton are analyzed. An analytical expression for calculating the current soliton is obtained. It is shown that it has a classical profile, which in the approximation of small amplitudes is described by the soliton solution of the KdV equation. The voltage profiles between the ends of a section of one of the line conductors are also calculated; they are shown to have the form of symmetric bipolar pulses.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"576 - 582"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108209","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
Spectral Luminescent Method for Determining the Degree of Milk Pasteurization 光谱发光法测定牛奶巴氏灭菌程度
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624602012
S. E. Dimitrieva, A. N. Lobanov, L. L. Chaikov, S. V. Krivokhizha
{"title":"Spectral Luminescent Method for Determining the Degree of Milk Pasteurization","authors":"S. E. Dimitrieva,&nbsp;A. N. Lobanov,&nbsp;L. L. Chaikov,&nbsp;S. V. Krivokhizha","doi":"10.3103/S1068335624602012","DOIUrl":"10.3103/S1068335624602012","url":null,"abstract":"<p>We propose a simple noncontact spectral method for determining the presence or absence of milk pasteurization. The method is based on the pasteurization temperature dependence of luminescence spectra of milk excited by ultraviolet radiation in the wavelength range of 300‒420 nm.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"607 - 611"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108197","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 the Cross-Sections for the Formation of Lanthanum Radioisotopes in Proton Induced Reactions on Ba-135 Nuclei up to 30 MeV 30 MeV的Ba-135核质子诱导反应中镧放射性同位素形成截面的测量
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624601869
I. A. Khomenko, E. S. Kormazeva, V. I. Novikov, R. A. Aliev
{"title":"Measurement of the Cross-Sections for the Formation of Lanthanum Radioisotopes in Proton Induced Reactions on Ba-135 Nuclei up to 30 MeV","authors":"I. A. Khomenko,&nbsp;E. S. Kormazeva,&nbsp;V. I. Novikov,&nbsp;R. A. Aliev","doi":"10.3103/S1068335624601869","DOIUrl":"10.3103/S1068335624601869","url":null,"abstract":"<p>The experimental results of irradiation of the isotopically enriched [<sup>135</sup>Ba]BaCO<sub>3</sub> targets by protons with an initial energy of 30 MeV are presented. The cross-sections of lanthanum and barium radioisotopes formed as a result of <sup>135</sup>Ba(p, x) nuclear reactions were measured and compared with theoretical data for the first time. The possibility of production of <sup>135</sup>La and <sup>133</sup>La for their further medical use was shown.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"515 - 518"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108199","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
Dynamics of Gas and Dust during Interaction of Diffuse Clouds with a Shock Wave 漫射云与激波相互作用过程中气体和尘埃的动力学
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624601560
S. Yu. Dedikov, E. O. Vasiliev
{"title":"Dynamics of Gas and Dust during Interaction of Diffuse Clouds with a Shock Wave","authors":"S. Yu. Dedikov,&nbsp;E. O. Vasiliev","doi":"10.3103/S1068335624601560","DOIUrl":"10.3103/S1068335624601560","url":null,"abstract":"<p>The survival efficiency of dust during the interaction of dusty interstellar clouds with shock wave was studied. We have found that in the adiabatic destruction of small clouds, the dust grains belonging to the cloud are separated by size along the cloud motion: large dust grains remain far behind the gaseous clumps of the cloud, and small grains are entrained by the cloud. In large radiatively cooled clouds, a significant part of dust is contained and saved inside dense cold clumps of the cloud independently of the grain size.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"493 - 499"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108202","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
Charge Transfer Processes in Electron Impact Induced Ar + Xe+ and Kr + Xe+ Systems 电子碰撞诱导Ar + Xe+和Kr + Xe+体系的电荷转移过程
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-02-02 DOI: 10.3103/S1068335624602140
K. S. Kislov
{"title":"Charge Transfer Processes in Electron Impact Induced Ar + Xe+ and Kr + Xe+ Systems","authors":"K. S. Kislov","doi":"10.3103/S1068335624602140","DOIUrl":"10.3103/S1068335624602140","url":null,"abstract":"<p>We report investigation of the resonant process of electron impact induced charge transfer in the inert gas systems Ar + Xe<sup>+</sup> and Kr + Xe<sup>+</sup>. Along with this, the reaction of the formation of charge-transfer ions XeRg<sup>+</sup> in triple collisions Rg + Xe<sup>+</sup> + <i>e</i>, occurring due to nonadiabatic transitions, is studied. These processes are compared with the efficiency of dissociative electron impact excitation of ArXe<sup>+</sup> and KrXe<sup>+</sup> ions, accompanied by the formation of Ar<sup>+</sup> and Kr<sup>+</sup> ions, under conditions of plasma equilibrium in nuclear motion.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12","pages":"568 - 575"},"PeriodicalIF":0.6,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108203","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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