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Autler–Townes Effect of Autoionization Transition at Laser Separation of Lutetium Isotopes 激光分离镥同位素时的自电离转变的 Autler-Townes 效应
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040052
A. B. D’yachkov, A. A. Gorkunov, S. K. Kovalevich, A. V. Labozin, V. A. Firsov, S. V. Fomichev, G. O. Tsvetkov, V. Ya. Panchenko
{"title":"Autler–Townes Effect of Autoionization Transition at Laser Separation of Lutetium Isotopes","authors":"A. B. D’yachkov,&nbsp;A. A. Gorkunov,&nbsp;S. K. Kovalevich,&nbsp;A. V. Labozin,&nbsp;V. A. Firsov,&nbsp;S. V. Fomichev,&nbsp;G. O. Tsvetkov,&nbsp;V. Ya. Panchenko","doi":"10.1134/S0030400X24040052","DOIUrl":"10.1134/S0030400X24040052","url":null,"abstract":"<p>The splitting of the transition from a discrete to an autoionization state, used in a three-step photoionization scheme of lutetium 5<i>d</i>6<i>s</i><sup>2 2</sup><i>D</i><sub>3/2</sub>–5<i>d</i>6<i>s</i>6<i>p</i> <span>({}^{4}F_{{5/2}}^{^circ })</span>–5<i>d</i>6<i>s</i>7<i>s</i> <sup>4</sup><i>D</i><sub>3/2</sub>–(53375 cm<sup>–1</sup>)<span>(_{{1/2}}^{^circ })</span> has been studied. The splitting is proportional to the square root of the intensity, which corresponds to the Autler–Townes effect.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"345 - 352"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213923","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
Copper-Doped Carbon Nanoparticles as a Two-Modal Nanoprobe for Luminescent and Magnetic Resonance Imaging 掺铜碳纳米粒子作为发光和磁共振成像的双模式纳米探针
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040155
E. A. Stepanidenko, A. A. Vedernikova, S. O. Ondar, Z. F. Badrieva, E. A. Brui, M. D. Miruschenko, O. V. Volina, A. V. Koroleva, E. V. Zhizhin, E. V. Ushakova
{"title":"Copper-Doped Carbon Nanoparticles as a Two-Modal Nanoprobe for Luminescent and Magnetic Resonance Imaging","authors":"E. A. Stepanidenko,&nbsp;A. A. Vedernikova,&nbsp;S. O. Ondar,&nbsp;Z. F. Badrieva,&nbsp;E. A. Brui,&nbsp;M. D. Miruschenko,&nbsp;O. V. Volina,&nbsp;A. V. Koroleva,&nbsp;E. V. Zhizhin,&nbsp;E. V. Ushakova","doi":"10.1134/S0030400X24040155","DOIUrl":"10.1134/S0030400X24040155","url":null,"abstract":"<p>In this work, copper-doped carbon nanoparticles with emission in a wide spectral range and the ability to change the relaxation times of water protons during magnetic resonance imaging were fabricated. A high relaxivity value r1 = 0.92 mM<sup>–1</sup> s<sup>–1</sup> was achieved, which is the highest value of r1 for copper nanoparticles, to our knowledge. The suggested carbon nanoparticles are promising two-modal nanoprobes for bioimaging.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"409 - 415"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213932","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 and Measurement of Stroke in Piezoceramic Combs with a Decrease in Cross-Sectional Area of Control Elements 控制元件横截面积减小时压电陶瓷梳的冲程模拟与测量
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040179
V. V. Toporovsky, V. V. Samarkin, A. V. Kudryashov, I. V. Galaktionov, A. A. Panich, A. Yu. Malykhin
{"title":"Simulation and Measurement of Stroke in Piezoceramic Combs with a Decrease in Cross-Sectional Area of Control Elements","authors":"V. V. Toporovsky,&nbsp;V. V. Samarkin,&nbsp;A. V. Kudryashov,&nbsp;I. V. Galaktionov,&nbsp;A. A. Panich,&nbsp;A. Yu. Malykhin","doi":"10.1134/S0030400X24040179","DOIUrl":"10.1134/S0030400X24040179","url":null,"abstract":"<p>Numerical modeling of multilayer piezoactuators with a cross-sectional area of 2 × 2 mm was carried out. It was shown that when interdigitated switching is used in piezoactuators, a local redistribution of transverse strain maxima is observed, which leads to a decrease in the mechanical strength and reliability of control elements. Piezoceramic combs with identical linear dimensions were produced and the mechanical and electrical properties of the developed elements were measured. It was revealed that stroke at a control voltage of 300 V decreases from 4 to 1.5 μm when using the interdigitated switching method in comparison with multilayer actuators of larger cross-section due to a decrease in the effective polarization area of piezoactuators. Piezoceramic combs with wire commutation were manufactured, where the displacement at a control voltage of 300 V was 4.6–4.8 μm.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"421 - 425"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213933","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
Orbital Collapse of the 5g-Electrons in the Superheavy Elements of the 8th Period 第 8 周期超重元素中 5g 电子的轨道塌缩
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040180
I. I. Tupitsyn, I. M. Savelyev, Y. S. Kozhedub, M. Y. Kaygorodov, D. A. Glazov, N. K. Dulaev, A. V. Malyshev, V. M. Shabaev
{"title":"Orbital Collapse of the 5g-Electrons in the Superheavy Elements of the 8th Period","authors":"I. I. Tupitsyn,&nbsp;I. M. Savelyev,&nbsp;Y. S. Kozhedub,&nbsp;M. Y. Kaygorodov,&nbsp;D. A. Glazov,&nbsp;N. K. Dulaev,&nbsp;A. V. Malyshev,&nbsp;V. M. Shabaev","doi":"10.1134/S0030400X24040180","DOIUrl":"10.1134/S0030400X24040180","url":null,"abstract":"<p>The presence of the orbital collapse of the <i>g</i>-orbitals in the excited state of the atom with the nuclear charge number <i>Z</i> = 124 and in the ground state of the atom with <i>Z</i> = 125, which belong to the 8th period of the extended periodic table, is demonstrated. In both cases, the orbital collapse occurs within the same configuration when increasing the total angular momentum <i>J</i>, which characterizes the relativistic term of the atom in the <i>jj</i> coupling. All calculations are performed by means of the relativistic Dirac–Fock method.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"426 - 429"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213934","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
Investigation of the Optical Properties of Aminated Carbon Dots Based on Citric Acid and Ethylenediamine 研究基于柠檬酸和乙二胺的氨基化碳点的光学特性
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030135
I. V. Margaryan, A. M. Mitroshin, A. Yu. Dubavik, E. V. Kundelev
{"title":"Investigation of the Optical Properties of Aminated Carbon Dots Based on Citric Acid and Ethylenediamine","authors":"I. V. Margaryan,&nbsp;A. M. Mitroshin,&nbsp;A. Yu. Dubavik,&nbsp;E. V. Kundelev","doi":"10.1134/S0030400X24030135","DOIUrl":"10.1134/S0030400X24030135","url":null,"abstract":"<p>The most important parameter determining the efficiency of carbon dots as light absorbers in photocatalytic systems is the strength of their binding to the catalyst. It is rather difficult to estimate the contribution of this parameter of carbon dots to the overall efficiency of the photocatalytic system, since the post-synthetic modification of the surface of carbon dots is accompanied by a significant change in their optical and structural properties. In this work, we performed post-synthetic modification of the surface of carbon dots based on citric acid by amination with ethylenediamine molecules by activating the carboxyl groups of carbon dots with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide molecules. The use of this amination approach made it possible to change the charge of carbon dots without changing their main optical and structural properties, which can be further used to assess the contribution of the strength of their binding with Dubois-type molecular catalysts to the overall efficiency of the photocatalytic system.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"273 - 278"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227017","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
Monitoring of Localized Plasmon Resonance in an Inhomogeneous Ensemble of Silver Nanoparticles at the Boundary of Two Media 在两种介质边界监测银纳米粒子非均质组合中的局部等离子体共振
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030160
A. A. Starovoytov, A. A. Fandeev, I. Yu. Nikitin, I. A. Gladskikh, D. R. Dadadzhanov
{"title":"Monitoring of Localized Plasmon Resonance in an Inhomogeneous Ensemble of Silver Nanoparticles at the Boundary of Two Media","authors":"A. A. Starovoytov,&nbsp;A. A. Fandeev,&nbsp;I. Yu. Nikitin,&nbsp;I. A. Gladskikh,&nbsp;D. R. Dadadzhanov","doi":"10.1134/S0030400X24030160","DOIUrl":"10.1134/S0030400X24030160","url":null,"abstract":"<p>Optical properties of an inhomogeneous ensemble of plasmonic silver nanoparticles obtained by thermal vacuum deposition at the interface between two media as this interface moves relative to the nanoparticles themselves have been studied. The movement was carried out due to thermally stimulated diffusion of nanoparticles into the polystyrene layer and due to the deposition of an additional layer of quartz on a granular film with nanoparticles on a quartz substrate. The frequency shifts of the inhomogeneous plasmon resonance of nanoparticles moving through the interface was to about two tens of nanometers.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"290 - 295"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227018","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
Experimental Detection of Bleaching of Fresh Ice in the Optical Range near 0°C 0°C 附近光学范围内新冰漂白的实验检测
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040039
G. S. Bordonskiy, A. A. Gurulev, V. A. Kazantsev, D. V. Seredin
{"title":"Experimental Detection of Bleaching of Fresh Ice in the Optical Range near 0°C","authors":"G. S. Bordonskiy,&nbsp;A. A. Gurulev,&nbsp;V. A. Kazantsev,&nbsp;D. V. Seredin","doi":"10.1134/S0030400X24040039","DOIUrl":"10.1134/S0030400X24040039","url":null,"abstract":"<p>The results of laboratory measurements of the transparency of fresh ice blocks in the optical range in the temperature range from –15 to 0°C are presented. The studies were performed at two wavelengths in the visible range (at a wavelength of 535 nm) and the ultraviolet range (at a wavelength of 370 nm). We studied the ice of a natural fresh water body with a characteristic predominant spatial orientation of the main optical axis of the crystals. It has been established that when approaching a temperature of 0°, the sample becomes bleaching (decrease in attenuation). The effect occurs in the range –0.5–0°C. It is determined by the occurrence of plastic deformation due to thermal stresses caused by the initial stage of the ice-water phase transition. The bleaching in experiments with ice blocks ~10 cm thick was 3–25%. The results obtained are of interest for solving remote sensing problems, since melting ice is a widespread object due to its significant heat of phase transition. Previously, the effect of bleaching of fresh ice was also discovered in the microwave range when the temperature of the sample approached the phase transition point.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"333 - 338"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213921","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
Identification of Quantum Vortices in Momentum Space 动量空间量子漩涡的识别
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040118
N. V. Larionov, V. M. Molchanovskiy
{"title":"Identification of Quantum Vortices in Momentum Space","authors":"N. V. Larionov,&nbsp;V. M. Molchanovskiy","doi":"10.1134/S0030400X24040118","DOIUrl":"10.1134/S0030400X24040118","url":null,"abstract":"<p>The quantum vortices formed as a result of barrier-suppression ionization of a two-dimensional hydrogen atom by an ultrashort laser pulse are theoretically investigated. Using an analytical expression for the wave function of a photoelectron in the momentum representation, the probability flux density is investigated. In this case, both the standard definition of a flux and an alternative “symmetrical” one are used. The latter, due to the sensitivity to the phase of the wave function, makes it possible to identify quantum vortices in the momentum space.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"387 - 390"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213928","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
Photonic Crystals with an Arbitrary Number of Photonic Band Gaps Made of Porous Quartz with a Gradual Change in the Refractive Index 由折射率渐变的多孔石英制成的具有任意数量光子带隙的光子晶体
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040167
S. E. Svyakhovskiy, N. I. Pyshkov
{"title":"Photonic Crystals with an Arbitrary Number of Photonic Band Gaps Made of Porous Quartz with a Gradual Change in the Refractive Index","authors":"S. E. Svyakhovskiy,&nbsp;N. I. Pyshkov","doi":"10.1134/S0030400X24040167","DOIUrl":"10.1134/S0030400X24040167","url":null,"abstract":"<p>One-dimensional photonic crystals with an arbitrary number and spectral position of photonic band gaps in the optical spectral range are experimentally demonstrated. The absence of mutual influence of the photonic band gaps was shown. No features corresponding to higher harmonics or combination frequencies were found in the spectral response of the multifrequency photonic crystals created.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"416 - 420"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213931","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
Low-Frequency Stimulated Light Scattering in Virus Suspensions under Picosecond Excitation 皮秒激发下病毒悬浮液中的低频受激光散射
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030056
A. F. Bunkin, M. A. Davydov, A. N. Fedorov, E. V. Shashkov, M. V. Arkhipenko, O. V. Karpova
{"title":"Low-Frequency Stimulated Light Scattering in Virus Suspensions under Picosecond Excitation","authors":"A. F. Bunkin,&nbsp;M. A. Davydov,&nbsp;A. N. Fedorov,&nbsp;E. V. Shashkov,&nbsp;M. V. Arkhipenko,&nbsp;O. V. Karpova","doi":"10.1134/S0030400X24030056","DOIUrl":"10.1134/S0030400X24030056","url":null,"abstract":"<p>When excited by a powerful picosecond pulse of the second harmonic of a YAP:Nd laser, inelastic scattering lines with frequency detunings in the range of  ~10–130 GHz relative to the laser line were detected in suspensions of morphologically similar AltMV and PVX viruses. This scattering has a threshold nature, and the sets of its spectral lines are different for different virus samples.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"234 - 236"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213871","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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