Optics and Spectroscopy最新文献_第2页

Ab Initio Calculations of the Electronic Structure of the Doublet and Quartet States of the Rubidium Trimer 铷三聚体双态和四态电子结构的 Ab Initio 计算

IF 0.8 4区物理与天体物理

Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030044

E. A. Bormotova, A. S. Likharev, A. V. Stolyarov

{"title":"Ab Initio Calculations of the Electronic Structure of the Doublet and Quartet States of the Rubidium Trimer","authors":"E. A. Bormotova, A. S. Likharev, A. V. Stolyarov","doi":"10.1134/S0030400X24030044","DOIUrl":"10.1134/S0030400X24030044","url":null,"abstract":"Systematic quantum chemical calculations were performed for the ground and a number of low-lying electronically excited doublet and quartet states of the rubidium trimer molecule. The obtained potential energy surfaces (PES), spin-orbit couplings (SOC) and electronic transition dipole moments (ETDM) can be useful for optimizing paths for laser synthesis, cooling and manipulation of stable ensembles of Rb3 molecules at ultralow temperatures. Ab initio calculations of the electronic structure of the homonuclear Rb3 molecule, in linear, isosceles triangle and equilateral triangle geometries, were performed using the multi-reference configuration interaction method, taking into account single and double excitations (M-R‑CISD) and with explicit dynamic correlation of only the three valence electrons. The structure of each atom was approximated using a nine-electron effective core potential (ECP28MDF), and molecular orbitals (MOs) were optimized using the spin averaged (over doublet and quartet states) multi-configuration self-consistent field (SA-CASSCF) method. Core–valence correlations between twenty-four subvalence electrons located on doubly occupied MOs and three valence electrons were implicitly taken into account using a one-electron angular momentum-independent Müller–Mayer core polarization potential (CPP). As a result of topological investigations at over 35 000 points, two dimensional PES, SOC, and ETDM functions were obtained and the geometric parameters Rb3 were found at which the most intense vertical transitions and the maximum influence of the SOC are expected.","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"223 - 233"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213870","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

Virus Diagnostics Using Fabry–Pérot Interference Films of Macroporous Silicon 利用大孔硅的法布里-佩罗干涉膜进行病毒诊断

IF 0.8 4区物理与天体物理

Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030093

K. A. Gonchar, N. Yu. Saushkin, I. I. Tsiniaikin, A. A. Eliseev, A. S. Gambaryan, J. V. Samsonova, L. A. Osminkina

{"title":"Virus Diagnostics Using Fabry–Pérot Interference Films of Macroporous Silicon","authors":"K. A. Gonchar, N. Yu. Saushkin, I. I. Tsiniaikin, A. A. Eliseev, A. S. Gambaryan, J. V. Samsonova, L. A. Osminkina","doi":"10.1134/S0030400X24030093","DOIUrl":"10.1134/S0030400X24030093","url":null,"abstract":"In this paper, the possibility of detecting viruses, specifically influenza A virus, based on changes in the spectra of total reflection from macroporous silicon (macro-pSi) films, is demonstrated for the first time. Macro-pSi films with a pore diameter of about 100 nm were produced by electrochemical etching of crystalline silicon substrates. The porosity of the macro-pSi, calculated using the Bruggeman effective medium model, was 75%. Electron microscopy showed that such highly porous films adsorb of 50–100 nm in size viruses on their surface and inside the pores, but the efficiency of adsorption significantly increases when the surface of the nanostructures is functionalized with monoclonal antibodies, providing specific binding of viruses. The reflection spectra of macro-pSi films demonstrate a series of interference fringes, the intensity of which dramatically changes upon virus adsorption. The results obtained demonstrate the possibility of a simple and effective optical method for virus diagnostics using Fabry–Pérot interference in macro‑pSi films.","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"252 - 256"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213874","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

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

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

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

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

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

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

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, A. A. Gurulev, V. A. Kazantsev, D. V. Seredin","doi":"10.1134/S0030400X24040039","DOIUrl":"10.1134/S0030400X24040039","url":null,"abstract":"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.","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

引用次数: 0