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Application of the Jost Function for Calculation of the Ground State of the Lithium Atom
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-11-11 DOI: 10.1134/S0030400X24700401
V. V. Nasyrov, M. G. Nasyrova
{"title":"Application of the Jost Function for Calculation of the Ground State of the Lithium Atom","authors":"V. V. Nasyrov,&nbsp;M. G. Nasyrova","doi":"10.1134/S0030400X24700401","DOIUrl":"10.1134/S0030400X24700401","url":null,"abstract":"<p>The paper proposes a method for calculating the ground state of the lithium atom based on the search for the roots of the Jost function calculated for the process of electron scattering by a singly ionized ion.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 5","pages":"446 - 450"},"PeriodicalIF":0.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108565","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
Determination of Fat-Soluble Vitamins by High-Performance Liquid Chromatography Tandem Mass Spectrometry in Feed, Feed Additives
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-16 DOI: 10.1134/S0030400X24700395
A. Z. Ispiryan, J. S. Mysina, I. V. Batov, S. V. Belov, I. S. Nesterenko
{"title":"Determination of Fat-Soluble Vitamins by High-Performance Liquid Chromatography Tandem Mass Spectrometry in Feed, Feed Additives","authors":"A. Z. Ispiryan,&nbsp;J. S. Mysina,&nbsp;I. V. Batov,&nbsp;S. V. Belov,&nbsp;I. S. Nesterenko","doi":"10.1134/S0030400X24700395","DOIUrl":"10.1134/S0030400X24700395","url":null,"abstract":"<p>This article describes the development of a technique for the determination of fat-soluble vitamins using high-performance liquid chromatography with mass spectrometric detection in feed, feed additives. Measurement ranges of mass concentrations of vitamins: A—from 0.35–14.0 mg/kg, D<sub>3</sub>—from 0.0065–1.0 mg/kg, and E—from 0.63–50.0 mg/kg. The technique is based on alkaline hydrolysis of the sample and extraction of fat-soluble vitamins with hexane. The analysis of the obtained extracts is carried out by high-performance liquid chromatography with mass spectrometric detection (HPLC MS/MS).</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 5","pages":"438 - 445"},"PeriodicalIF":0.8,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108883","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 Characteristics of a Photonic Crystal Structure with a Monolayer of Metal Nanoparticles 带有单层金属纳米颗粒的光子晶体结构的光谱特性
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030081
I. A. Glukhov, S. G. Moiseev
{"title":"Spectral Characteristics of a Photonic Crystal Structure with a Monolayer of Metal Nanoparticles","authors":"I. A. Glukhov,&nbsp;S. G. Moiseev","doi":"10.1134/S0030400X24030081","DOIUrl":"10.1134/S0030400X24030081","url":null,"abstract":"<p>The possibility of complete absorption of an incident electromagnetic wave in a narrow frequency band by a two-dimensional array of metal nanoparticles placed in the surface layer of a one-dimensional photonic crystal structure is demonstrated. The nature of the influence of the parameters of an array of nanoparticles (particle shape, interparticle distance) on the reflection and absorption spectra of the photonic structure in the photonic band gap is determined.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"248 - 251"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213873","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 Diagnostics of Reverse Microemulsions in the Process of Nanoparticle Synthesis 纳米粒子合成过程中的反向微乳液激光诊断技术
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030159
I. V. Plastinin, T. A. Dolenko
{"title":"Laser Diagnostics of Reverse Microemulsions in the Process of Nanoparticle Synthesis","authors":"I. V. Plastinin,&nbsp;T. A. Dolenko","doi":"10.1134/S0030400X24030159","DOIUrl":"10.1134/S0030400X24030159","url":null,"abstract":"<p>In this work, laser spectroscopy was used to study reverse microemulsions, in which the reaction of ZnS nanoparticle synthesis was carried out. The sizes of the synthesized nanoparticles do not exceed 5 nm. As a result of studying the processes in the reaction medium, it was found that the band of stretching vibrations of HS<sup>–</sup> ions in the region of 2568 cm<sup>–1</sup> is an identification sign of the synthesis of nanoparticles: by its intensity it is possible to determine the stage and completion of the ZnS synthesis.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"287 - 289"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213878","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
Determination of Conductivity Electron Concentration in Single-Crystalline n-GaSb Samples Using FIR Reflection Spectra at T = 295 K 利用 T = 295 K 时的 FIR 反射谱测定单晶 n-GaSb 样品中的传导性电子浓度
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040027
A. G. Belov, E. V. Molodtsova, S. S. Kormilitsina, R. Yu. Kozlov, E. O. Zhuravlev, S. A. Klimin, N. N. Novikova, V. A. Yakovlev
{"title":"Determination of Conductivity Electron Concentration in Single-Crystalline n-GaSb Samples Using FIR Reflection Spectra at T = 295 K","authors":"A. G. Belov,&nbsp;E. V. Molodtsova,&nbsp;S. S. Kormilitsina,&nbsp;R. Yu. Kozlov,&nbsp;E. O. Zhuravlev,&nbsp;S. A. Klimin,&nbsp;N. N. Novikova,&nbsp;V. A. Yakovlev","doi":"10.1134/S0030400X24040027","DOIUrl":"10.1134/S0030400X24040027","url":null,"abstract":"<p>A method is proposed for separately determining the concentrations of “light” and “heavy” electrons in <i>n</i>-GaSb. It is based on the analysis of reflection spectra in the far infrared region, taking into account the plasmon-phonon coupling. Calibration curves have been calculated that allow one to determine the concentrations of “light” and “heavy” electrons in GaSb using the frequency of high-energy coupled plasmon-phonon mode. For a series of <i>n</i>-GaSb samples the reflection spectra were measured and the concentrations of “light” and “heavy” electrons were determined at room temperature. Electrophysical Van der Paw measurements have been performed on the same samples at room temperature. By comparing the optical and Hall data, the ratios of the mobilities of “light” and “heavy” electrons (parameter <i>b</i>) were determined. This method of determining the value of the parameter <i>b</i> is used for the first time.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"325 - 332"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213920","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
Compton Scattering of Two Photons by an Atomic Ion 原子离子对两个光子的康普顿散射
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040088
A. N. Hopersky, A. M. Nadolinsky, R. V. Koneev
{"title":"Compton Scattering of Two Photons by an Atomic Ion","authors":"A. N. Hopersky,&nbsp;A. M. Nadolinsky,&nbsp;R. V. Koneev","doi":"10.1134/S0030400X24040088","DOIUrl":"10.1134/S0030400X24040088","url":null,"abstract":"<p>The analytical structure and absolute values of the doubly differential cross section of the Compton scattering of two X-ray photons by a multicharged neon-like atomic ion are theoretically predicted.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"365 - 370"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213925","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
Retranslation of Luminescence Excitation during Cascade Transitions in Hybrid Nanostructures Based on InP/InAsP/InP NWs and CdSe/ZnS-TOPO QDs 基于 InP/InAsP/InP NW 和 CdSe/ZnS-TOPO QD 的混合纳米结构级联转换过程中的发光激发再转换
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040106
A. I. Khrebtov, A. S. Kulagina, N. V. Sibirev, A. N. Yablonskiy, A. S. Ruban, R. R. Reznik, G. E. Cirlin, V. V. Danilov
{"title":"Retranslation of Luminescence Excitation during Cascade Transitions in Hybrid Nanostructures Based on InP/InAsP/InP NWs and CdSe/ZnS-TOPO QDs","authors":"A. I. Khrebtov,&nbsp;A. S. Kulagina,&nbsp;N. V. Sibirev,&nbsp;A. N. Yablonskiy,&nbsp;A. S. Ruban,&nbsp;R. R. Reznik,&nbsp;G. E. Cirlin,&nbsp;V. V. Danilov","doi":"10.1134/S0030400X24040106","DOIUrl":"10.1134/S0030400X24040106","url":null,"abstract":"<p>The features of photoluminescence (PL) of hybrid nanostructures based on InP/InAsP/InP nanowires array with deposited colloidal CdSe/ZnS-trioctylphosphine oxide quantum dots at increasing pump power have been studied. Pumping was carried out by 10 ps laser pulses duration with 1 MHz repetition rate at 532 nm wavelength in the quasi-resonant region of QDs absorption. It has been established, that PL maximum of the nanostructure shifts hypsochromically with increasing of laser power, revealing a gradual dominance of the bands of its components. This PL manifestation is explained by the cascade filling of excited excitonic states, accompanied by the Auger recombination processes and light quenching. The role of free carriers absorption and energy exchange between excitonic states at high pump intensities is noted, as well as a sharp PL duration reduction associated with an increase of stimulated processes in absorption.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"378 - 386"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213927","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
Optical Spectra of a Photonic Crystal Structure with Graphene Layers 带有石墨烯层的光子晶体结构的光学光谱
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030068
S. V. Eliseeva, D. I. Sementsov
{"title":"Optical Spectra of a Photonic Crystal Structure with Graphene Layers","authors":"S. V. Eliseeva,&nbsp;D. I. Sementsov","doi":"10.1134/S0030400X24030068","DOIUrl":"10.1134/S0030400X24030068","url":null,"abstract":"<p>The transformation of the graphene-containing optical spectra photonic-crystal structure with a change in the chemical potential (μ) of graphene is studied. In the period of the structure, one layer is a graphene-containing periodic medium (SiO<sub>2</sub>/Gr)<sup><i>n</i></sup>, and the second layer is assumed to be made of pure silicon. In the case of unexcited graphene (μ = 0), the absorption in the structure exceeds the reflection and transmission for frequencies outside the photonic band gaps. Within these zones, most of the incident radiation is reflected, and there is no transmission at all. As μ increases outside the band gaps, the absorption decreases in the low-frequency region, and the transmission increases the stronger, the greater μ. In a structure with an inversion defect inside the band gaps, either suppression or significant rearrangement of the defect mode takes place.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"237 - 243"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226992","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
Luminescent Cryothermometer Based on K2YF5:Er3+ 基于 K2YF5:Er3+ 的发光低温计
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030032
K. N. Boldyrev, M. Diab, N. M. Khaidukov, M. N. Popova
{"title":"Luminescent Cryothermometer Based on K2YF5:Er3+","authors":"K. N. Boldyrev,&nbsp;M. Diab,&nbsp;N. M. Khaidukov,&nbsp;M. N. Popova","doi":"10.1134/S0030400X24030032","DOIUrl":"10.1134/S0030400X24030032","url":null,"abstract":"<p>The luminescence spectra of the K<sub>2</sub>YF<sub>5</sub>:Er<sup>3+</sup> (0.5 at %) were recorded in the spectral regions of the intermultiplet transitions <sup>4</sup><i>I</i><sub>13/2</sub> → <sup>4</sup><i>I</i><sub>15/2</sub> (region of about 1.5 μm, falling within the transparency window of a standard optical fiber) and <sup>4</sup><i>I</i><sub>11/2</sub> → <sup>4</sup><i>I</i><sub>15/2</sub> (region of about 0.98 μm) with high spectral resolution at different temperatures. Pairs of spectral lines are proposed for the implementation of a Boltzmann luminescent ratiometric cryothermometer in the temperature ranges of about 20, 40, and 60 K with a relative sensitivity of 8 to 3% K<sup>–1</sup>. It is shown that measuring the half-width of a luminescence line with a wavelength of 1.538 μm (6500 cm<sup>–1</sup>) provides a simple and reliable method for recording temperatures in the range from 20 to 90 K with a relative sensitivity of 3 to 2% K<sup>–1</sup>.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"216 - 222"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213869","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
Transversely Diode-Pumped Metastable Rare Gas Atoms Laser Radiation Amplifier 横向二极管泵浦可变稀有气体原子激光辐射放大器
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030147
A. I. Parkhomenko, A. M. Shalagin
{"title":"Transversely Diode-Pumped Metastable Rare Gas Atoms Laser Radiation Amplifier","authors":"A. I. Parkhomenko,&nbsp;A. M. Shalagin","doi":"10.1134/S0030400X24030147","DOIUrl":"10.1134/S0030400X24030147","url":null,"abstract":"<p>A theoretical analysis of a radiation amplifier based on metastable noble gas atoms excited by laser diodes in transverse pumping mode is presented. In the case when the amplified radiation reaches a sufficiently high intensity, the original equations allow a simple analytical solution, from which all the most important characteristics of the amplifier and the optimal parameters of both the working environment and the pump radiation, which ensure the most efficient operation of the amplifier, are easily found.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"279 - 286"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213879","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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