发布求助
文献互助 智能选刊 最新文献

Journal of Contemporary Physics (Armenian Academy of Sciences)最新文献

筛选
英文 中文
Stark Effect in the Generalized MIC–Kepler Problem 广义MIC-Kepler问题中的Stark效应
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700513
L. G. Mardoyan
{"title":"Stark Effect in the Generalized MIC–Kepler Problem","authors":"L. G. Mardoyan","doi":"10.1134/S1068337225700513","DOIUrl":"10.1134/S1068337225700513","url":null,"abstract":"<p>The Stark effect in the generalized MIK–Kepler problem is considered. For a discrete energy spectrum, the wave function of the generalized MIK–Kepler problem is presented in parabolic coordinates, and integrals of motion whose eigenfunctions are the parabolic basis. It is shown that in the generalized MIK–Kepler problem, there is a linear Stark effect, completely removing the degeneracy of energy levels in the azimuthal quantum number, and its dipole moment is calculated. An explicit expression for the additional integral of motion for the generalized MIK–Kepler problem in the presence of a constant uniform electric field is obtained.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"142 - 147"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237014","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
Study of the Effect of Ultrasonic Radiation on Aqueous Solutions of Potassium Iodide 超声辐射对碘化钾水溶液影响的研究
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S106833722570046X
A. H. Davtyan, S. D. Arsentev, H. A. Harutyunyan
{"title":"Study of the Effect of Ultrasonic Radiation on Aqueous Solutions of Potassium Iodide","authors":"A. H. Davtyan,&nbsp;S. D. Arsentev,&nbsp;H. A. Harutyunyan","doi":"10.1134/S106833722570046X","DOIUrl":"10.1134/S106833722570046X","url":null,"abstract":"<p>It has been established for the first time that an aqueous solution of potassium iodide releases molecular iodine under the action of ultrasound radiation when cavitation occurs. The process of iodine release occurs in an oscillatory mode. It has been shown that the rate of iodine release and its maximum concentration depend on the ultrasound intensity, the concentration of the potassium iodide solution and the ultrasound frequency. At the same time, an increase in the concentration of potassium iodide in the initial solution above 5–6% does not lead to a further increase in the concentration of the iodine formed. The dependence of the maximum iodine concentration on the oscillation amplitude of the waveguide end is nonlinear.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"181 - 186"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237015","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
X-Ray Interferometric Imaging of Dislocations Generated in “Hard” LLL Interferometer “硬”LLL干涉仪位错的x射线干涉成像
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700471
T. H. Eyramjyan, T. S. Mnatsakanyan, L. A. Haroutunyan
{"title":"X-Ray Interferometric Imaging of Dislocations Generated in “Hard” LLL Interferometer","authors":"T. H. Eyramjyan,&nbsp;T. S. Mnatsakanyan,&nbsp;L. A. Haroutunyan","doi":"10.1134/S1068337225700471","DOIUrl":"10.1134/S1068337225700471","url":null,"abstract":"<p>A “hard” LLL interferometer made of dislocation-free silicon single crystal has been investigated; it differs significantly from previously known types of X-ray interferometers. Such an interferometer is highly sensitive to both initially present and introduced defects in the crystal. Several dislocations were generated in the modified part of the interferometer’s mirror block, as confirmed by X-ray topograms. Interferometric images of dislocations generated in the mirror block were obtained. The numerical simulation of single edge dislocation imaging is carried out according to the considered scheme.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"238 - 242"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236984","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 Blue Fluorescence in Cs Atomic Vapor Caused by 852 nm Radiation 852 nm激光诱导Cs原子蒸汽的蓝色荧光
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700550
A. D. Sargsyan, D.H. Sarkisyan
{"title":"Laser Induced Blue Fluorescence in Cs Atomic Vapor Caused by 852 nm Radiation","authors":"A. D. Sargsyan,&nbsp;D.H. Sarkisyan","doi":"10.1134/S1068337225700550","DOIUrl":"10.1134/S1068337225700550","url":null,"abstract":"<p>Using laser radiation with a wavelength of 852 nm, which is in resonance with Cs atoms, the bright laser-induced fluorescence (LIF) on the blue lines of 456 and 459 nm (transitions 6<i>S</i><sub>1/2</sub> → 7<i>P</i><sub>3/2</sub> and 6<i>S</i><sub>1/2</sub> → 7 <i>P</i><sub>1/2</sub>) was studied by the transition 6<i>S</i><sub>1/2</sub> → 6<i>P</i><sub>3/2</sub>. A 1 cm long T-shaped sapphire cell containing Cs atomic vapors was used. The LIF power was investigated as a function of the cell temperature. A linear dependence of the LIF power on the pump radiation was observed. The LIF reached a maximum at 100°C. It is shown that the Cs cell can serve as an effective optical up-converter filter of radiation with a wavelength of 852 nm to radiation with a wavelength of 456 nm.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"166 - 170"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236979","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
Exciton Absorption and Luminescence in CdSe Nanoplatelets: the Influence of Uniform Electric Field 均匀电场对CdSe纳米薄片激子吸收和发光的影响
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700537
A. A. Nahapetyan, L. A. Tadevosyan, D. A. Baghdasaryan, V. A. Harutyunyan
{"title":"Exciton Absorption and Luminescence in CdSe Nanoplatelets: the Influence of Uniform Electric Field","authors":"A. A. Nahapetyan,&nbsp;L. A. Tadevosyan,&nbsp;D. A. Baghdasaryan,&nbsp;V. A. Harutyunyan","doi":"10.1134/S1068337225700537","DOIUrl":"10.1134/S1068337225700537","url":null,"abstract":"<p>The exciton absorption and photoluminescence processes in a uniform electrostatic field perpendicular to the quantization direction in a CdSe nanoplatelet (NPL) are considered. Within the framework of the Takagahara model, the effects of charge carrier polarization in the axial direction are considered. The dependence on incident photon energy is analyzed for exciton absorption, and luminescence coefficients are calculated within the same model. The effects of the NPL’s geometric parameters and the strength of the external field on the absorption and luminescence coefficients are also examined. The results show that when the external field increases, the heights of both the absorption and luminescence peaks decrease. Simultaneously, the corresponding peaks broaden with increasing field strength.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"187 - 194"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236981","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
Thin Films of CdS Formed on a Polyimide Substrate by Chemical Bath Deposition Method 化学浴沉积法在聚酰亚胺衬底上制备CdS薄膜
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700549
S. G. Petrosyan, A. S. Musayelyan, A. S. Tokmajyan, V. F. Gremenok, A. V. Stanchik, K. P. Buskis, O.V. Korolik
{"title":"Thin Films of CdS Formed on a Polyimide Substrate by Chemical Bath Deposition Method","authors":"S. G. Petrosyan,&nbsp;A. S. Musayelyan,&nbsp;A. S. Tokmajyan,&nbsp;V. F. Gremenok,&nbsp;A. V. Stanchik,&nbsp;K. P. Buskis,&nbsp;O.V. Korolik","doi":"10.1134/S1068337225700549","DOIUrl":"10.1134/S1068337225700549","url":null,"abstract":"<p>Thin films of polycrystalline cadmium sulfide (CdS) were deposited on polyimide substrates using the chemical bath deposition method at a fixed solution temperature of (62 ± 1)°C. The influence of deposition time on the structural and optical properties of the resulting thin films was studied in detail. X-ray diffraction (XRD) revealed that the films predominantly consist of the hexagonal phase of CdS, with a crystallite size of approximately 10 nm, which slightly decreases with increasing deposition time. The surface roughness of the films was measured using atomic force microscopy. Scanning electron microscopy showed a uniform, compact, and smooth film surface. Raman measurements revealed three main peaks corresponding to the 1LO, 2LO, and 3LO modes in CdS. Optical measurements showed a high transmittance coefficient (~85%) and a low reflectance coefficient (4–7%) in the spectral range of 520–1000 nm. Due to changes in the stoichiometry of the CdS films, the optical band gap varied within the range of 2.30–2.37 eV with increasing deposition time. Room temperature photoluminescence spectra of the films exhibited two emission peaks located at 500 nm (2.49 eV) and 708 nm (1.75 eV), which can be attributed to free carrier recombination and excitonic or radiative transitions involving donor and acceptor levels, respectively. The obtained results demonstrate that by controlling only the deposition time, it is possible to deposit CdS thin films on polymer substrates at a relatively low chemical bath temperature. These films, without any post-growth treatment, possess sufficiently good physical properties, making them suitable for use in various flexible optoelectronic devices.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"210 - 221"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237079","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
Investigations of the Structure and Morphology of CsPbBr3 Films Deposited by Vacuum Thermal Evaporation 真空热蒸发沉积CsPbBr3薄膜的结构和形貌研究
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700525
L. A. Matevosyan, S. A. Petrosyan, V. P. Mkrtchyan, A. P. Aivazyan, V. S. Harutyunyan
{"title":"Investigations of the Structure and Morphology of CsPbBr3 Films Deposited by Vacuum Thermal Evaporation","authors":"L. A. Matevosyan,&nbsp;S. A. Petrosyan,&nbsp;V. P. Mkrtchyan,&nbsp;A. P. Aivazyan,&nbsp;V. S. Harutyunyan","doi":"10.1134/S1068337225700525","DOIUrl":"10.1134/S1068337225700525","url":null,"abstract":"<p>X-ray diffraction and optical microscopy investigations of the structural and morphological properties of polycrystalline perovskite CsPbBr<sub>3</sub> thin films deposited by vacuum thermal evaporation were conducted. The effect of the thermal annealing regime of the deposited films on their phase composition, microstructure, morphology and degree of crystallographic texturing was studied. The character of the correlation between the average sizes of grains and crystallites (subgrains) and the degree of crystallites` texturing with change of the annealing regime of films was analyzed.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"202 - 209"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237010","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
Functional Integral Representation for the S-Matrix in Integrable 2D Conformal Field Theories 二维可积共形场论中s矩阵的泛函积分表示
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700458
D. Das, G. Jorjadze, L. Megrelidze
{"title":"Functional Integral Representation for the S-Matrix in Integrable 2D Conformal Field Theories","authors":"D. Das,&nbsp;G. Jorjadze,&nbsp;L. Megrelidze","doi":"10.1134/S1068337225700458","DOIUrl":"10.1134/S1068337225700458","url":null,"abstract":"<p>We study semiclassical scattering in Liouville theory, in SL(2,R)/U(1) WZW theory and in SL(3,R) Toda theory, using the relations between the in and out fields defined by the chiral currents of these theories. By these relations we investigate the generating functional F that corresponds to the semiclassical <i>S</i>-matrix. In particular, we construct the Legendre transform of F in a closed form. The construction scheme is similar for these three theories and the obtained functionals have a compact form. This provides a basis for the functional integral representation of the <i>S</i>-matrix in these theories, which earlier was known only for Liouville theory.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"148 - 159"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236978","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
Transformation of Sodium Atoms into Magnesium in the Process of Electrolysis 电解过程中钠原子向镁的转化
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700434
R. N. Balasanyan, V. S. Arakelyan, G. R. Badalyan, I. G. Grigoryan, P. H. Muzhikyan, R. B. Kostanyan
{"title":"Transformation of Sodium Atoms into Magnesium in the Process of Electrolysis","authors":"R. N. Balasanyan,&nbsp;V. S. Arakelyan,&nbsp;G. R. Badalyan,&nbsp;I. G. Grigoryan,&nbsp;P. H. Muzhikyan,&nbsp;R. B. Kostanyan","doi":"10.1134/S1068337225700434","DOIUrl":"10.1134/S1068337225700434","url":null,"abstract":"<p>For the first time, the possibility of transforming sodium (Na) atoms into magnesium (Mg) during electrolysis was experimentally investigated. The experiments were carried out in an electrolyzer with aluminum electrodes using an aqueous solution of sodium chloride as the electrolyte. The electrolyzer was powered by electrical pulses with steep fronts. The chemical composition of the cathode surface was analyzed before and after exposure of the electrolyzer to short electrical pulses using a scanning electron microscope. As a result of the exposure, a significant accumulation of the chemical element magnesium was observed on certain areas of the aluminum cathode surface. The physical mechanism behind the appearance of the new element (Mg) is discussed.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"137 - 141"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1068337225700434.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236982","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
Spectral Properties of GSAG:Ce Crystals GSAG:Ce晶体的光谱性质
IF 0.4 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2025-10-07 DOI: 10.1134/S1068337225700446
T. I. Butaeva, A. V. Yeganyan
{"title":"Spectral Properties of GSAG:Ce Crystals","authors":"T. I. Butaeva,&nbsp;A. V. Yeganyan","doi":"10.1134/S1068337225700446","DOIUrl":"10.1134/S1068337225700446","url":null,"abstract":"<p>This paper discusses the optical properties of multicenter GSAG:Ce crystals grown by vertically directed crystallization and polycrystalline samples prepared by solid-state reactions. The absorption and luminescence bands of Ce<sup>3+</sup> ions in the GSAG:Ce crystal are formed by seven different activator centers. Almost half of the activator ions occupy dodecahedral sites surrounded by six octahedra occupied by Sc<sup>3+</sup> ions. The second part of Ce<sup>3+</sup> ions is surrounded by octahedra with various combinations of Sc<sup>3+</sup> ions and Al<sup>3+</sup> ions, as well as only Al<sup>3+</sup> ions. The shape of the luminescence band (∼18 700 cm<sup>–1</sup>) of Ce<sup>3+</sup> ions of GSAG:Ce crystals containing from 0.5 to 2.5 at % of the activator is stably preserved, and the emission intensity increases with increasing concentration of Ce<sup>3+</sup>.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"60 2","pages":"222 - 231"},"PeriodicalIF":0.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237009","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
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信