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
Description of the Classical Diffraction Experiment of a Systemof Many Slits and the Interference Pattern of Two Sources within the Framework of a Single Scheme 多狭缝系统的经典衍射实验及单一方案框架下两源干涉图样的描述
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-09-04 DOI: 10.54503/18291171-2023.16.2-40
A. Khachatrian, Zh. R. Panosyan, A. F. Parsamyan, L.R. Soghomonyan
{"title":"Description of the Classical Diffraction Experiment of a Systemof Many Slits and the Interference Pattern of Two Sources within the Framework of a Single Scheme","authors":"A. Khachatrian, Zh. R. Panosyan, A. F. Parsamyan, L.R. Soghomonyan","doi":"10.54503/18291171-2023.16.2-40","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.2-40","url":null,"abstract":"The problem of an approximate description of the wave field of many sources is \u0000considered. It is shown that, if the problem is considered more comprehensively, the description of \u0000the interference and diffraction experiments can be given within the framework of a single scheme. \u0000It is shown that the character of wave amplification in these two classical experiments is different. \u0000In the case of an interference experiment, the field amplification is fixed at a point, while in the case \u0000of a diffraction experiment the field amplification is fixed in the observation direction. The problem \u0000of determining the intensity maximum of a diffraction grating in the Fresnel pattern is studied under \u0000the condition that the maximum is satisfied in the Fraunhofer pattern. A condition under which a \u0000diffraction grating behaves like a lens is obtained.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"129 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86381375","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
The Effect of Modulated Millimeter Electromagnetic Waves of Non-Thermal Intensity on the Physical Properties of Aqueous Solutions 非热强度调制毫米波对水溶液物理性质的影响
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-09-04 DOI: 10.54503/18291171-2023.16.2-62
V. Kalantaryan, L. R. Sogomonyan, R. S. Ghazaryan, Yura Babayan
{"title":"The Effect of Modulated Millimeter Electromagnetic Waves of Non-Thermal Intensity on the Physical Properties of Aqueous Solutions","authors":"V. Kalantaryan, L. R. Sogomonyan, R. S. Ghazaryan, Yura Babayan","doi":"10.54503/18291171-2023.16.2-62","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.2-62","url":null,"abstract":"The surface tension and density of bi-distilled water, water salt solution and salt \u0000solutions of the DNA, irradiated by non-thermal millimeter electromagnetic waves with the \u0000frequencies 64.5 GHz, 50.3 GHz and 48.3 GHz with modulation 1 Hz and 16 Hz are investigated. \u0000The measurements of test samples show that due to irradiation the surface tension does not \u0000change. The densities of water salt solution and the salt solutions of the DNA increase under \u0000irradiation at the frequencies 64.5 GHz and 50.3 GHz with modulation 1 Hz. When modulated \u0000with a frequency of 16 Hz, the density increases at a carrier frequency of 64.5 GHz and decreases \u0000at a carrier frequency of 50.3 GHz which coincides with the resonant frequencies of oscillations of \u0000water hexagonal structures.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"34 14","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72492761","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
Functionalization of Graphene Oxide Layers Simultaneously with Liquid Phase Exfoliation 同时液相剥离氧化石墨烯层的功能化
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-09-04 DOI: 10.54503/18291171-2023.16.2-56
L. Anjo, A. Arshakyan, N. Gasparyan, A. A. Shahinyan, E. Aleksanyan, N. Margaryan
{"title":"Functionalization of Graphene Oxide Layers Simultaneously with Liquid Phase Exfoliation","authors":"L. Anjo, A. Arshakyan, N. Gasparyan, A. A. Shahinyan, E. Aleksanyan, N. Margaryan","doi":"10.54503/18291171-2023.16.2-56","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.2-56","url":null,"abstract":"Graphene oxide (GO) has garnered significant interest for its exceptional properties and potential applications in various fields. This study investigated the disparities between graphene oxide synthesized in an ammonia-acetone solution and graphene oxide synthesized in acetone using the exfoliation method. Raman spectroscopy, FTIR spectroscopy, and current-voltage characteristics analysis were employed to evaluate the samples. Raman spectroscopy analysis revealed distinct differences in the molecular composition and structural characteristics of the samples, as indicated by variations in the \"D,\" \"G,\" and \"2D\" peaks. FTIR spectroscopy identified various functional groups in both samples, with changes attributed to the presence of ammonium in one sample. Furthermore, the current-voltage characteristics analysis was conducted to assess the electrical properties of the graphene films. Results of the current-voltage characteristics analysis showed that the conductivity of the membranes obtained in an acetone medium was approximately an order of magnitude higher than that of the membranes obtained in an ammonia medium. This discrepancy suggests that the exfoliation in an acetone medium resulted in stronger doping of the graphene layers compared to the exfoliation in an ammonia solution. The linearity observed in the current-voltage characteristics can be attributed to the presence of a significant number of free electrons in the conduction band of the samples due to doping. These findings provide valuable insights into the structural, compositional, and electrical properties of graphene oxide synthesized using different methods and precursor solutions. Understanding these disparities is crucial for tailoring graphene-based materials to specific applications.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"75 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83169438","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
Polarization of the Fulling-Rindler Vacuum in Models with Compact Dimensions 紧尺寸模型中富勒-伦德勒真空的极化
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-09-04 DOI: 10.54503/18291171-2023.16.2-83
V. Kotanjyan
{"title":"Polarization of the Fulling-Rindler Vacuum in Models with Compact Dimensions","authors":"V. Kotanjyan","doi":"10.54503/18291171-2023.16.2-83","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.2-83","url":null,"abstract":"We investigate the expectation value of the field squared for a charged scalar field in the \u0000Rindler spacetime with toroidally compact dimensions. The expectation values are compared for \u0000the Fulling-Rindler and Minkowski vacua. For general phases in the periodicity conditions on the \u0000field operator along compact dimensions, integral representations are provided for the difference of \u0000those expectation values. The vacuum expectation value of the field squared is an even periodic \u0000function of the magnetic flux enclosed by compact dimensions. Simple asymptotic expressions are \u0000given near the Rindler horizon and for small accelerations. We show that the mean field squared in \u0000the Fulling-Rindler vacuum is smaller than the respective expectation value for the Minkowski \u0000vacuum.","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"223 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85944736","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
Nearest-Neighbor Tunneling Ansatz in the Bose-Hubbard Model Bose-Hubbard模型中的最近邻隧道分析
4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-09-04 DOI: 10.54503/18291171-2023.16.2-35
Moorad Alexanian
{"title":"Nearest-Neighbor Tunneling Ansatz in the Bose-Hubbard Model","authors":"Moorad Alexanian","doi":"10.54503/18291171-2023.16.2-35","DOIUrl":"https://doi.org/10.54503/18291171-2023.16.2-35","url":null,"abstract":"","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135402755","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 Electroinduced Bremsstrahlung in Water 水中电致轫致效应的研究
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-07-14 DOI: 10.1134/S1068337223020032
V. S. Arakelyan, R. N. Balasanyan, I. G. Grigoryan, P. G. Muzhikyan, R. B. Kostanyan
{"title":"Investigation of Electroinduced Bremsstrahlung in Water","authors":"V. S. Arakelyan,&nbsp;R. N. Balasanyan,&nbsp;I. G. Grigoryan,&nbsp;P. G. Muzhikyan,&nbsp;R. B. Kostanyan","doi":"10.1134/S1068337223020032","DOIUrl":"10.1134/S1068337223020032","url":null,"abstract":"<p>The phenomenon of electrically induced generation of bremsstrahlung in water was experimentally observed for the first time when water was exposed to electric pulses with steep fronts. The dependence of the X-ray intensity on the frequency of electrical pulses and the magnitude of the potential difference applied to the electrodes in water has been studied. The physical mechanism of X-ray excitation in water with the formation of quasi-neutrons is proposed.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"58 2","pages":"129 - 133"},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4577142","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 Nanosecond Laser Pulses Optical Detection in Ferrimagnetic Crystals Y3Fe5O12 and YFeO3 纳秒激光脉冲对Y3Fe5O12和YFeO3铁磁晶体光学检测的研究
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-07-14 DOI: 10.1134/S1068337223020068
D. H. Baghdasaryan, G. S. Gevorkyan, A. H. Makaryan, Y. S. Sahakyan, V. R. Tadevosyan
{"title":"Investigation of Nanosecond Laser Pulses Optical Detection in Ferrimagnetic Crystals Y3Fe5O12 and YFeO3","authors":"D. H. Baghdasaryan,&nbsp;G. S. Gevorkyan,&nbsp;A. H. Makaryan,&nbsp;Y. S. Sahakyan,&nbsp;V. R. Tadevosyan","doi":"10.1134/S1068337223020068","DOIUrl":"10.1134/S1068337223020068","url":null,"abstract":"<p>The optical detection of a nanosecond laser pulse in transparent ferrimagnetic single crystals of yttrium iron garnet and yttrium orthoferrite in the IR range at room temperature was experimentally studied. A linearly polarized neodymium laser (wavelength 1.06 μm) operating in the Q-switched mode was used as the source of electromagnetic radiation. The pulse duration was about 20 ns, and the peak power ∼10 MW. It was found that the ferrimagnetic detector has a sufficient response time to detect nanosecond laser pulses. The amplitude of the detected signal strongly depends on the external bias magnetic field and correlates well with the nonlinearity of the static magnetization curve of the ferrimagnetic crystal sample used.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"58 2","pages":"184 - 187"},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4577582","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 Excitation Functions of Proton-Induced Reactions on Natural Gadolinium Using the Nuclear Interaction Codes TALYS 1.96 and EMPIRE 3.2 利用核相互作用代码TALYS 1.96和EMPIRE 3.2研究天然钆质子诱导反应的激发函数
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-07-14 DOI: 10.1134/S1068337223020147
H. A. Mkrtchyan
{"title":"Investigation of the Excitation Functions of Proton-Induced Reactions on Natural Gadolinium Using the Nuclear Interaction Codes TALYS 1.96 and EMPIRE 3.2","authors":"H. A. Mkrtchyan","doi":"10.1134/S1068337223020147","DOIUrl":"10.1134/S1068337223020147","url":null,"abstract":"<p>The excitation functions in proton-induced reactions on natural gadolinium <sup>nat</sup>Gd(p,xn)<sup>152,153,154,156,160</sup>Tb were calculated for terbium isotopes, which are of interest from both scientific and application points of view. The calculations were performed in wide energy range of proton beam from the corresponding thresholds of reactions up to 70 MeV. The calculations were carried out using TALYS 1.96 and EMPIRE 3.2 nuclear reaction codes. Calculations have been done by different models inherent in these codes. The obtained results are compared with published experimental data. The discrepancies between experimental and theoretical data were discussed, which indicates the need to expand the experimental data base in order to improve the theoretical models.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"58 2","pages":"105 - 111"},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4577583","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
Human Serum Albumin Interaction with Methyl Violet under the Influence of Millimeter-Range Electromagnetic Waves 毫米波影响下人血清白蛋白与甲基紫的相互作用
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-07-14 DOI: 10.1134/S1068337223020160
P. O. Vardevanyan, M. A. Shahinyan, M. A. Parsadanyan, S. V. Grigoryan, V. P. Kalantaryan
{"title":"Human Serum Albumin Interaction with Methyl Violet under the Influence of Millimeter-Range Electromagnetic Waves","authors":"P. O. Vardevanyan,&nbsp;M. A. Shahinyan,&nbsp;M. A. Parsadanyan,&nbsp;S. V. Grigoryan,&nbsp;V. P. Kalantaryan","doi":"10.1134/S1068337223020160","DOIUrl":"10.1134/S1068337223020160","url":null,"abstract":"<p>The effect of a millimeter-wave range of electromagnetic waves (MM EMW) on methyl or crystal violet interaction with human serum albumin (HSA) has been studied using UV-denaturation, fluorescence spectroscopy, and CD spectroscopy methods. It was revealed that MM EMW irradiation results in the weakening of the stability of HSA and decreases the interaction force between HSA and methyl violet (MV). It was also shown that MM EMW irradiation by non-resonant frequency of the water affects the structure of HSA immediately, and changes its secondary structure, while the irradiation by water-resonant frequency does not invoke structural changes, but weakens the stability to a higher degree.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"58 2","pages":"198 - 203"},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4573290","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
Modelling of the Porous and Black Silicon Reflection Characteristics 多孔和黑硅反射特性的建模
IF 0.6 4区 物理与天体物理
Journal of Contemporary Physics (Armenian Academy of Sciences) Pub Date : 2023-07-14 DOI: 10.1134/S1068337223020056
G. Y. Ayvazyan
{"title":"Modelling of the Porous and Black Silicon Reflection Characteristics","authors":"G. Y. Ayvazyan","doi":"10.1134/S1068337223020056","DOIUrl":"10.1134/S1068337223020056","url":null,"abstract":"<p>The results of FDTD modeling of the spectral reflection characteristics of periodic systems with unit cells in the form of cylinders and cones corresponding to the morphology of the porous and black silicon layer presented. The antireflection behavior of these systems with a characteristic size on the order of several hundreds of nanometers is analyzed. The properties of reflection depending on the geometric parameters of unit cells and the angle of incidence of light rays are investigated. It is shown that periodic systems with cones are superior in antireflection properties to systems with cylinders.</p>","PeriodicalId":623,"journal":{"name":"Journal of Contemporary Physics (Armenian Academy of Sciences)","volume":"58 2","pages":"164 - 171"},"PeriodicalIF":0.6,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4573297","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
首页 上一页 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：481959085
Book学术官方微信