Indian Journal of Physics最新文献_第6页

Non-collinear equilibrium points in the perturbed restricted three-body problem with unstable elongated primary 具有不稳定拉长原基的扰动受限三体问题中的非共轭平衡点

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-18 DOI: 10.1007/s12648-024-03383-1

Ravi Kumar Verma, Badam Singh Kushvah

{"title":"Non-collinear equilibrium points in the perturbed restricted three-body problem with unstable elongated primary","authors":"Ravi Kumar Verma, Badam Singh Kushvah","doi":"10.1007/s12648-024-03383-1","DOIUrl":"https://doi.org/10.1007/s12648-024-03383-1","url":null,"abstract":"In this paper, we have studied the motion around the non-collinear equilibrium points in the perturbed circular restricted three-body problem. The bigger primary is considered a point mass, and the smaller primary is an unstable elongated primary. The unstable elongated primary refers to the elongated primary rotates about its centre point, i.e. at an instant, the line joining the two ends of the elongated primary and the x-axis makes an angle, (theta in [0,360^circ )). Computations of the non-collinear equilibrium points (L_{4,5}), and their linear stability, are investigated, and the results are applied to the Jupiter-Amalthea, Saturn-Prometheus and Pluto-Hydra systems. It is found that the positions of the non-collinear equilibrium points (L_{4,5}) remain unchanged with variation in the angle, (theta ), but small variation in the critical mass parameter, (mu _c) is observed. Variations of the critical mass, (mu _c), with different segment-length and its rotation are studied. Stable solutions around (L_4) are obtained in the systems of Jupiter-Amalthea, Saturn-Prometheus, and Pluto-Hydra using the established results.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"4 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215904","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

Analysis of Eu3+-ions concentration effect on the spectral properties of zinc-barium-boron-tellurite glasses 分析 Eu3+ 离子浓度对锌钡硼碲玻璃光谱特性的影响

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-17 DOI: 10.1007/s12648-024-03370-6

M. Shoaib, I. Khan, Safdar Khan, S. Mukamil, Ahmad A. Ifseisi, Mohamed E. Assal, F. Qiao, I. Ullah, S. A. Khattak, G. Rooh, J. Kaewkhao

{"title":"Analysis of Eu3+-ions concentration effect on the spectral properties of zinc-barium-boron-tellurite glasses","authors":"M. Shoaib, I. Khan, Safdar Khan, S. Mukamil, Ahmad A. Ifseisi, Mohamed E. Assal, F. Qiao, I. Ullah, S. A. Khattak, G. Rooh, J. Kaewkhao","doi":"10.1007/s12648-024-03370-6","DOIUrl":"10.1007/s12648-024-03370-6","url":null,"abstract":"<div>The present study aims to examine the concentration effect of Eu3+ ions in Boro Tellurite glass and how it affects its physicochemical and photo luminescent characteristics. Using the melt quenching method, a series of Boro-Telluride glasses with the composition (30-x) TeO2–30B2O3–10ZnO–30BaO–xEu2O3 (where x = 0.00, 0.05, 0.10, 0.50, 1.00, 1.50, 2.00, and 2.50 mol%) were synthesized. The results of the XRD analysis revealed that the prepared samples are amorphous. As the concentration of the Eu2O3 increases, the density and refractive index rise, but the molar volume decreases, indicating that the glass matrix has become more compact. Similarly, the absorption spectra and oscillator strength calculated with JO theory demonstrate the transition from 7F0 to 5L6 (in the UV–Vis region) and 7F0 to 5L6 (in the NIR region) is more intense. For TBZB–Eu7 glass, the phonon sideband energy is estimated to be 717 cm−1 and compared with the BGO scintillator, the integrated scintillation efficiency is estimated to be 16.14%. These findings demonstrate that the current glasses doped with 2 mol% Eu3+ exhibit strong luminescence qualities and can be used for portal imaging systems (MeV energies) non-destructive analysis such as industrial and medical X-ray imaging systems, and also have potential for laser application.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 4","pages":"1319 - 1326"},"PeriodicalIF":1.6,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215912","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

Analysis of magnetotransport properties of layered magnetic structures using the Boltzmann approach 利用玻尔兹曼方法分析层状磁结构的磁传输特性

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-16 DOI: 10.1007/s12648-024-03388-w

Bassem Elsafi

引用次数: 0

Optical characterization of oxadiazoles analogues doped PMMA film for photonic application 用于光子应用的掺杂恶二唑类似物 PMMA 薄膜的光学表征

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-16 DOI: 10.1007/s12648-024-03386-y

Suraj Sunil Joshi, Vikas M. Shelar, A. H. Shridhar, Sikandar H. Dhannur, Moamen S. Refat, Amnah Mohammed Alsuhaibani, Lohit Naik

{"title":"Optical characterization of oxadiazoles analogues doped PMMA film for photonic application","authors":"Suraj Sunil Joshi, Vikas M. Shelar, A. H. Shridhar, Sikandar H. Dhannur, Moamen S. Refat, Amnah Mohammed Alsuhaibani, Lohit Naik","doi":"10.1007/s12648-024-03386-y","DOIUrl":"https://doi.org/10.1007/s12648-024-03386-y","url":null,"abstract":"In the present study, newly synthesized nitrobenzene derivatives (PBT and PBF) doped poly(methyl methacrylate) films were prepared using spin coating techniques, and their optical properties were analyzed. The absorption spectra of various weight percentages (0.02%, 0.1%, 0.2%, and 0.3%) of nitrobenzene derivative-doped polymer films were recorded using a UV–visible spectrometer. From the absorption spectra, optical properties such as refractive index, band gap energy, extinction coefficient, and dielectric constant were calculated. The effect of doping on the optical properties of PMMA was investigated, with results revealing normal dispersive behavior from the refractive index and extinction coefficient. Atomic force microscopy and scanning electron microscopy images indicated that the synthesized films have a low degree of roughness and a smooth surface. Additionally, the nonlinear optical properties of the PBF-doped polymer film were investigated, and the β value was determined to be 7.403 cm/W. Overall, the findings suggest that PBF-doped polymer films are promising candidates for photonic applications.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"59 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215901","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

Enhanced absorption in thin-film silicon solar cell using buried silver nanoparticles 利用埋银纳米粒子增强薄膜硅太阳能电池的吸收能力

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-15 DOI: 10.1007/s12648-024-03387-x

Mohammad Ismaeel Zare Davijani, Abdollah Abbasi, Hassan Khalesi

引用次数: 0

Tunable band-pass plasmonic waveguide-filter in the near infrared region 近红外区域的可调谐带通等离子波导滤波器

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-13 DOI: 10.1007/s12648-024-03371-5

Ghasem KhosroBeygi, Mohammad Reza Jafari, Mehran Shahmansouri

引用次数: 0

A detail investigation on quaternary, ternary, and binary fission of Nobelium 关于锘的四价、三价和二价裂变的详细研究

IF 2 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-13 DOI: 10.1007/s12648-024-03358-2

A. V. Mahesh Babu, N. Dhananjaya, H. C. Manjunatha, N. Sowmya

{"title":"A detail investigation on quaternary, ternary, and binary fission of Nobelium","authors":"A. V. Mahesh Babu, N. Dhananjaya, H. C. Manjunatha, N. Sowmya","doi":"10.1007/s12648-024-03358-2","DOIUrl":"https://doi.org/10.1007/s12648-024-03358-2","url":null,"abstract":"The quaternary, (alpha)-ternary, and binary fission of (^{249-262})No has been studied by considering the role of deformation and angle of orientation. identified by investigating driving potential, yield, and half-lives. The identified fission fragment combination from the cold-valley plot possesses nearly magic and magic numbers of either atomic/neutron numbers or both. The branching ratio of (alpha)-decay with respect to quaternary, (alpha)-ternary, and binary fission is studied. After rigorous investigation between different decay modes, it was is noticed that (^{249})No and (^{261})No undergo spontaneous fission. The quaternary fission of (^{249-262})No is the first of its kind that is not observed in the literature. Spontaneous fission half-lives of (^{249})No and (^{261})No posses shorter half-lives when compared to other possible decay modes such as quaternary fission, (alpha)-ternary, binary fission, alpha, and (beta)-decay. The half-lives of (^{249})No and (^{261})No are found to be 1.05(times 10^{-2})s and 123, respectively. We hope that the present work will lay the foundation for future investigations.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"3 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215906","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 effects of magnetic field on thermodynamic properties of alternating Heisenberg chain 磁场对交变海森堡链热力学性质的影响

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-13 DOI: 10.1007/s12648-024-03382-2

Hamed Rezania

{"title":"The effects of magnetic field on thermodynamic properties of alternating Heisenberg chain","authors":"Hamed Rezania","doi":"10.1007/s12648-024-03382-2","DOIUrl":"10.1007/s12648-024-03382-2","url":null,"abstract":"<div>We study the effects of longitudinal magnetic field and temperature on the thermodynamic properties of one dimensional alternating Heisenberg antiferromagnet on the chain in the presence of dimerization parameter. In particular, the temperature dependence of specific heat have been investigated for various dimerization parameter and magnetic field strength in the model Hamiltonian. Using a hard core bosonic representation, the behaviors of thermodynamic properties have been studied by means of excitation spectrum of mapped bosonic gas. The effect of dimerization parameter, as the ratio between two types of exchange constants, on thermodynamic properties has also been studied via the bosonic model by Green’s function approach. Furthermore we have studied the magnetic field dependence of specific heat and magnetization for various dimerization parameters. At low temperatures, the specific heat is found to be monotonically increasing with temperature for magnetic fields in the gapped field induced phase region. We have found the magnetic field dependence of specific heat shows a monotonic decreasing behavior for various dimerization parameter due to increase of energy gap in the excitation spectrum. Also we have studied the dependence of magnetization on magnetic field for different dimerization parameters.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 4","pages":"1361 - 1370"},"PeriodicalIF":1.6,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215909","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

AC conductivity, dielectric and thermal properties of hybrid composite: bagasse cellulose carbon nanofibers composite 甘蔗渣纤维素碳纳米纤维混合复合材料的交流导电性、介电性能和热性能

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-12 DOI: 10.1007/s12648-024-03303-3

S. S. Ibrahim, Qamar Ommeish, Sherif A. Khairy, Mostafa A. Ibrahim

{"title":"AC conductivity, dielectric and thermal properties of hybrid composite: bagasse cellulose carbon nanofibers composite","authors":"S. S. Ibrahim, Qamar Ommeish, Sherif A. Khairy, Mostafa A. Ibrahim","doi":"10.1007/s12648-024-03303-3","DOIUrl":"10.1007/s12648-024-03303-3","url":null,"abstract":"<div>This study investigates the impact of incorporating carbon nanofibers (CNFs) into sugar cane cellulose at a high weight ratio (6 wt.%). Composite samples were prepared using a hot hydraulic press technique, and their thermal stability was analyzed through thermal gravitational analysis in a nitrogen environment. The results indicate that the cellulose-CNF composite exhibits a simplified single-stage decomposition compared to the more complex behavior observed in pure cellulose. FTIR analysis reveals the presence of –OH bonds, indicating enhanced hydrophilic properties in the composite. Dielectric spectroscopy, conducted over a frequency range of 100 Hz to 1 MHz, explores the effects of CNFs on the relaxation and conduction mechanisms at different temperatures. Parameters such as dielectric permittivity, AC conductivity, electrical modulus, and complex impedance were studied, incorporating Jonscher’s equation, and the Havriliak–Negami model. The interplay between interfacial charge and cellulose crystallinity emerged as a crucial factor in the observed dielectric behavior. Overall, this research provides insights into the thermal and dielectric properties of cellulose/CNF composites, offering potential applications in diverse fields.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 2","pages":"535 - 550"},"PeriodicalIF":1.6,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12648-024-03303-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215907","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

Synthesis, structural studies and optical behavior of methylcellulose/CuO nanomaterials for optoelectronics 用于光电子学的甲基纤维素/氧化铜纳米材料的合成、结构研究和光学行为

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-08-12 DOI: 10.1007/s12648-024-03218-z

B. M. Alotaibi, Haifa A. Al-Yousef, A. Atta, E. Abdeltwab, M. M. Abdelhamid

引用次数: 0