Indian Journal of Physics最新文献

Scattering amplitude and interaction radius at high energies 高能散射振幅和相互作用半径

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-08-21 DOI: 10.1007/s12648-025-03709-7

Sajida Abdulvahabova, Irada Afandiyeva

{"title":"Scattering amplitude and interaction radius at high energies","authors":"Sajida Abdulvahabova, Irada Afandiyeva","doi":"10.1007/s12648-025-03709-7","DOIUrl":"10.1007/s12648-025-03709-7","url":null,"abstract":"<div>In this paper, a theoretical study of the interaction of hadrons at high energies is carried out within the eikonal approach using a relativistic quasipotential in the Yukawa form. The application of the of two-particle unitarity conditions and analytical continuity in the high-energy region allows for an effective consideration of the structure of the scattering amplitude in the impact parameter plane. The dependence of the cross section and the ratio A(t)—the of the real part of the forward scattering amplitude to its imaginary part, on the momentum t are discussed. The slope of diffraction at a given energy depends slightly on t. In more peripheral interactions, the nature of the potential does not affect the value of A(t) to the same extent as the momentum transfer. In the Oriar region, with increasing energy, the slope of the diffraction peak increases, indicateing that particles with small transverse moment become easier to scatter. By using the total angular momentum as a relativistic dynamic variable and taking into account the minimum value of this moment, beyond which partial waves contribute negligibly to the amplitude, an expression is derived for the effective interaction radius in the relativistic case. It is shown that the interaction radius cannot increase significantly with increasing energy, since this would lead toan unrealistic swelling of the particles. The physical interpretation of the results indicates that the qualitative scattering picture is valid for a broader class of strong potentials that decay rapidly at infinity. The obtained results are applied to elastic (p,p) scattering.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4383 - 4388"},"PeriodicalIF":1.7,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062183","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

Uncertainty relation for pseudo-Hermitian quantum systems 伪厄米量子系统的不确定性关系

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-08-07 DOI: 10.1007/s12648-025-03733-7

Boubakeur Khantoul, Bilel Hamil, Amar Benchikha

引用次数: 0

Nonlinear propagation of Laguerre-Gaussian beam in quantum plasma: Comparative study 拉盖尔-高斯光束在量子等离子体中的非线性传播：比较研究

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-07-22 DOI: 10.1007/s12648-025-03570-8

Ravinder Kaur, Ranju Mahajan, Tarsem Singh Gill

引用次数: 0

A comparative study of structural and opto-electronic properties of pure and functionalized Ag QDs in 6CHBT LC media 纯银量子点与功能化银量子点在6CHBT LC介质中的结构与光电特性比较研究

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-27 DOI: 10.1007/s12648-025-03625-w

Manish Kumar Mishra, Satya Pal Singh, Archana Kumari Singh

{"title":"A comparative study of structural and opto-electronic properties of pure and functionalized Ag QDs in 6CHBT LC media","authors":"Manish Kumar Mishra, Satya Pal Singh, Archana Kumari Singh","doi":"10.1007/s12648-025-03625-w","DOIUrl":"10.1007/s12648-025-03625-w","url":null,"abstract":"<div>Silver quantum dots (Ag QDs) are emerging nanomaterials with unique structural and opto-electronic properties, offering potential applications in photonics, sensing, and catalysis. This study investigates the structural and opto-electronic characteristics of pure and functionalized Ag QDs in presence of 6CHBT LC media. Ag QDs were synthesized by using silver nitrate and tri-sodium citrate. Comprehensive characterizations were performed to understand the impact of surface functionalization of Ag QDs done with 2,5-Dimercapto-1,3,4-thiadiazole (DMTD) hosted 6CHBT LC media. High Resolution X-ray diffraction (HR-XRD) confirmed the crystalline nature of the QDs and provided insights into their crystallite size. Energy-dispersive X-ray analysis (EDAX) validated the elemental composition, ensuring the successful functionalization of Ag QDs without presence of impurities. Scanning electron microscopy (SEM) revealed the morphological features and size distribution of the synthesized quantum dots. Optical absorption measurements, obtained through UV–VIS–NIR spectroscopy, demonstrated significant changes in the absorption profile due to the functionalization, highlighting the influence of surface modifications on the electronic structure and optical bandgap of the QDs. The study emphasizes the correlation between structural and opto-electronic properties of Ag QDs and the role of functionalization in tailoring their opto-electronic properties for specific applications. The findings pave the way for optimizing their use in advanced nanotechnological applications.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4035 - 4051"},"PeriodicalIF":1.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062163","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

Dual-morphology MoO3: a novel strategy for enhanced electrochemical stability and charge transfer in energy applications 双形态MoO3：在能量应用中增强电化学稳定性和电荷转移的新策略

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-26 DOI: 10.1007/s12648-025-03683-0

Bhawana Chand, Peeyush Phogat, Shreya, Ranjana Jha, Sukhvir Singh

{"title":"Dual-morphology MoO3: a novel strategy for enhanced electrochemical stability and charge transfer in energy applications","authors":"Bhawana Chand, Peeyush Phogat,  Shreya, Ranjana Jha, Sukhvir Singh","doi":"10.1007/s12648-025-03683-0","DOIUrl":"10.1007/s12648-025-03683-0","url":null,"abstract":"<div>A novel dual morphology of MoO3, combining nanorods and nanospheres, was synthesized via a hydrothermal method to enhance its structural and electrochemical properties. X-ray diffraction confirmed the orthorhombic phase with high crystallinity, while field-emission scanning electron microscopy revealed distinct nanorods and nanospheres. The cyclic voltammetry analysis showed a stable cathodic peak without an anodic counterpart, indicating excellent material stability and reduction efficiency. Electrochemical impedance spectroscopy demonstrated a charge transfer resistance of 23,049 Ω and Warburg diffusion impedance of 3604 Ω s–1/2, highlighting efficient electron transfer dynamics. The synergistic effect of nanorods, offering high surface area, and nanospheres, providing structural stability, significantly improved the material’s electrochemical behavior. These properties make dual-morphology MoO3 a strong candidate for solar cells and energy storage devices, offering a novel strategy for optimizing charge transfer and reducing recombination losses in energy materials.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4081 - 4090"},"PeriodicalIF":1.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062186","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

Structural stability, electronic and magnetic properties of a new quaternary Heusler magnetic semiconductor material: first-principal study 一种新型四元Heusler磁性半导体材料的结构稳定性、电子和磁性：第一主要研究

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-16 DOI: 10.1007/s12648-025-03653-6

Sihem Fakhr Dine, Charef Abbes, Souheil Belbachir, Maafa Wiam, Hamza Abbassa, Abdelaziz Boukra, Abdelkader Boukortt

{"title":"Structural stability, electronic and magnetic properties of a new quaternary Heusler magnetic semiconductor material: first-principal study","authors":"Sihem Fakhr Dine, Charef Abbes, Souheil Belbachir, Maafa Wiam, Hamza Abbassa, Abdelaziz Boukra, Abdelkader Boukortt","doi":"10.1007/s12648-025-03653-6","DOIUrl":"10.1007/s12648-025-03653-6","url":null,"abstract":"<div>Heusler compounds, known for their diverse physical properties and applications, have garnered considerable interest. In this study, we investigate the mechanical, dynamic, and thermodynamic phase stability, along with the electronic and magnetic characteristics of the CoMnTaSb quaternary Heusler alloy, utilizing density functional theory (DFT) calculations. The full-potential linearized augmented plane wave (FP-LAPW) approach is employed. Exchange–correlation effects are treated using the generalized gradient approximation (GGA) and the modified Becke–Johnson potential (GGA + mBJ). Phonon dispersion frequencies, cohesive and formation energies, convex hull distance, and elastic constants all confirm the stability of the CoMnTaSb compound, supporting its feasibility for experimental synthesis. It has been determined that the CoMnTaSb compound is apt for room-temperature applications due to its high Curie temperature. Within the GGA (GGA + mBJ) approximation, our calculations predict that the compound exhibits magnetic semiconducting behavior, with band gaps of 0.196 (0.470) eV along the L–X direction in the spin-up state and 0.189 (0.441) eV along the Γ–X direction in the spin-down state. An integer total magnetic moment of 2.00 μB per formula unit is found, satisfying the Slater–Pauling rule ({m}_{text{tot}}=left(Z-24right) ,{mu }_{B}). The electronic and magnetic properties of the CoMnTaSb quaternary Heusler compound under hydrostatic pressure are also analyzed.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4145 - 4153"},"PeriodicalIF":1.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062218","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

Fabrication and characterization of CdO-B2O3-Li2O-MoO3 glass as a potent shield against ionizing radiation CdO-B2O3-Li2O-MoO3玻璃防电离辐射的制备与表征

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-11 DOI: 10.1007/s12648-025-03650-9

Dalal Abdullah Aloraini, Kh. S. Shaaban

{"title":"Fabrication and characterization of CdO-B2O3-Li2O-MoO3 glass as a potent shield against ionizing radiation","authors":"Dalal Abdullah Aloraini, Kh. S. Shaaban","doi":"10.1007/s12648-025-03650-9","DOIUrl":"10.1007/s12648-025-03650-9","url":null,"abstract":"<div>This article assesses CdO's potential to enhance the structural, mechanical, and radiation-shielding qualities of lithium boromolybdate glasses. Densities (g/cm3) increased from 2.42 to 3.79 with an increase of CdO, whereas the Vm (m3/mol) decreased from 27.79 to 21.9. The ultrasonic velocities (m/s) (VL) and (VT) were incremented, VL increment from 4848 to 5329 and VT increment from 2113 to 2509. The elastic constant of synthesized glasses with varying CdO concentrations was increasing trends with an increase of CdO. The outcomes are in satisfactory agreement with the Mak-Mac values for elastic moduli. The MAC incremented with the quantity of CdO increased. The MAC values have the following trends S5 > S4 > S3 > S2 > S1. The HVL and MFP have the following trends S1 > S2 > S3 > S4 > S5. S5 sample has the lowermost (HVL) value thus, it demonstrations the best proficient at all E. Therefore, the S5 is the greatest effective for shielding against γ radiation. The shielding characteristics of the current samples are superior by the addition of CdO.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4135 - 4144"},"PeriodicalIF":1.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062166","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

Solar light induced photocatalytic efficiency of double perovskites towards dyes mixture degradation: a response surface methodology-based optimization approach 太阳能诱导双钙钛矿对染料混合物降解的光催化效率：基于响应面法的优化方法

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-10 DOI: 10.1007/s12648-025-03629-6

A. Nawaz, J. Afreeq, T. Khan, L. Zhao, H. Zhai

{"title":"Solar light induced photocatalytic efficiency of double perovskites towards dyes mixture degradation: a response surface methodology-based optimization approach","authors":"A. Nawaz, J. Afreeq, T. Khan, L. Zhao, H. Zhai","doi":"10.1007/s12648-025-03629-6","DOIUrl":"10.1007/s12648-025-03629-6","url":null,"abstract":"<div>The higher band gaps of traditional semiconductor oxides hinders their widespread applications due to its limited solar light utilization. Perovskites are emerging photocatalysts to utilize the ultraviolet and visible part of the solar spectrum to reveal their efficiency in advanced oxidation processes. In the current study, visible light responsive double perovskites oxides of A2BB/O6 stoichiometry was tailored and applied to eliminate toxic synthetic dyes added into freshwater streams as industrial effluents. The SEM and EDX confirmed the smooth and regular surfaces and stoichiometric ratio and elemental composition. The interpretation of the XRD spectrum confirmed a monoclinic crystal unit with a 29.23 nm average crystallite size. The optical band gap of materials lies in the visible region. The fabricated materials were applied to diminish methylene blue (MB) and Eosin Y (EY) dye individually. The degradation efficiencies of MB and EY dyes were 97.44 and 99.41% at optimum conditions of 60 min irradiation time, 0.05 g catalyst dosage, 60 mg/L dye concentration, and pH 11, and 5 respectively, followed by their mixture under solar light irradiations. The optimized parameters describe the efficiency of A2BB′O6 perovskites under solar light irradiations. The MB and EY removal followed the first-order kinetics model with R2 values of 0.981 and 0.8832; the rate constant values were 0.0555 s−1 and 0.0692 s−1, respectively. Response surface methodology modeling reveals that the removal of MB follows the quadratic model while EY degradation fit well with the reduced quadratic model, having maximum desirability factors value and maximum significant terms, with R2 0.9951, 0.9986 and adjR2 values 0.9889, 0.9976 for MB and EY respectively.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4067 - 4079"},"PeriodicalIF":1.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062178","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 multi-species plasma on the modulation instability of obliquely propagating dust ion acoustic waves 多种等离子体对斜传播尘埃离子声波调制不稳定性的影响

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-10 DOI: 10.1007/s12648-025-03623-y

Paltu Halder, Sandip Dalui, Avinash Kumar Mittal, Anup Bandyopadhyay, Sankirtan Sardar

{"title":"The effect of multi-species plasma on the modulation instability of obliquely propagating dust ion acoustic waves","authors":"Paltu Halder, Sandip Dalui, Avinash Kumar Mittal, Anup Bandyopadhyay, Sankirtan Sardar","doi":"10.1007/s12648-025-03623-y","DOIUrl":"10.1007/s12648-025-03623-y","url":null,"abstract":"<div>Using the reductive perturbation method, we obtained a nonlinear Schrödinger equation to study the modulational instability of dust ion acoustic waves propagating obliquely to the direction of the uniform static magnetic field in a magnetized five component plasma system composed of warm adiabatic ions, nonthermal positrons, static dust grains, nonthermal electrons (hot), and isothermal electrons (cold). By obtaining the nonlinear dispersion relation of the modulated dust ion acoustic wave, the effect of different species involved in the system has been studied to the instability regions in the parameter plane. The instability region grows with the isothermal to nonthermal electron number density ratio. For a certain range of increasing values of the ion cyclotron frequency, the stable region increases. The instability region also grows with the nonthermal parameter of the energetic hot electrons. As the ratio of isothermal electron to nonthermal electron number density increases, the maximum modulational growth rate of instability experiences a decline. The maximal modulational growth rate of instability’s zone of existence grows as the positrons’ nonthermal parameter rises. A rise in the ratio of positron to nonthermal electron temperature results in a maximum modulational growth rate of instability.\u0000</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4409 - 4421"},"PeriodicalIF":1.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062124","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 bifurcation and optical solitons in fiber Bragg gratings with conformable beta-derivative 具有共形导数的光纤Bragg光栅的分岔和光孤子分析

IF 1.7 4区物理与天体物理

Indian Journal of Physics Pub Date : 2025-06-10 DOI: 10.1007/s12648-025-03628-7

Sara Salem Alzaid, Badr Saad T. Alkahtani

{"title":"Analysis of bifurcation and optical solitons in fiber Bragg gratings with conformable beta-derivative","authors":"Sara Salem Alzaid, Badr Saad T. Alkahtani","doi":"10.1007/s12648-025-03628-7","DOIUrl":"10.1007/s12648-025-03628-7","url":null,"abstract":"<div>In this study, we amalgamate the optical soliton solutions to the dimensionless form of the fractional coupled nonlinear Schrödinger equation (FCNLSE) in fiber Bragg gratings (FBGs) with dispersive reflectivity along with Kerr law of nonlinear refractive index. FBGs is a technological spectacle that exhibit the nonlinear effects due to the Kerr nonlinearity, where the refractive index of the fiber core varies with the intensity of the light passing across it. With the use of the newly created computational technique, the new extended direct algebraic method (NEDAM), we were able to manifest the novel optical soliton solutions, which have not been previously documented in the literature, in the framework of hyperbolic soliton, periodic, periodic-singular, multi-dark, dark-bright, bright-dark, mixed trigonometric, singular as well as rational. Moreover, validation of the solutions is carried out utilizing the Hamiltonian property, confirming the accuracy and stability of segregated optical solitary wave solutions. We also conduct a thorough bifurcation analysis to look into the bifurcation events that the FCNLSE displays. We also perform sensitivity analysis to investigate the robustness of the chosen model against changes in initial conditions and parameters, which offers an understanding of the system’s susceptibility to disturbances. We provide 3-D and 2-D visualisations of optical soliton wave solutions and phase plane analysis using Mathematica 11.0 and Matlab’s rk4 and ode45 algorithms. Using numerical simulations and analytical tools, we show how effective our proposed technique is in analyzing the FCNLSE, providing new insights into their behavior and solutions. Our results offer fresh perspectives on the dynamics of FCNLSE and contribute to the development of mathematical instruments for studying nonlinear partial differential equations, which have many characteristics in the area of applied mathematics and physics.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 11","pages":"4197 - 4222"},"PeriodicalIF":1.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062126","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