The European Physical Journal Plus最新文献

{"title":"Analyzing the impact of economic and social factors on the GDP of BRICS countries using modeling approach","authors":"Renuka Dixit,&nbsp;Shalini Chandra,&nbsp;Peeyush Misra","doi":"10.1140/epjp/s13360-026-08183-6","DOIUrl":"10.1140/epjp/s13360-026-08183-6","url":null,"abstract":"<div><p>This research explores the economic and social sustainability of the BRICS nations, using GDP as the dependent variable to measure economic advancement. The independent economic factors under examination include final consumption expenditure, as well as imports and exports of goods and services. Moreover, population and unemployment rates are regarded as social independent factors. In formulating energy resource policies, primary energy consumption is also taken into consideration as another independent variable. To portray the enduring relationship among these variables, we employ cross-sectional panel data and apply the ordinary least squares method. Unit root tests, like Im–Pesaran–Shin test, Levin–Lin–Chu test, and Breitung test, are employed to ensure the stationarity of the data. The Johansen cointegration test analyses the relationship between variables, while FMOLS and DOLS estimate parameters in regression models with endogenous regressors and autocorrelation in panel data. The Granger causality test determines the one-way or two-way relationships between variables, indicating their direction of influence. The findings reveal a two-way causality between gross domestic product and imports of goods and services, primary energy consumption, final consumption expenditure, and population. It is found that population is the only variable demonstrating a bidirectional causality with all other variables.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"LAM-coupled bi-cell CNN: firing activities and synchronous patterns","authors":"Huagan Wu,&nbsp;Wei Shao,&nbsp;Zichen Wang,&nbsp;Quan Xu,&nbsp;Ke Pang,&nbsp;Mo Chen","doi":"10.1140/epjp/s13360-026-08144-z","DOIUrl":"10.1140/epjp/s13360-026-08144-z","url":null,"abstract":"<div><p>The implementation of neuron-based intelligent systems hinges on neuromorphic circuits capable of emulating diverse neuronal firing activities. Memristors, owing to the close resemblance of their intrinsic properties to biological neurons, offer a promising platform for constructing such networks. In this study, we propose a novel memristive cellular neural network (CNN) cell to generate diverse firing activities by implanting a non-ideal memristor into the classical CNN cell. Its dynamics are investigated to focus on stimulus-related firing activities and the underlying bifurcation mechanisms. Furthermore, we develop a locally active memristor (LAM)-coupled bi-cell CNN to explore the synchronous patterns between two homogeneous CNN cells connected via a LAM synaptic coupler. The results indicate that both external stimulus and the LAM synaptic coupler can regulate the synchronous patterns. Finally, we fabricate an analog circuit to experimentally demonstrate the complex firing activities and synchronous patterns, thereby providing a robust validation of our numerical findings.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Internal solitary wave simulation using physics-informed neural networks with Boltzmann distribution-based adaptive sampling strategy","authors":"Xin-Yue Gao,&nbsp;Xiang-Hua Meng","doi":"10.1140/epjp/s13360-026-08203-5","DOIUrl":"10.1140/epjp/s13360-026-08203-5","url":null,"abstract":"<div><p>To balance the distribution uniformity of global sampling and the accurate capture of local key regions effectively, this paper proposes an adaptive sampling method based on the Boltzmann distribution for the interior collocation point sampling of physics-informed neural networks (PINNs). This method can realize orderly design for global sampling and dynamic focus on local high-error regions. Considering the improvement of the utilization efficiency and update mechanism of interior collocation points, four distinctive sampling strategies embedding the adaptive sampling method are designed. Compared with the training accuracy using PINN, simulation experiments demonstrate that the optimal strategy demonstrates higher accuracy for four test equations. For the internal wave equation, numerical simulations are carried out using hydrological parameters from two different environments. Results show that the simulation accuracy all improves for the internal wave KdV (iw-KdV) equation and the internal wave mG (iw-mG) equation with ideal flume parameters and real ocean parameters. Taking both scenarios in ideal flume and in real ocean into account, the simulations for solving the internal wave equations effectively verify the robustness and the generalization capability of the proposed algorithm. Furthermore, the proposed sampling strategies are embedded into an improved PINN model, namely pr-PINN. Experimental results confirm that the sampling strategy can effectively enhance the solution accuracy and provide reliable technical guidance for the optimization of sampling mechanisms in PINNs.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"End-to-end evaluation of CBCT registration using a novel pediatric anthropomorphic head phantom on an Elekta Versa HD linear accelerator","authors":"H. Sekkat,&nbsp;O. El Mouden,&nbsp;I. Brika,&nbsp;Y. Madkouri,&nbsp;A. Khallouqi,&nbsp;A. Halimi,&nbsp;O. El Rhazouani","doi":"10.1140/epjp/s13360-026-08195-2","DOIUrl":"10.1140/epjp/s13360-026-08195-2","url":null,"abstract":"<div><p>This study evaluated the use of a novel patient-derived pediatric anthropomorphic head phantom as a controlled test object for end-to-end assessment of the cone-beam CT registration and HexaPOD correction workflow on an Elekta Versa HD linear accelerator. The phantom was fabricated from a retrospective head CT dataset of a 5-year-old child and incorporated heterogeneous tissue-equivalent head structures. Controlled setup errors included a primary translational series with displacements up to 1.0, 1.4, and 1.2 cm in the lateral, longitudinal, and vertical directions, an additional small-displacement series using 0.1–0.3-cm offsets, and controlled rotations of ±1° and ±2° about the three rotational axes. CBCT images were registered to the planning CT using manual pre-alignment followed by automatic bone-based registration. Because the anthropomorphic phantom was not a dimensional metrology standard, a QUASAR Penta-Guide phantom was used as the dedicated geometric reference. The phantom preserved clear CT/CBCT contrast between air, soft tissue-equivalent, fluid-equivalent, and mineralized structures. In the primary translational series, the mean absolute nominal-shift discrepancies were 0.046, 0.044, and 0.051 cm in the lateral, longitudinal, and vertical directions, respectively. Across eight matched conditions, the corresponding mean absolute pediatric-to-Penta-Guide differences were 0.055, 0.070, and 0.055 cm. In the small-displacement series, XVI detected the correct correction direction in all acquisitions, with pediatric phantom mean absolute discrepancies of 0.007, 0.008, and 0.008 cm. Controlled rotations were also detected with the correct direction, with mean absolute angular discrepancies of 0.07°, 0.08°, and 0.10° about <span>({R}_{X})</span>, <span>({R}_{Y})</span>, and <span>({R}_{Z})</span>, respectively. These findings support the phantom’s use as a controlled, anatomically realistic test object for end-to-end XVI/IGRT workflow assessment, complementary to, but not a replacement for, dedicated geometric QA phantoms.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Active-matrix driven liquid crystal metasurfaces for programmable infrared emissivity control: physical insights and analytical characterization","authors":"Shucheng Wang,&nbsp;Yunhui Li,&nbsp;Zhengyang Li,&nbsp;Chaojie Dong,&nbsp;Junran Cai,&nbsp;Yu Lin,&nbsp;Jiayong Wang","doi":"10.1140/epjp/s13360-026-08150-1","DOIUrl":"10.1140/epjp/s13360-026-08150-1","url":null,"abstract":"<div><p>Conventional thermal camouflage materials suffer from the bottleneck of fixed emissivity, limiting their adaptability to dynamic environments. In this work, we propose and physically investigate a programmable liquid crystal metasurface (MLCM) based on a gold–liquid crystal–gold (Au-LC-Au) configuration for precise long-wave infrared emissivity regulation. By synergistically coupling the Metal–Insulator–Metal (MIM) resonance with the electrically controlled Frederiks transition, the device achieves a continuous grayscale response nearly ranging from 0 to 1. Theoretical analysis based on impedance matching and Gap Surface Plasmon (GSP) modes elucidates the transition from a high-reflection state to a near-unity absorption state. To bridge the gap between simulation and implementation, we integrate the metasurface with an 8<span>(times)</span>20 Thin Film Transistor (TFT) active-matrix and propose a feasible fabrication path for maintaining the critical 0.2 <span>(mu)</span>m cell gap. Numerical results demonstrate high-fidelity thermal imaging of a complex “SHU” pattern and multi-level emissivity control. Notably, our MLCM platform effectively overcomes the hysteresis effects and binary switching limitations of traditional phase-change materials (e.g., VO<span>(_2)</span>). This study provides a scalable hardware foundation for dynamic camouflage, high-performance spatial light modulation, and infrared information encryption.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Unveiling the dynamics of dust-ion-acoustic waves: insights into supernonlinear phenomena in inhomogeneous dusty plasmas","authors":"Sahar G. Tawfik,&nbsp;A. Atteya,&nbsp;Lamia Abu El Maati,&nbsp;M. Abd-Elzaher","doi":"10.1140/epjp/s13360-026-08000-0","DOIUrl":"10.1140/epjp/s13360-026-08000-0","url":null,"abstract":"<div><p>This study investigates dust-ion-acoustic wave propagation in a collisionless, unmagnetized, inhomogeneous dusty plasma containing cold positive ions, positive/negative dust grains, and isothermal electrons. Using the reductive perturbation method, the nonlinear Korteweg–de Vries (KdV) and nonlinear modified-KdV (mKdV) equations are derived. The mKdV reveals solitary, periodic, and superperiodic waves. The primary novelty lies in identifying supernonlinear waves in dusty plasmas, which maintain their shape under strong nonlinearity, enabling efficient energy localization and potential turbulence onset. Additionally, bifurcation theory is employed to classify nonlinear periodic, homoclinic, and superperiodic orbits, offering new phase-space insight. Key findings show that higher ion densities and dust charges increase phase velocity and enhance electrostatic coupling, whereas steeper density gradients and larger-scale lengths reduce phase velocity and amplitude. The nonlinear coefficient exhibits sign-dependent regimes, while the dispersive coefficient shows opposite parametric trends. Sagdeev potential analysis reveals two local minima and one maximum, supporting compressive/rarefactive solitons and superperiodic waves. Spatial amplitude attenuation with distance marks inhomogeneity as a conservative modulation mechanism. These results advance our understanding of energy transport in astrophysical (solar wind, cometary tails) and laboratory dusty plasmas.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Practical fidelity limits of Toffoli gates in superconducting quantum processors","authors":"Muhammad AbuGhanem","doi":"10.1140/epjp/s13360-026-08168-5","DOIUrl":"10.1140/epjp/s13360-026-08168-5","url":null,"abstract":"<div><p>High-fidelity multi-qubit gates are essential for near-term quantum computing, underpinning both quantum algorithms and fault-tolerant protocols. The Toffoli (CCX) gate is central to quantum error correction and arithmetic operations, yet its performance on current quantum hardware remains constrained by noise and connectivity limitations. This work presents a comprehensive, hardware-aware characterization and benchmarking of the Toffoli gate implemented on IBM’s 127-qubit superconducting quantum processors. Using experimental quantum state tomography (QST), we evaluate the end-to-end output-state fidelity for three algorithmically relevant input states—Greenberger–Horne–Zeilinger (GHZ), <i>W</i>, and uniform superposition—across three execution environments: noise-free simulation, noise-aware simulation, and real hardware. For each input state, the experimental sequence consists of state preparation, Toffoli gate application, and QST experiments. Our results reveal significant state-dependent fidelity loss. GHZ states achieve output-state fidelities of 98.442% (noise-free), 81.470% (noise-aware), and 56.368% (quantum hardware); <i>W</i> states yield 98.739%, 79.900%, and 63.689%; and uniform superposition states yield 99.490%, 85.469%, and 61.161%. This study characterizes state-dependent error patterns, quantifies the substantial simulation-to-hardware fidelity gap, and demonstrates how entanglement structure impacts gate performance, thereby providing critical empirical benchmarks for hardware-efficient quantum circuit design.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Quantum-chemical exploration of ultra-inert greenhouse gas binding on Be12O12 and Mg12O12 nanocages: adsorption energetics, charge transfer, and sensing potential","authors":"Avni Berisha","doi":"10.1140/epjp/s13360-026-08199-y","DOIUrl":"10.1140/epjp/s13360-026-08199-y","url":null,"abstract":"<p>Ultra-inert fluorinated greenhouse gases such as CF₄, C₂F₆, C₃F₈, and SF₆ pose a significant environmental challenge because of their exceptional thermodynamic stability and limited interactions with conventional adsorbent materials. Herein, we present a comparative quantum-chemical investigation of their adsorption on Be₁₂O₁₂ and Mg₁₂O₁₂ nanocages. Density functional theory calculations were combined with high-level DLPNO-CCSD(T)-based Local Energy Decomposition (LED) analysis and Quantum Theory of Atoms in Molecules (QTAIM) analysis to elucidate the interactions at energetic and electron-density levels. Adsorption of CF₄, C₂F₆, and C₃F₈ produces relatively small changes in the frontier-orbital structure of both nanocages, consistent with predominantly weak, noncovalent adsorption. In contrast, SF₆ induces pronounced LUMO stabilization and substantial frontier-orbital gap reduction, indicating a markedly stronger electronic perturbation despite only modest net charge transfer. LED analysis shows that electrostatic interactions provide the dominant contribution to stabilization, while Mg₁₂O₁₂ generally exhibits stronger interactions with the investigated gases than Be₁₂O₁₂. QTAIM analysis further indicates differences in the bonding characteristics of the two oxide frameworks. The results reveal distinct structure–property relationships governing the interaction of ultra-inert fluorinated gases with oxide nanocages and identify Mg₁₂O₁₂ as a promising candidate for SF₆ sensing based on adsorption-induced electronic modulation.</p>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Fabrication of NiCoFeCrMn high-entropy alloy by mechanical alloying for high-temperature aviation engine bearings and ınvestigation of its tribological wear performance","authors":"Emre Altas","doi":"10.1140/epjp/s13360-026-08204-4","DOIUrl":"10.1140/epjp/s13360-026-08204-4","url":null,"abstract":"<div><p>In this study, a NiCoFeCrMn high-entropy alloy (HEA) intended for aviation engine bearing applications was produced by mechanical alloying; its tribological wear behavior was systematically investigated using the pin-on-disk method at room temperature (RT), 300, and 600 °C. Elemental powders with equal atomic ratios (99.9% purity) were mechanically alloyed in a high-energy planetary ball mill for 20 h, pressed under a pressure of 700 MPa, and subsequently sintered in an argon atmosphere. Comprehensive investigations of the tribological wear behavior of mechanically alloyed NiCoFeCrMn HEAs over the temperature range of 25–600 °C remain limited in the literature, and the present study aims to address this research gap. XRD analysis revealed the successful formation of a single-phase nanocrystalline FCC solid solution after 20 h of mechanical alloying, without any detectable secondary phases or intermetallic compounds. The microhardness decreased from 251 HV0.5 at RT to 210 HV0.5 (16.3%) at 300 °C and 170.8 HV0.5 (31.9%) at 600 °C, indicating a two-stage thermal softening behavior while retaining a substantial fraction of the initial hardness throughout the investigated temperature range. Tribological tests showed that increasing temperature significantly improved all performance indicators. Under both loading conditions, the highest coefficient of friction and wear rate were recorded at RT, whereas the lowest values were obtained at 600 °C. Under a 10 N load, the coefficient of friction decreased from 0.49 at RT to 0.29 at 600 °C (a 40.8% decrease), while the wear rate decreased from 1.42 × 10⁻3 mm3/N·m at RT to 0.74 × 10⁻3 mm3/N·m at 600 °C (a 47.9% decrease). Under a 20 N load, the coefficient of friction decreased from 0.57 at RT to 0.37 at 600 °C (a 35.1% decrease), and the wear rate decreased from 1.12 × 10⁻3 mm3/N·m at RT to 0.60 × 10⁻3 mm3/N·m at 600 °C (a 46.4% decrease). SEM–EDS, XRD, and cross-sectional analyses performed at RT, 300, and 600 °C revealed a temperature-dependent transition in the dominant wear mechanism. Adhesive and abrasive wear predominated at RT because of the low oxygen content and the presence of single-phase FCC wear debris. At 300 °C, an intermediate oxidation stage was observed, whereas at 600 °C, a stable Cr₂O₃/MnO protective tribofilm, confirmed by XRD and cross-sectional EDS analyses, formed on the wear surface, resulting in simultaneous reductions in both the coefficient of friction and the wear rate.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Electronic structure and radiative properties of endohedrally and spherically confined hydrogen and alkali atoms in dense plasma: energies, dipole polarizabilities, oscillator strengths, Einstein coefficients, and lifetimes","authors":"R. L. Melingui Melono,&nbsp;E. D. Alo’fack Nguesop,&nbsp;A. J. Etindele,&nbsp;O. Motapon","doi":"10.1140/epjp/s13360-026-08198-z","DOIUrl":"10.1140/epjp/s13360-026-08198-z","url":null,"abstract":"<div><p>The electronic structure and radiative properties of hydrogen, lithium, sodium, and potassium atoms subjected to spherical and endohedral confinement in a dense plasma environment are investigated using a non-relativistic B-spline-based Galerkin variational method. Model potentials are employed to describe the multi-electron nature of Li, Na, and K atoms within an effective one-electron framework, while the endohedral confinement inside a C<span>(_{60})</span> cage is modeled by a Woods–Saxon-type potential. The numerical approach enables systematic calculations of static dipole polarizabilities, oscillator strengths, dipole transition matrix elements, spontaneous transition probabilities (Einstein <i>A</i> coefficients), and excited-state lifetimes as functions of the confinement radius and plasma screening parameter. The results reveal two competing mechanisms governing the atomic response: the geometric confinement, which compresses the electron density and suppresses radiative properties, and the plasma screening, which weakens the nuclear attraction and generally enhances polarizability. Under strong spherical confinement, the geometrical barrier dominates and the electronic properties become weakly sensitive to the plasma environment. In endohedral confinement, the interplay between plasma screening and cage geometry produces quasi-localized excited states and strongly species-dependent radiative behavior. In particular, hydrogen exhibits a symmetry-allowed <span>(2s-2p)</span> level crossing associated with pronounced variations in transition properties, whereas lithium shows redistribution of radiative strength; sodium and potassium atoms display strong suppression of dominant valence transitions under intense screening. These findings are relevant to spectroscopic diagnostics of confined atoms in dense plasma and fullerene environments.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"141 8","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}