High Energy Density Physics最新文献

Modeling compact stellar objects admitting anisotropic fluid in f(R,T) gravity: Viability and stability analysis f（R，T）重力下具有各向异性流体的致密恒星物体建模：可行性和稳定性分析

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2026-01-27 DOI: 10.1016/j.hedp.2026.101267

M. Sharif , Tayyab Naseer , Hira Shadab

{"title":"Modeling compact stellar objects admitting anisotropic fluid in f(R,T) gravity: Viability and stability analysis","authors":"M. Sharif , Tayyab Naseer , Hira Shadab","doi":"10.1016/j.hedp.2026.101267","DOIUrl":"10.1016/j.hedp.2026.101267","url":null,"abstract":"<div><div>Our investigation develops two new singularity-free interior solutions, describing spherical anisotropic configurations within the framework of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> gravity. The modified Einstein field equations are established along with the expression of anisotropic pressure for a static geometry. Two independent constraints are imposed to solve the resulting field equations. In each case, we solve differential equations for temporal metric function under the assumption of radial potential and the anisotropic factor. Such an integration results in multiple integration constants that are fixed by matching the interior line element with the Schwarzschild exterior solution at the stellar surface. The vanishing radial condition at the surface also serves as an additional constraint. Afterwards, we investigate particular requirements whose fulfillment produce physically feasible compact star models. For graphical evaluation, we utilize observational data from two compact objects, namely SMC X-4 and 4U 1820-30, and vary the model parameter. Our analysis demonstrates that both stellar models satisfy all necessary physical acceptability conditions for specific parametric choices.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101267"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090383","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}

引用次数: 0

Optical soliton structures and stability behavior in the fractional Kairat-X equation via analytical methods 分数阶Kairat-X方程中的光孤子结构和稳定性

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2025-11-28 DOI: 10.1016/j.hedp.2025.101251

Tayyaba Younas , Jamshad Ahmad

引用次数: 0

Effect of shape and asymmetry of density ramp on laser pulse amplification via stimulated Brillouin scattering 密度坡道的形状和不对称性对受激布里渊散射激光脉冲放大的影响

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.hedp.2026.101265

M. Lashgari , M. Asghari , D. Komaizi , A.R. Niknam , H. Moghadasin

{"title":"Effect of shape and asymmetry of density ramp on laser pulse amplification via stimulated Brillouin scattering","authors":"M. Lashgari , M. Asghari , D. Komaizi , A.R. Niknam , H. Moghadasin","doi":"10.1016/j.hedp.2026.101265","DOIUrl":"10.1016/j.hedp.2026.101265","url":null,"abstract":"<div><div>The amplification of ultrashort laser pulses has attracted significant attention in recent years. An advanced approach involves utilizing plasma as a medium for the amplification process. In this research, we conduct particle-in-cell (PIC) simulations to study the interaction between two counter-propagating seed and pump pulses in a plasma with sub-quarter-critical density. To reduce noise in the simulations, we initially optimized the number of particles per cell. Various plasma conditions affecting the amplification process are considered. The findings reveal that among the studied cases, density ramps and plasma lengths significantly influence energy transfer efficiency. The seed pulse reaches maximum amplification at a plasma density of <span><math><mrow><mn>0</mn><mo>.</mo><mn>0104</mn><mspace></mspace><msub><mrow><mi>n</mi></mrow><mrow><mi>c</mi><mi>r</mi></mrow></msub></mrow></math></span>, where the largest Brillouin peak is observed. For the three ramp shapes – linear, quadratic, and exponential – the results show that quadratic ramps achieve the highest amplification levels due to the enhanced phase matching condition. It was also found that seed amplification is more effective with asymmetric density ramps. These insights contribute to the optimization of plasma-based stimulated Brillouin scattering for achieving ultrahigh-intensity laser pulses in applications ranging from inertial confinement fusion to high-energy particle acceleration.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101265"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090382","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}

引用次数: 0

Numerical solution of time fractional Korteweg–de Vries–Burgers equation in a dusty plasma with non-extensive distributed electrons 含非广泛分布电子的尘埃等离子体中时间分数Korteweg-de Vries-Burgers方程的数值解

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2026-01-12 DOI: 10.1016/j.hedp.2025.101264

Mehnaz Shakeel , Shahida Parveen , Mustafa Inc , Hina Zahir , Hina Bibi

{"title":"Numerical solution of time fractional Korteweg–de Vries–Burgers equation in a dusty plasma with non-extensive distributed electrons","authors":"Mehnaz Shakeel , Shahida Parveen , Mustafa Inc , Hina Zahir , Hina Bibi","doi":"10.1016/j.hedp.2025.101264","DOIUrl":"10.1016/j.hedp.2025.101264","url":null,"abstract":"<div><div>In this article, the Korteweg–de Vries–Burgers equation (KdVBE) is derived for ion-acoustic shocks in a dusty plasma considering warm ions, electrons and dust. The set of equations is normalized using different schemes, and the reductive perturbation technique (RPT) is applied to derive the model. The KdVBE is converted to time fractional KdVBE and then numerical scheme is formulated for the solution of time fractional KdVBE. A radial basis function collocation scheme and the Crank–Nicolson scheme are applied on time fractional KdVBE. The time-fractional derivative is discretized using the Caputo–Fabrizio fractional derivative. Moreover, a <span><math><mi>θ</mi></math></span>-weighted scheme is implemented for the spatial derivatives, in which radial basis functions are used for space derivatives in which radial basis function is used to approximate the derivatives. The behaviour of the method is assessed with the help of graphs and tables, and also shows the effect of the Caputo–Fabrizio fractional derivative. Numerical simulations indicate that the proposed scheme is highly efficient to find more accurate results. The solution is obtained for a variety of parameters to describe their behaviour of parameters like temperature ratio, fractional parameter and non-extensive distribution. The accuracy of the proposed method is verified by comparing the results with other methods in the literature.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101264"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976617","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}

引用次数: 0

Collisional-radiative spectral analysis code PrismSPECT 碰撞辐射光谱分析代码PrismSPECT

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2025-12-15 DOI: 10.1016/j.hedp.2025.101255

I.E. Golovkin, M.F. Gu, J.J. MacFarlane, J. Sebald, T. Walton

引用次数: 0

Implications of f(Q) gravity on pulsar SAX J1748.9-2021 structure f(Q)重力对脉冲星SAX J1748.9-2021结构的影响

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2026-02-10 DOI: 10.1016/j.hedp.2026.101271

M. Sharif , Eman M. Moneer , Madiha Ajmal , Euaggelos E. Zotos

{"title":"Implications of f(Q) gravity on pulsar SAX J1748.9-2021 structure","authors":"M. Sharif , Eman M. Moneer , Madiha Ajmal , Euaggelos E. Zotos","doi":"10.1016/j.hedp.2026.101271","DOIUrl":"10.1016/j.hedp.2026.101271","url":null,"abstract":"<div><div>In this paper, we examine the effects of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span> gravity on the anisotropic pulsar star SAX J1748.9-2021, with <span><math><mi>Q</mi></math></span> representing non-metricity. The internal structure of the system is modeled using the <em>Krori–Barua</em> metric under anisotropic fluid conditions, employing the quadratic model of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span> gravity. Astrophysical observations from the pulsar SAX J1748.9-2021, collected from X-ray binary bursts in globular clusters, are used to investigate various geometric and physical properties. We explore the behavior of some physical characteristics like matter variables, anisotropy, mass–radius relation, redshift, the <em>Zeldovich condition</em>, energy conditions, causality conditions, adiabatic index, Tolman–Oppenheimer–Volkoff equation, equation of state parameter and compactness. It is found that these quantities show consistency with other observational data. This study supports the viability and stability of the pulsar SAX J1748.92021 in the framework of the modified gravity theory.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101271"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188065","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}

引用次数: 0

Impact of charge on stellar interiors within f(Q,Lm) gravity f（Q,Lm）重力下电荷对恒星内部的影响

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2026-02-09 DOI: 10.1016/j.hedp.2026.101269

M. Sharif , A. Arooj

{"title":"Impact of charge on stellar interiors within f(Q,Lm) gravity","authors":"M. Sharif , A. Arooj","doi":"10.1016/j.hedp.2026.101269","DOIUrl":"10.1016/j.hedp.2026.101269","url":null,"abstract":"<div><div>This manuscript studies the viability and stability of charged neutron stars exhibiting anisotropic matter distribution within the framework of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>)</mo></mrow></mrow></math></span> gravity (<span><math><mi>Q</mi></math></span> denotes non-metricity and <span><math><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub></math></span> represents the matter Lagrangian). A specific functional form of this theory is adopted to derive explicit expressions for the field equations, which describe the interplay between matter and geometry. The structure of static spherically symmetric system is analyzed using two novel non-singular solutions. The unknown constants in the metric potentials are determined by employing smooth matching conditions at the stellar boundary. A graphical analysis of key physical properties is conducted to asses the viable neutron stars. Furthermore, the stability of these charged stellar objects is examined through different methods. We conclude that these charged stellar configurations are both viable and stable, as they satisfy all necessary physical conditions.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101269"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188063","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}

引用次数: 0

The periodic electroosmotic flow of Jeffrey fluid with slip boundary conditions between parallel plates under high Zeta potential 高Zeta电位下具有滑动边界条件的平行板间Jeffrey流体的周期性电渗透流动

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2025-11-29 DOI: 10.1016/j.hedp.2025.101253

Jiaofei Liu, Mengqi Yu, Kun Li

{"title":"The periodic electroosmotic flow of Jeffrey fluid with slip boundary conditions between parallel plates under high Zeta potential","authors":"Jiaofei Liu, Mengqi Yu, Kun Li","doi":"10.1016/j.hedp.2025.101253","DOIUrl":"10.1016/j.hedp.2025.101253","url":null,"abstract":"<div><div>In this paper, the electroosmotic flow of Jeffrey fluid under alternating electric fields with high Zeta potential and slip boundary conditions is analyzed. The velocity is solved semi-analytically using the nonlinear Poisson-Boltzmann equation and the Cauchy momentum equation. The potential and velocity distributions are solved numerically using the parameter variation method and the central difference method. The notable consequence is that the Reynolds number can lead to oscillations, yet such oscillations strongly depend on factors such as slip length and so on, and there are significant differences in the flow properties under different factors. The flow velocity difference is significant at high and low Zeta potentials, while the flow velocity difference between parallel plates tends to zero. As the slip length increases, there is also a greater wall velocity, and the velocity amplitude under slip conditions is much greater than under no slip conditions. As the relaxation time changes, the flow tendency and velocity of the fluid at the pipe wall and pipe center differ, which is related to boundary layer effects and other factors. In addition, this paper will not only help to improve the theory of microscale flow, but also provide new ideas and methods for the optimal design of microfluidic technology and the efficient separation of biomolecules.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101253"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145694362","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}

引用次数: 0

Joule–Thomson expansion of AdS charged non-linear electrodynamics black hole 带电非线性电动力学黑洞的焦耳-汤姆逊展开

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2025-12-17 DOI: 10.1016/j.hedp.2025.101258

R.H. Ali , Iroda Abdullayeva , G. Abbas , M. Zubair

引用次数: 0

Experimental platforms for investigating feature-driven jets for HED mix model validation 研究特征驱动射流用于HED混合模型验证的实验平台

IF 0.9 3区物理与天体物理

High Energy Density Physics Pub Date : 2026-03-01 Epub Date: 2025-12-29 DOI: 10.1016/j.hedp.2025.101260

C.H. Allen , A.M. Rasmus , J.M. Levesque , E.C. Merritt , S. Pellone , K.A. Flippo , N. Christiansen , C.A. Di Stefano , P. Donovan , J. Lavelle , K. Love , J.I. Martinez , D.W. Schmidt , S.J. Stringfield , C. Wilson , F. Doss

{"title":"Experimental platforms for investigating feature-driven jets for HED mix model validation","authors":"C.H. Allen , A.M. Rasmus , J.M. Levesque , E.C. Merritt , S. Pellone , K.A. Flippo , N. Christiansen , C.A. Di Stefano , P. Donovan , J. Lavelle , K. Love , J.I. Martinez , D.W. Schmidt , S.J. Stringfield , C. Wilson , F. Doss","doi":"10.1016/j.hedp.2025.101260","DOIUrl":"10.1016/j.hedp.2025.101260","url":null,"abstract":"<div><div>High-energy-density (HED) systems, such as inertial confinement fusion (ICF), are susceptible to hydrodynamic instabilities that can significantly affect both experimental results and modeling predictions. Isolated features, such as fill tubes or divots in the capsule, can cause material to jet as a result of the compressive shock exciting the Richtmyer–Meshkov instability, and serve as one of the primary degradation mechanisms in ICF yield. Simulations of feature-driven jets and how they mix require extensive experimental validation, particularly for understanding to what degree the initial size and shape of a feature influence jet dynamics, and how much instability feeds through downstream layers. A better understanding of feature-driven jetting can improve our mix modeling capabilities and increase hydrodynamic simulation accuracy.</div><div>This manuscript describes a series of experimental platforms fielded by Los Alamos National Laboratory as a part of the <em>Mshock</em> Omega 60 and <em>ModCons</em> Omega EP campaigns to explore feature-driven jetting. These platforms are designed to benchmark jet evolution and growth as a function of initial feature size and shape, investigate jet-layer interactions leading to instability feedthrough, and will be used to characterize jet-jet interactions resulting from clusters of features. Preliminary results for both platforms are shown. The <em>ModCons</em> experiments are on-going, and a discussion of future work directions is included.</div></div>","PeriodicalId":49267,"journal":{"name":"High Energy Density Physics","volume":"58 ","pages":"Article 101260"},"PeriodicalIF":0.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884466","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}

引用次数: 0