Contributions to Plasma Physics最新文献

{"title":"Influence of Nitrogen Recycling on Toroidally Asymmetric Heat Load on CFETR X-Divertor With EMC3-EIRENE Modeling","authors":"T. Xie,&nbsp;Y. J. Wang,&nbsp;H. Li,&nbsp;W. Zhang,&nbsp;F. C. Li,&nbsp;Z. D. Jiang,&nbsp;D. Z. Wang","doi":"10.1002/ctpp.70163","DOIUrl":"https://doi.org/10.1002/ctpp.70163","url":null,"abstract":"<div>\u0000 \u0000 <p>Influence of nitrogen recycling on toroidally asymmetric heat load distribution with nitrogen seeding on the Chinese Fusion Engineering Testing Reactor (CFETR) X-divertor configuration has been performed by the three-dimensional (3D) edge fluid transport code package EMC3-EIRENE. The sensitivity studies of the recycling coefficient of nitrogen ions scanned from 0% to 100% show that the larger recycling coefficients of nitrogen ions lead to a significant increment of nitrogen particle content with different charge-states in the simulation volume. The increased contributions to total power loss induced by nitrogen impurities are found both for the in- and out-board seeding positions. While the peak values of electron temperature and heat load rapidly decrease with the larger recycling coefficients of nitrogen ions, especially for the high recycling coefficient cases. A more pronounced toroidal asymmetry of heat load distribution is found for the high nitrogen recycling coefficient compared to the low recycling coefficient scenarios. This is attributed to the relatively enlarged deposition area of toroidal nitrogen ions on divertor targets and the higher power loss by nitrogen impurities as the recycling coefficient of nitrogen ions increases.</p>\u0000 </div>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125801","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}

{"title":"Prediction of the Formation of Dust Voids (Holes) in Nonextensive Dusty Plasmas With Adiabatic Charge Variation","authors":"Fahima Djaidri,&nbsp;Abderrzak Merriche,&nbsp;Rachid Fermous,&nbsp;Rabia Amour","doi":"10.1002/ctpp.70154","DOIUrl":"https://doi.org/10.1002/ctpp.70154","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 &lt;p&gt;We present a self-consistent theoretical model for a dusty plasma comprising Maxwellian electrons, nonextensive (Tsallis) ions, and dust grains that follow a vortex-like trapped distribution, with the dust charge varying adiabatically. The model couples Poisson's equation, a modified dust density that accounts for trapped particles, and an adiabatic charge relation derived from orbital-motion-limited currents. Using parameters from 10 realistic plasma environments (e.g., cometary comae, Saturn's spokes, DC discharges), we demonstrate that the ratio of dust plasma frequency to charging frequency satisfies &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;ω&lt;/mi&gt;\u0000 &lt;mi&gt;pd&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;/&lt;/mo&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;ν&lt;/mi&gt;\u0000 &lt;mi&gt;ch&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;≪&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ {omega}_{pd}/{nu}_{ch}ll 1 $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;, justifying the adiabatic approximation. Numerical solutions reveal two qualitatively distinct regimes. In the supra-nonextensive regime (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;q&lt;/mi&gt;\u0000 &lt;mo&gt;&lt;&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ q&lt;1 $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;), the electrostatic potential forms a broad, large-amplitude hump (up to &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;ψ&lt;/mi&gt;\u0000 &lt;mo&gt;∼&lt;/mo&gt;\u0000 &lt;mn&gt;0.05&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ psi sim 0.05 $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;), accompanied by a deep dust density depletion-a well-defined dust void. In contrast, the sub-nonextensive regime (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;q&lt;/mi&gt;\u0000 &lt;mo&gt;&gt;&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ q&gt;1 $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;) yields much narrower and smaller-amplitude structures (&lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;ψ&lt;/mi&gt;\u0000 &lt;mo&gt;∼&lt;/mo&gt;\u0000 &lt;mn&gt;0.005&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ psi sim 0.005 $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;), with a shallower void. The dust charge becomes more negative at the void center, and this effect is significantly stronger for &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;q&lt;/mi&gt;\u0000 &lt;mo&gt;&lt;&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ q&lt;1 $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;. T","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125855","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}

{"title":"Parametric Instability of Plasma Caused by the Influence of an External High-Frequency Electric Pumping Field","authors":"S. I. Mammadova,&nbsp;L. I. Guliyeva","doi":"10.1002/ctpp.70152","DOIUrl":"https://doi.org/10.1002/ctpp.70152","url":null,"abstract":"<div>\u0000 \u0000 <p>In this paper, we experimentally investigated the parametric instability of magnetized plasma caused by the action of an external high-frequency electric pumping field in the frequency range <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mi>pi</mi>\u0000 </msub>\u0000 <mo>≪</mo>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mn>0</mn>\u0000 </msub>\u0000 <mo>≪</mo>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mi>pe</mi>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {omega}_{pi}ll {omega}_0ll {omega}_{pe} $$</annotation>\u0000 </semantics></math> (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mi>pi</mi>\u0000 </msub>\u0000 <mo>,</mo>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mi>pе</mi>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {omega}_{p i},{omega}_{pmathit{mathrm{e}}} $$</annotation>\u0000 </semantics></math> are the ion and electron langmuir frequencies of the plasma, <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mn>0</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {omega}_0 $$</annotation>\u0000 </semantics></math> is the frequency of the external high-frequency electric field), which corresponds to the excitation of lower-hybrid electron and ion oscillations propagating almost across the magnetic field. It has been established that the longitudinal (along the magnetic field) limitation of the plasma volume under certain conditions is a decisive factor determining the threshold characteristics of the parametric process in the lower hybrid frequency range. The given estimates indicate the need to take this factor into account in the practical use of plasma systems based on high-frequency discharges.</p>\u0000 </div>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125881","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}

{"title":"Cover Picture: Contrib. Plasma Phys. 09/2026","authors":"","doi":"10.1002/ctpp.70117","DOIUrl":"https://doi.org/10.1002/ctpp.70117","url":null,"abstract":"<p>The vortex-like dust distribution function. Fig. 2 of the paper by Fahima Djaidri et al.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ctpp.70117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125904","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}

{"title":"Diffusion Coefficient of Weakly Coupled Plasmas Under Biaxial Electric Field","authors":"Rabia Waris,&nbsp;Amjad Sohail,&nbsp;Quan-zhi Zhang,&nbsp;Siti Sarah Safaai,&nbsp;Muhammad Asif Shakoori,&nbsp;Kenan Senturk,&nbsp;Necdet Aslan,&nbsp;Aamir Shahzad","doi":"10.1002/ctpp.70158","DOIUrl":"https://doi.org/10.1002/ctpp.70158","url":null,"abstract":"<div>\u0000 \u0000 <p>Diffusion processes may occur during plasma-surface interactions in fusion devices and can display spontaneous transport behavior when subjected to an external electric field. Given the gaseous characteristics of the weakly coupled (WC) plasma system, we investigated how constant-level of normalized biaxial electric field (<i>E</i>*) influences order–disorder structures, confirming that the plasma system persists in a disordered (gas-like) state. We have performed molecular dynamics (MD) simulations to determine the diffusion coefficient in three-dimensional WC plasmas under the influence of varying <i>E</i>*. The calculations of the diffusion coefficient, with suitable normalizations, are estimated across a wide range of plasma states (Γ, <i>κ</i>) in the limit of low and extended range of biaxial <i>E</i>* strengths. It has been demonstrated that a strong correlation exists between the diffusion coefficient and plasma states, which corroborates the existence of highest diffusion coefficient values. The presence of these peak values is elucidated by the maximum kinetic contribution to the diffusion coefficient in the WC regime. Moreover, an observed trend indicates that the diffusion coefficient increases as <i>E</i>* rises. Conversely, the diffusion coefficient diminishes with an increase in Γ, while it experiences an increase when there is a rise in the system's screening <i>κ</i>. The computed diffusion coefficients have shown a satisfactory alignment with parts of earlier MD results, with the most of current values typically overestimating the diffusion coefficient by 3%–30%, contingent upon plasma states. The simulation data for low value biaxial <i>E</i>* have been observed to conform to the universal temperature scaling law. These insights enhance our understanding of the behavior of dust particles and have important applications in inertial confinement fusion devices and astrophysical environments.</p>\u0000 </div>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125786","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}

{"title":"Weibel Instability in Collisionless Plasmas Across Astrophysical and Laboratory Shocks","authors":"Vivek Shrivastav,&nbsp;Mani K Chettri,&nbsp;Hemam D. Singh,&nbsp;Britan Singh,&nbsp;Rupak Mukherjee","doi":"10.1002/ctpp.70147","DOIUrl":"https://doi.org/10.1002/ctpp.70147","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 &lt;p&gt;We present a systematic cold-fluid analysis of the purely transverse Weibel (current-filamentation) instability across four regimes: non-relativistic (NR) single-species, NR multi-species, relativistic single-species and relativistic multi-species (electron–positron and electron–proton). Beginning from the linearized fluid equations, we derive the dispersion relations in each regime and extract scaling laws for &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;γ&lt;/mi&gt;\u0000 &lt;mi&gt;max&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ {gamma}_{mathrm{max}} $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; and &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;k&lt;/mi&gt;\u0000 &lt;mi&gt;max&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;=&lt;/mo&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;ω&lt;/mi&gt;\u0000 &lt;mi&gt;pi&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;/&lt;/mo&gt;\u0000 &lt;mi&gt;c&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ {k}_{mathrm{max}}={omega}_{pi}/c $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;. The main contributions are: (i) explicit regime-transition criteria in the &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mfenced&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;v&lt;/mi&gt;\u0000 &lt;mn&gt;0&lt;/mn&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;/&lt;/mo&gt;\u0000 &lt;mi&gt;c&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mo&gt;,&lt;/mo&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;m&lt;/mi&gt;\u0000 &lt;mi&gt;i&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;/&lt;/mo&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;m&lt;/mi&gt;\u0000 &lt;mi&gt;e&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/mfenced&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ left({v}_0/c,{m}_i/{m}_eright) $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; parameter space; (ii) contour maps of relativistic suppression and mass-ratio dependence serving as diagnostic charts and (iii) an assessment of where the purely transverse mode dominates over competing instabilities. Relativistic corrections suppress &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;γ&lt;/mi&gt;\u0000 &lt;mi&gt;max&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$$ {gamma}_{mathrm{max}} $$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; by up to 40% above &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;v&lt;/mi&gt;\u0000 &lt;mn&gt;0&lt;/","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125907","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}

{"title":"Ion-Wake-Driven Nonequilibrium Fluctuations in Confined Dusty Plasma Systems","authors":"Chewang Chopel Bhutia,&nbsp;Megha Chettri,&nbsp;Utpal Deka,&nbsp;A. Saravanan","doi":"10.1002/ctpp.70155","DOIUrl":"https://doi.org/10.1002/ctpp.70155","url":null,"abstract":"<div>\u0000 \u0000 <p>We study the stochastic thermodynamics for a single dust particle in a low-temperature plasma, where it is confined by a time-dependent parabolic trapping potential and is interacting through an ion wake potential which is generated by streaming ions. We numerically solved the overdamped Langevin dynamics through simulation to analyze the stochastic response of the dust particle to external driving for different protocol durations and strength of the ion flow. The ion wake introduces strong anisotropic forces which reshape the confinement environment, leading to complex, non-Gaussian fluctuations. Our findings show the multi-modal position distributions, positively skewed work statistics which satisfy the Jarzynski equality, and time-resolved kurtosis shows the continuous deviations from Gaussianity. These findings provide a quantitative understanding of fluctuation behavior and energy dissipation in driven dusty plasma systems. We believe that this framework may serve as a basis for future investigations into transport, self-organization, and energy conversion processes in complex plasma environments and other driven soft matter systems.</p>\u0000 </div>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125758","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}

{"title":"Kinetic Alfvén Waves in a Magnetized Dusty Plasma With Polarization Force","authors":"A. Rafiya,&nbsp;M. Sarker,&nbsp;M. R. Hossen,&nbsp;S. Sultana,&nbsp;A. A. Mamun","doi":"10.1002/ctpp.70142","DOIUrl":"https://doi.org/10.1002/ctpp.70142","url":null,"abstract":"<div>\u0000 \u0000 <p>In magnetized plasma environments, low-frequency electromagnetic waves such as kinetic Alfvén waves (KAWs) play a crucial role in energy transport and plasma heating. A significant factor that has an impact on wave dynamics in such media is the polarization force, which arises from the polarization of plasma ions around negatively charged dust grains, introducing electrostatic potential gradients that significantly modify nonlinear wave behavior. This study examines the effect of polarization force on the nonlinear dynamics of KAWs in a magnetized dusty plasma composed of superthermal ions (modeled by kappa distribution), Maxwellian electrons, and negatively charged inertial dust particles. Using the standard reductive perturbation technique, we derive the Korteweg-de Vries (K-dV) and modified K-dV (mK-dV) equations to describe the evolution of small but finite amplitude KAWs. The numerical solution of the latter is employed to analyze the dynamical properties of kinetic Alfvén solitary waves, which reveal that the polarization force leads to a noticeable increase in the amplitude of solitary waves. The results demonstrate that even weak polarization effects can play a crucial role in shaping the nonlinear features of KAWs, with implications for both space and laboratory plasma environments.</p>\u0000 </div>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125762","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}

{"title":"Issue Information: Contrib. Plasma Phys. 09/2026","authors":"","doi":"10.1002/ctpp.70104","DOIUrl":"https://doi.org/10.1002/ctpp.70104","url":null,"abstract":"","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ctpp.70104","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125901","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}

{"title":"Generalized Chemical Model for Warm Dense Hydrogen: Ionization Potential Depression and Molecular Dissociation Shifts","authors":"L. T. Yerimbetova,&nbsp;Yu. V. Arkhipov,&nbsp;Ye. S. Mukhametkarimov,&nbsp;A. E. Davletov,&nbsp;I. M. Tkachenko","doi":"10.1002/ctpp.70065","DOIUrl":"https://doi.org/10.1002/ctpp.70065","url":null,"abstract":"<p>Warm dense matter (WDM) is a complex state, where quantum effects, thermal excitations, and strong interparticle correlations coexist. Understanding its microscopic composition and medium-induced modifications of atomic and molecular properties is essential for planetary modeling, fusion research, and high-energy-density experiments. We develop and apply the generalized chemical model to warm dense hydrogen in order to derive analytical estimates for two key quantities: the ionization potential depression (IPD) and the molecular dissociation energy shift. We show that the IPD depends explicitly on the ionization degree and cannot be captured by classical models such as those of Ecker-Kröll and Stewart-Pyatt. By consistently including neutral components, the present framework offers a more balanced description of plasma composition across different densities and coupling regimes. Furthermore, we demonstrate that the dissociation energy of hydrogen molecules undergoes a qualitative change: at weak-to-moderate coupling, molecular binding is weakened by interatomic interactions, while in the strong coupling regime, the intermolecular correlations dominate and enhance the stability of molecular species. These findings reveal the dual role of neutral correlations in warm dense hydrogen and provide analytical insights relevant to both astrophysical applications and laboratory experiments.</p>","PeriodicalId":10700,"journal":{"name":"Contributions to Plasma Physics","volume":"66 7-8","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ctpp.70065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072486","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}