Profile-driven proton and triton stopping in warm dense matter: a density-derived stripping potential and effective excitation closure
Plasma Physics and Controlled Fusion, cilt.68, sa.5, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 68 Sayı: 5
- Basım Tarihi: 2026
- Doi Numarası: 10.1088/1361-6587/ae6a66
- Dergi Adı: Plasma Physics and Controlled Fusion
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: charged-particle stopping power, density-profile closure, Li–Petrasso model, warm dense matter
- Hatay Mustafa Kemal Üniversitesi Adresli: Evet
Özet
Charged-particle stopping in warm dense matter (WDM) remains a key uncertainty in high-energy-density experiments and inertial confinement fusion (ICF) analysis, where state-dependent electronic structure, partial ionization, and degeneracy modify energy-loss mechanisms relative to cold-matter baselines. In this work, a profile-driven interface is formulated in which the electron-density profile (Formula presented) (Formula presented) is treated as the primary state descriptor and is mapped to stopping-model inputs through an energy-dependent stripping distance (Formula presented) (Formula presented) derived from a density-based potential. A common active domain (Formula presented) (Formula presented) is then used to define (i) an effective active-electron number (Formula presented) (Formula presented) by radial integration and (ii) an effective mean excitation energy (Formula presented) (Formula presented) via a plasma-frequency correlation, thereby enforcing internal consistency between charge participation and excitation scale. The closures (Formula presented) (Formula presented) are propagated through a transparent collisional kernel to obtain stopping powers (Formula presented) (Formula presented) and continuous slowing-down approximation ranges (Formula presented) (Formula presented) for protons and tritons over 0.05–10 MeV in representative CH and C WDM states. Model-to-baseline ratios relative to Li–Petrasso stopping are reported to connect the results to widely used ICF reference practices, and closure-parameter sensitivity is quantified through uncertainty envelopes that bound (Formula presented) (Formula presented) and (Formula presented) (Formula presented). Across the studied states, the derived (Formula presented) (Formula presented) trends produce coupled variations in (Formula presented) (Formula presented) and (Formula presented) (Formula presented) that yield systematic, energy-dependent departures from the Li–Petrasso baseline, with implications for DT-relevant triton transport and for the interpretation of WDM stopping benchmarks. All figure-ready datasets are provided to facilitate cross-comparison with alternative stopping prescriptions and to support future validation against dedicated WDM experiments.