2021/11/24 by I. Nagy, Nagy, I., I. Aldazábal +1
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Ion-surface interactions and analysis #Laser-induced spectroscopy and plasma #Plasma Physics (physics.plasm-ph) #Quantum Gases (cond-mat.quant-gas)
paper · pdf · doi:10.48550/arxiv.2111.12189
openalex publication_date 2021/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The nonperturbative kinetic framework for the stopping power of a charged-particle system for swift point projectiles is implemented. The pair-interaction potential energy required in this framework to two-body elastic scattering is based on the screened interaction energy between system particles. In such an energetically optimized modeling the swift bare projectile interacts with independent screened constituents of a fixed-density interacting many-body target. The first-order Born momentum-transfer (transport) cross section is calculated and thus a comparison with stopping data obtained [Phys. Rev. B \bf 26, 2335 (1982)] by swift ions, Z1∈[9,17] and (v/v0)≃11, under channeling condition in Si is made. A quantitative agreement between the elastic scattering-based theoretical stopping and the experimentally observed reduced magnitude is found. Conventionally, such a reduced magnitude for the observable is interpreted, applying an equipartition rule, as inelastic energy loss mediated by a collective classical plasma-mode without momentum transfer to the valence-part. Beyond the leading, i.e., first-order Born-Bethe term (Z12), the Barkas (Z13) and Bloch (Z14) terms are discussed, following the arguments of Lindhard for screened interaction. An extension to the case of stopping of warm dense plasma for swift charges is outlined as well.