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Open Quantum Systems Decoherence
Quantum Simulation
Quantum Chemistry
Quantum Kinetics of Fast-Electron Inelastic Collisions in Partially-Ionized Plasmas
arXiv
Authors: Yeongsun Lee, Pavel Aleynikov, Jong-Kyu Park
Year
2026
Paper ID
30563
Status
Preprint
Abstract Read
~2 min
Abstract Words
88
Citations
N/A
Abstract
Fast electrons in partially ionized plasmas lose energy through inelastic collisions with bound electrons. While the mean energy loss is well described by stopping-power theory, fluctuations associated with discrete excitation and ionization events produce energy straggling and an additional longitudinal diffusion in momentum space. We incorporate this effect into fast-electron kinetics through a derived Fokker-Planck operator whose coefficients are obtained from ab initio quantum many-body simulations. We demonstrate that neglecting inelastic energy diffusion in partially ionized D-Ar plasmas can underestimate primary runaway-electron generation by several orders of magnitude.
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- This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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- Fast electrons in partially ionized plasmas lose energy through inelastic collisions with bound electrons.
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