2009/01/31 by Franz X. Bronold, F. X. Bronold, H. Deutsch +2 · 1 citation
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #Dust and Plasma Wave Phenomena #Plasma Diagnostics and Applications #physics.plasm-ph #physics.space-ph
paper · pdf · doi:10.1140/epjd/e2009-00213-7
published as Eur. Phys. J. D 54, 519-544 (2009) · accepted version, 30 pages, 14 figures
arxiv created 2009/07/16 · openalex publication_date 2009/07/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Plasma-boundaries floating in an ionized gas are usually negatively charged. They accumulate electrons more efficiently than ions which leads to the formation of a quasi-stationary electron film at the boundaries. We propose, in a colloquial manner, a physisorption-inspired quantum-kinetic description of the build-up of surface charges at inert plasma boundaries and calculate the electron sticking coefficient and the electron desorption time, which play an important role in determining the quasi-stationary surface charge, and about which little is empirically and theoretically known, from a microscopic model for the electron-wall interaction. In an exploratory calculation we specifically consider a metallic boundary. But thereby we identify quite generally what we believe are the key issues of the electronic microphysics at inert plasma boundaries in the hope to inspire other groups to join us on our journey.