等离子体边界电子物理吸附动力学
Physisorption kinetics of electrons at plasma boundaries
摘要：
漂浮在电离气体中的等离子体边界通常带负电。它们比离子更有效地积累电子，这导致在边界处形成准静态电子膜。我们提出，在一个口语化的方式，物理吸附启发的量子动力学描述的惰性等离子体边界处的表面电荷的积累和计算的电子粘附系数和电子解吸时间，这起着重要的作用，在确定准静态的表面电荷，而其中很少是经验和理论上已知的，从微观模型的电子壁相互作用。在探索性计算中，我们特别考虑金属边界。但是，由此我们相当普遍地确定了我们认为是惰性等离子体边界的电子微观物理学的关键问题，希望能激励其他小组加入我们的旅程。
英文摘要：
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.
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