Romero José, Limão-Vieira Paulo, Probst Michael
Institute of Ion Physics and Applied Physics, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.
Atomic and Molecular Collisions Laboratory, CEFITEC, Department of Physics, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
J Phys Condens Matter. 2022 Jul 12;34(37). doi: 10.1088/1361-648X/ac7d86.
We present the electron-impact ionization cross sections (EICSs) of iron and chromium hydrides, nitrides, and oxides. The motivation of this work stems from the fact that chemical sputtering from a steel surface exposed to a hot plasma can create these molecules which in turn influence the composition and energy balance of the plasma. The latter influence is quantified by the EICS which we derive by using two semi-empirical methods which can be employed in the relevant energy range of 10-1000 eV. They are important molecular properties for plasma- and materials science. We discuss the foundations of the methods and present the cross sections of the high- and low-spin states of the species in their neutral ground states and of their cations.
我们给出了铁和铬的氢化物、氮化物及氧化物的电子碰撞电离截面（EICS）。这项工作的动机源于这样一个事实：暴露于热等离子体的钢表面发生的化学溅射会产生这些分子，而这些分子反过来又会影响等离子体的成分和能量平衡。后一种影响可通过我们使用两种半经验方法推导得出的EICS进行量化，这两种方法可用于10 - 1000 eV的相关能量范围。它们是等离子体和材料科学中重要的分子特性。我们讨论了这些方法的基础，并给出了处于中性基态及其阳离子的高自旋态和低自旋态物种的截面。
