DEVICE FOR REDUCING THE IMPACT OF POSITIVELY CHARGED IONS ON A SURFACE SECTION AND ION ACCELERATOR ARRANGEMENT

摘要

The invention relates to a surface section that is exposed to an ion flow, in particular for a drive arrangement in a spacecraft, comprising an electrostatic ion accelerator arrangement. According to the invention, in order to reduce erosion, an intermediate potential energy surface is provided, said surface being advantageous in that it allows a magnetic field that is essentially parallel to the surface section to be formed.