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<p>The University of Giessen has been developing miniature radio-frequency ion thrusters that can be used to fine-tune spacecraft positioning. The <i>PlasmaPIC</i> code was developed to study plasma processes inside the discharge chamber and to optimize thruster performance of RIT-1.0, the smallest of the series. This code was later updated to simulate a larger thruster known as RIT-2.5. The revised code is used to determine plasma properties, such as density and temperature, inside the RIT-2.5 chamber based on inputs like neutral gas flow, power, and operational frequency. These results obtained from the simulations were then compared with the experimental measurements that correlated plasma density and electron temperatures with extracted currents. In this paper, we present a modified numerical model along with a comparison of some measurements and simulations.</p>

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Three dimensional Particle-in-Cell simulation of a radio-frequency ion thruster (RIT-2.5)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月1日

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  • Ninad Joshi,
  • Christian Heiliger,
  • Oliver Meusel

摘要

The University of Giessen has been developing miniature radio-frequency ion thrusters that can be used to fine-tune spacecraft positioning. The PlasmaPIC code was developed to study plasma processes inside the discharge chamber and to optimize thruster performance of RIT-1.0, the smallest of the series. This code was later updated to simulate a larger thruster known as RIT-2.5. The revised code is used to determine plasma properties, such as density and temperature, inside the RIT-2.5 chamber based on inputs like neutral gas flow, power, and operational frequency. These results obtained from the simulations were then compared with the experimental measurements that correlated plasma density and electron temperatures with extracted currents. In this paper, we present a modified numerical model along with a comparison of some measurements and simulations.