Effect of Magnetic Field Strength on the Performance off the ALFVEN Thruster

Kurzfassung

This work investigates the performance limitations of an electroless plasma thruster (EPT) based on the Advanced-Linear Field Vector Excitation Network (ALFVEN) concept, which aims to enhance wave–plasma coupling through an optimized power coupling, enabling efficient plasma generation. Experimental results demonstrate strong ignition capability, high plasma density, and effective ion beam acceleration, when combined with a divergent magnetic nozzle (DMN). Despite these promising features, overall thruster performance remains limited. Through detailed analysis, beam current, and operating conditions, this study identifies wall losses as a primary factor constraining efficiency. The work further evaluates the influence of magnetic field strength on performance, providing insights into loss mechanisms and pathways for improving EPT efficiency