Speaker
Description
Microwave heating efficiency is a pivotal factor in improving electron cyclotron resonance ion source (ECRIS) performance. Recently, Vlasov launchers have been applied in third-generation ECRISs and have yielded significant performance enhancements; however, the underlying physical mechanisms remain to be fully understood. In this study, we developed a plasma dynamics simulation model to investigate the mechanism of this high-efficiency microwave heating. The results show that microwave power absorption in the front axial region strongly affects the plasma density distribution, particularly the spatial distribution of warm electrons. By reshaping this power absorption profile, the Vlasov launcher increases the warm-electron density, deepening the plasma potential and thereby enhancing both ion confinement and the ionization rate, which ultimately improves the overall performance of the ion source.
| Classification | MC3: Fundamental processes and plasma studies |
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