Study on grid system performance of 10 cm ECRIT applied in ABEP

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-03-03 DOI:10.1016/j.vacuum.2025.114209

Hao Mou, Juan Yang, Yuxuan Wang, Lingfeng Luo, Xinqi Zhou

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引用次数: 0

Abstract

The 10 cm Electron Cyclotron Resonance Ion Thruster (ECRIT) has potential for application in the air-breathing electric propulsion (ABEP) system. Nitrogen is the main component of the orbital atmosphere, and the ion distribution in the discharge chamber of the ECRIT using nitrogen is non-uniform. Using the hybrid PIC-fluid method, this study simulates the transport of non-uniform nitrogen ions in the grid system. The ion density at the upstream boundary of the computational domain is set based on plasma density diagnostics, considering the non-uniform ion distribution. Comparison of simulation and experimental results shows consistency in both qualitative and quantitative aspects. The distribution of grid system performance parameters indicates that the intercepted current of the screen grid is proportional to upstream plasma density, while that of the accelerator grid is inversely proportional. Ion bombardment mainly causes erosion on the upstream and hole surfaces of the accelerator grid, while screen grid erosion is negligible. Reducing the screen grid aperture in high plasma density regions and increasing it in other regions helps improve beam flatness and reduces the erosion rate on both upstream and downstream surfaces of the accelerator grid.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.