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微波霍尔推力器是双极霍尔推力器的一种形式,其电离源中的圆柱谐振腔是一个关键件,它承担着微波能量的传输并激发表面波等离子体的重要作用。正确选择其结构和谐振模态是构建微波霍尔推力器的重要基础。为此,针对不同结构、不同谐振模态的微波谐振腔进行结构参数计算分析和电磁场分布规律数值模拟,从中选取可以和霍尔推力器SPT70加速通道相匹配的腔体结构。计算分析和数值模拟结果表明2.45GHz谐振于TM011模的圆柱谐振腔和SPT70加速通道有合适的匹配关系。
Microwave Hall Thruster is a form of bipolar Hall thruster, the ionization source of the cylindrical cavity is a key component, it is responsible for the transmission of microwave energy and stimulate the important role of surface wave plasma. The correct choice of the structure and resonant mode is to build an important foundation for microwave Hall thruster. Therefore, the structure parameters and electromagnetic field distribution of microwave resonators with different structures and resonant modes are numerically simulated, and the cavity structure that can match with Hall thruster SPT70 acceleration channel is selected. The results of numerical analysis and numerical simulation show that there is a matching relationship between the 2.45GHz resonant cavity of the TM011 mode and the SPT70 acceleration channel.