基于多通道静电探针系统的GADX平台辉光放电研究
Glow Discharge Study on the GADX Platform Using a Multi-Channel Langmuir Probe System
摘要: 辉光与电弧放电实验平台主要用于研究射流驱动等离子体的等离子体预电离阶段以及后续整枪发射时的弧光放电过程。在磁惯性约束聚变同轴等离子体枪的预电离过程中引入辉光放电技术，能显著提高能量利用效率。为诊断该系统脉冲辉光放电期间不同区域的等离子参数信息。本研究使用了一套4通道静电三探针诊断系统用于诊断实验平台的阴极和阳极前端5 cm，且各自在环向位置上布设两组间隔180˚。通过这一套静电探针系统，我们对比了不同限流电阻、不同气压下的等离子体行为，并研究了低气压下等离子体电子密度与放电电压的演化关系。这对于研究同轴等离子体枪内预电离阶段等离子体的参数演化和动力学过程至关重要，为理解等离子体射流形成的物理过程提供了关键实验基础。
Abstract: The glow and arc discharge experimental platform is primarily dedicated to studying the pre-ionization stage and the subsequent arc discharge process in plasma-jet-driven magneto-inertial fusion (PJMIF). Introducing glow discharge technology into the pre-ionization stage of a coaxial plasma gun for magneto-inertial confinement fusion can significantly enhance the discharge efficiency. To diagnose the plasma parameters in different regions during the pulsed glow discharge of this system, a 4-channel electrostatic triple-probe diagnostic system is employed in this study. The probes are installed 5 cm in front of the cathode and the anode of the platform; at each of these locations, two probe assemblies are arranged in the azimuthal direction, separated by 180˚. Using this electrostatic probe system, we compared the plasma behavior under different current-limiting resistances and gas pressures, and studied the evolution of the plasma electron density with discharge voltage under low-pressure conditions. this work is crucial for investigating the parameter evolution and dynamic processes of the plasma during the pre-ionization stage inside the coaxial plasma gun, and it provides a key experimental basis for understanding the physical mechanisms underlying plasma jet formation.
文章引用：高浩文, 冯威, 郝春静, 武耀星, 赵永正. 基于多通道静电探针系统的GADX平台辉光放电研究[J]. 应用物理, 2026, 16(6): 657-665. https://doi.org/10.12677/app.2026.166060

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