米级实验室排放中试系统的开发
Pilot system development in metre-scale laboratory discharge
摘要：
利用ns快速摄影技术研究了米级负实验室放电中试系统的研制。系统在负高压电极附近表现为双极结构。它们是单个负流注传播的结果，并决定了放电的进一步发展。这样的系统具有发光的珠子，双极性，顶部和底部不同的亮度，以及相互重连等特征。提出了火花隙中电离演化的一维模型。在电离增长的非线性发展过程中，模型表现出与观测结果相似的特征。高空精灵和实验室飞行员之间的视觉相似性是惊人的，这可能表明他们是同一自然现象的两种表现形式。
英文摘要：
The pilot system development in metre-scale negative laboratory discharges is studied with ns-fast photography. The systems appear as bipolar structures in the vicinity of the negative high-voltage electrode. They appear as a result of a single negative streamer propagation and determine further discharge development. Such systems possess features like glowing beads, bipolarity, different brightness of the top and bottom parts, and mutual reconnection. A 1D model of the ionization evolution in the spark gap is proposed. In the process of the nonlinear development of ionization growth, the model shows features similar to those observed. The visual similarities between high-altitude sprites and laboratory pilots are striking and may indicate that they are two manifestations of the same natural phenomenon.
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