重复频率脉冲流注放电演变现象与机制研究进展

重复频率脉冲流注放电是低温等离子体前沿应用的关键使能因子，然而，高重复频率脉冲作用下流注放电呈现复杂的不稳定和记忆效应现象，放电基础演变机理和调控方法尚不完善，极大影响应用的安全性和放电特性调控的有效性。综述了重复频率脉冲流注放电演变现象与机制的研究进展。首先归纳了重复频率脉冲流注放电的强非线性和渐进式演变特征，然后分析不同类型放电记忆效应因子对后续流注起始和传播的作用机制，最后总结了脉冲波形参数对重复频率脉冲流注放电的影响规律。凝练了重复频率脉冲流注放电演变机制研究的若干挑战，对脉冲放电等离子体机理研究具有一定的借鉴作用。

Research progress on evolution phenomena and mechanisms of repetitively pulsed streamer discharge

The repetitively pulsed streamer discharge is a critical enabling factor in many advanced low-temperature plasma applications. However, the streamer discharge exhibits complex instabilities and memory effect phenomena under high-frequency repetitive pulses. Fundamental discharge evolution mechanisms and regulation methods are not thoroughly understood, which significantly affects the application safety and regulation efficiency of discharge properties. In this paper, evolution phenomena and mechanisms of repetitively pulsed streamer discharge are reviewed, strong nonlinearity and progressive evolution features are summarized for repetitively pulsed streamer discharge, different memory effect agents and their influential mechanisms on initiation and propagation of subsequent streamers are discussed, effects of pulse waveform parameters on repetitively pulsed streamer discharge are outlined, and several research challenges are proposed regarding evolution mechanisms of repetitively pulsed streamer discharge, which would be helpful for revealing mechanisms of pulsed discharge plasmas.